From 9f2fcb8cd7d363c325402865417feff78ec6a7cc Mon Sep 17 00:00:00 2001
From: Sam Zhou <samzhou19815@meta.com>
Date: Fri, 28 Feb 2025 15:48:08 -0800
Subject: [PATCH] [flow] Remove bom, cssom, dom, stream from bundled libdefs

Summary:
Changelog: [lib] Since the last version, most of the bundled libdefs will no longer be maintained and shipped with Flow. Going forward, they should be downloaded from flow-typed. Starting from this version, we will also no longer ship a set of precise typing definition for jsx intrinsics. To maintain the same behavior as before, you should have a `flow-typed.config.json` in the root of your project with the following content:
```
{
  "env": ["node", "dom", "bom", "intl", "cssom", "indexeddb", "serviceworkers", "webassembly", "jsx"]
}
```

Reviewed By: jbrown215

Differential Revision: D70409195

fbshipit-source-id: 483f214a71d11f3f98cf2e077fe4a88f49e2c5d6
---
 lib/bom.js                                    |  575 ---
 lib/cssom.js                                  |  555 --
 lib/dom.js                                    | 4471 -----------------
 lib/streams.js                                |  127 -
 newtests/lsp/queries/test.js                  |    2 +-
 tests/arrows/arrows.js                        |    4 +
 .../autocomplete_from_m_to_q.exp              |  244 +-
 tests/component_syntax/component_syntax.exp   |    9 +-
 tests/component_syntax/refs.js                |    2 +-
 tests/declare_namespace/declare_namespace.exp |   54 +-
 .../type_only_react_namespace.js              |    4 +-
 tests/global_this/global_this.exp             |   30 +-
 tests/global_this/test.js                     |    2 +-
 tests/new_merge_diff/new_merge_diff.exp       |    7 +-
 tests/quick_start/quick_start.exp             |    8 +-
 .../quick_start_add_dependency.exp            |    4 +-
 .../quick_start_add_dependency_on_cycle.exp   |    4 +-
 .../quick_start_check_contents.exp            |    4 +-
 .../quick_start_delete_dependency.exp         |    6 +-
 .../quick_start_unchecked_dependency.exp      |    8 +-
 tests/react_ref_as_prop/react_ref_as_prop.exp |  189 +-
 tests/react_rules/ref_read_different_type.js  |    2 +-
 tests/union/union.js                          |    2 +
 23 files changed, 162 insertions(+), 6151 deletions(-)
 delete mode 100644 lib/bom.js
 delete mode 100644 lib/cssom.js
 delete mode 100644 lib/dom.js
 delete mode 100644 lib/streams.js

diff --git a/lib/bom.js b/lib/bom.js
deleted file mode 100644
index b8a51d9c2c1..00000000000
--- a/lib/bom.js
+++ /dev/null
@@ -1,575 +0,0 @@
-/**
- * Copyright (c) Meta Platforms, Inc. and affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- *
- * @flow
- */
-
-/* BOM */
-
-
-type PermissionState =
-  | "granted"
-  | "denied"
-  | "prompt";
-
-type FileSystemHandlePermissionDescriptor = {|
-  mode: "read" | "readwrite";
-|}
-
-declare class PermissionStatus extends EventTarget {
-  onchange: ?((event: any) => mixed);
-  +state: PermissionState;
-}
-
-// https://www.w3.org/TR/hr-time-2/#dom-domhighrestimestamp
-// https://developer.mozilla.org/en-US/docs/Web/API/DOMHighResTimeStamp
-declare type DOMHighResTimeStamp = number;
-
-declare class Location {
-    ancestorOrigins: string[];
-    hash: string;
-    host: string;
-    hostname: string;
-    href: string;
-    origin: string;
-    pathname: string;
-    port: string;
-    protocol: string;
-    search: string;
-    assign(url: string): void;
-    reload(flag?: boolean): void;
-    replace(url: string): void;
-    toString(): string;
-}
-
-///////////////////////////////////////////////////////////////////////////////
-
-type FormDataEntryValue = string | File
-
-declare class FormData {
-    constructor(form?: HTMLFormElement, submitter?: HTMLElement | null): void;
-
-    has(name: string): boolean;
-    get(name: string): ?FormDataEntryValue;
-    getAll(name: string): Array<FormDataEntryValue>;
-
-    set(name: string, value: string): void;
-    set(name: string, value: Blob, filename?: string): void;
-    set(name: string, value: File, filename?: string): void;
-
-    append(name: string, value: string): void;
-    append(name: string, value: Blob, filename?: string): void;
-    append(name: string, value: File, filename?: string): void;
-
-    delete(name: string): void;
-
-    keys(): Iterator<string>;
-    values(): Iterator<FormDataEntryValue>;
-    entries(): Iterator<[string, FormDataEntryValue]>;
-}
-
-declare class DOMRectReadOnly {
-  static fromRect(rectangle?: {
-    x: number,
-    y: number,
-    width: number,
-    height: number,
-    ...
-  }): DOMRectReadOnly;
-  constructor(x: number, y: number, width: number, height: number): void;
-  +bottom: number;
-  +height: number;
-  +left: number;
-  +right: number;
-  +top: number;
-  +width: number;
-  +x: number;
-  +y: number;
-}
-
-declare class DOMRect extends DOMRectReadOnly {
-  static fromRect(rectangle?: {
-    x: number,
-    y: number,
-    width: number,
-    height: number,
-    ...
-  }): DOMRect;
-  bottom: number;
-  height: number;
-  left: number;
-  right: number;
-  top: number;
-  width: number;
-  x: number;
-  y: number;
-}
-
-declare class DOMRectList {
-  @@iterator(): Iterator<DOMRect>;
-  length: number;
-  item(index: number): DOMRect;
-  [index: number]: DOMRect;
-}
-
-type AudioContextState = 'suspended' | 'running' | 'closed';
-
-declare class CanvasCaptureMediaStream extends MediaStream {
-  canvas: HTMLCanvasElement;
-  requestFrame(): void;
-}
-
-type DoubleRange = {
-  max?: number;
-  min?: number;
-  ...
-}
-
-type LongRange = {
-  max?: number;
-  min?: number;
-  ...
-}
-
-type ConstrainBooleanParameters = {
-  exact?: boolean;
-  ideal?: boolean;
-  ...
-}
-
-type ConstrainDOMStringParameters = {
-  exact?: string | string[];
-  ideal?: string | string[];
-  ...
-}
-
-type ConstrainDoubleRange = {
-  ...DoubleRange;
-  exact?: number;
-  ideal?: number;
-  ...
-}
-
-type ConstrainLongRange = {
-  ...LongRange;
-  exact?: number;
-  ideal?: number;
-  ...
-}
-
-type MediaTrackConstraintSet = {
-  width?: number | ConstrainLongRange;
-  height?: number | ConstrainLongRange;
-  aspectRatio?: number | ConstrainDoubleRange;
-  frameRate?: number | ConstrainDoubleRange;
-  facingMode?: string | string[] | ConstrainDOMStringParameters;
-  resizeMode?: string | string[] | ConstrainDOMStringParameters;
-  volume?: number | ConstrainDoubleRange;
-  sampleRate?: number | ConstrainLongRange;
-  sampleSize?: number | ConstrainLongRange;
-  echoCancellation?: boolean | ConstrainBooleanParameters;
-  autoGainControl?: boolean | ConstrainBooleanParameters;
-  noiseSuppression?: boolean | ConstrainBooleanParameters;
-  latency?: number | ConstrainDoubleRange;
-  channelCount?: number | ConstrainLongRange;
-  deviceId?: string | string[] | ConstrainDOMStringParameters;
-  groupId?: string | string[] | ConstrainDOMStringParameters;
-  ...
-}
-
-type MediaTrackConstraints = {
-  ...MediaTrackConstraintSet;
-  advanced?: Array<MediaTrackConstraintSet>;
-  ...
-}
-
-type MediaStreamConstraints = {
-  audio?: boolean | MediaTrackConstraints;
-  video?: boolean | MediaTrackConstraints;
-  peerIdentity?: string;
-  ...
-}
-
-type MediaTrackSettings = {
-  aspectRatio?: number;
-  deviceId?: string;
-  displaySurface?: 'application' | 'browser' | 'monitor' | 'window';
-  echoCancellation?: boolean;
-  facingMode?: string;
-  frameRate?: number;
-  groupId?: string;
-  height?: number;
-  logicalSurface?: boolean;
-  sampleRate?: number;
-  sampleSize?: number;
-  volume?: number;
-  width?: number;
-  ...
-}
-
-type MediaTrackCapabilities = {
-  aspectRatio?: number | DoubleRange;
-  deviceId?: string;
-  echoCancellation?: boolean[];
-  facingMode?: string;
-  frameRate?: number | DoubleRange;
-  groupId?: string;
-  height?: number | LongRange;
-  sampleRate?: number | LongRange;
-  sampleSize?: number | LongRange;
-  volume?: number | DoubleRange;
-  width?: number | LongRange;
-  ...
-}
-
-declare class MediaStream extends EventTarget {
-  active: boolean;
-  ended: boolean;
-  id: string;
-  onactive: (ev: any) => mixed;
-  oninactive: (ev: any) => mixed;
-  onended: (ev: any) => mixed;
-  onaddtrack: (ev: MediaStreamTrackEvent) => mixed;
-  onremovetrack: (ev: MediaStreamTrackEvent) => mixed;
-  addTrack(track: MediaStreamTrack): void;
-  clone(): MediaStream;
-  getAudioTracks(): MediaStreamTrack[];
-  getTrackById(trackid?: string): ?MediaStreamTrack;
-  getTracks(): MediaStreamTrack[];
-  getVideoTracks(): MediaStreamTrack[];
-  removeTrack(track: MediaStreamTrack): void;
-}
-
-declare class MediaStreamTrack extends EventTarget {
-  enabled: boolean;
-  id: string;
-  kind: string;
-  label: string;
-  muted: boolean;
-  readonly: boolean;
-  readyState: 'live' | 'ended';
-  remote: boolean;
-  contentHint?: string;
-  onstarted: (ev: any) => mixed;
-  onmute: (ev: any) => mixed;
-  onunmute: (ev: any) => mixed;
-  onoverconstrained: (ev: any) => mixed;
-  onended: (ev: any) => mixed;
-  getConstraints(): MediaTrackConstraints;
-  applyConstraints(constraints?: MediaTrackConstraints): Promise<void>;
-  getSettings(): MediaTrackSettings;
-  getCapabilities(): MediaTrackCapabilities;
-  clone(): MediaStreamTrack;
-  stop(): void;
-}
-
-declare class MediaStreamTrackEvent extends Event {
-  track: MediaStreamTrack;
-}
-
-declare class URLSearchParams {
-    @@iterator(): Iterator<[string, string]>;
-
-    size: number;
-
-    constructor(init?: string | URLSearchParams | Array<[string, string]> | { [string]: string, ... } ): void;
-    append(name: string, value: string): void;
-    delete(name: string, value?: string): void;
-    entries(): Iterator<[string, string]>;
-    forEach<This>(callback: (this : This, value: string, name: string, params: URLSearchParams) => mixed, thisArg: This): void;
-    get(name: string): null | string;
-    getAll(name: string): Array<string>;
-    has(name: string, value?: string): boolean;
-    keys(): Iterator<string>;
-    set(name: string, value: string): void;
-    sort(): void;
-    values(): Iterator<string>;
-    toString(): string;
-}
-
-declare class AbortSignal extends EventTarget {
-    +aborted: boolean;
-    +reason: any;
-    abort(reason?: any): AbortSignal;
-    onabort: (event: Event) => mixed;
-    throwIfAborted(): void;
-    timeout(time: number): AbortSignal;
-}
-
-declare class MediaQueryListEvent {
-  matches: boolean;
-  media: string;
-}
-
-declare type MediaQueryListListener = MediaQueryListEvent => void;
-
-/* Trusted Types
- * https://w3c.github.io/trusted-types/dist/spec/#trusted-types
- */
-declare class TrustedHTML {
-  toString(): string;
-  toJSON(): string;
-}
-
-declare class TrustedScript {
-  toString(): string;
-  toJSON(): string;
-}
-
-declare class TrustedScriptURL {
-  toString(): string;
-  toJSON(): string;
-}
-
-// https://wicg.github.io/webusb/
-// https://developer.mozilla.org/en-US/docs/Web/API/USBDevice
-declare class USBDevice {
-  configuration: USBConfiguration;
-  configurations: Array<USBConfiguration>;
-  deviceClass: number;
-  deviceProtocol: number;
-  deviceSubclass: number;
-  deviceVersionMajor: number;
-  deviceVersionMinor: number;
-  deviceVersionSubminor: number;
-  manufacturerName: ?string;
-  opened: boolean;
-  productId: number;
-  productName: ?string;
-  serialNumber: ?string;
-  usbVersionMajor: number;
-  usbVersionMinor: number;
-  usbVersionSubminor: number;
-  vendorId: number;
-  claimInterface(interfaceNumber: number): Promise<void>;
-  clearHalt(direction: 'in' | 'out', endpointNumber: number): Promise<void>;
-  close(): Promise<void>;
-  controlTransferIn(setup: SetUpOptions, length: number): Promise<USBInTransferResult>;
-  controlTransferOut(setup: SetUpOptions, data: ArrayBuffer): Promise<USBOutTransferResult>;
-  forget(): Promise<void>;
-  isochronousTransferIn(endpointNumber: number, packetLengths: Array<number>): Promise<USBIsochronousInTransferResult>;
-  isochronousTransferOut(endpointNumber: number, data: ArrayBuffer, packetLengths: Array<number>): Promise<USBIsochronousOutTransferResult>;
-  open(): Promise<void>;
-  releaseInterface(interfaceNumber: number): Promise<void>;
-  reset(): Promise<void>;
-  selectAlternateInterface(interfaceNumber: number, alternateSetting: number): Promise<void>;
-  selectConfiguration(configurationValue: number): Promise<void>;
-  transferIn(endpointNumber: number, length: number): Promise<USBInTransferResult>;
-  transferOut(endpointNumber: number, data: ArrayBuffer): Promise<USBOutTransferResult>;
-}
-
-declare type USBDeviceFilter = {|
-  vendorId?: number;
-  productId?: number;
-  classCode?: number;
-  subclassCode?: number;
-  protocolCode?: number;
-  serialNumber?: string;
-|};
-
-declare type USBDeviceRequestOptions = {|
-  filters: Array<USBDeviceFilter>;
-  exclusionFilters?: Array<USBDeviceFilter>;
-|}
-
-declare class USBConfiguration {
-  constructor(): void;
-  configurationName: ?string;
-  configurationValue: number;
-  interfaces: $ReadOnlyArray<USBInterface>;
-
-}
-
-declare class USBInterface {
-  constructor(): void;
-  interfaceNumber: number;
-  alternate: USBAlternateInterface;
-  alternates: Array<USBAlternateInterface>;
-  claimed: boolean;
-}
-
-declare class USBAlternateInterface {
-  constructor(): void;
-  alternateSetting: number;
-  interfaceClass: number;
-  interfaceSubclass: number;
-  interfaceProtocol: number;
-  interfaceName: ?string;
-  endpoints : Array<USBEndpoint>;
-}
-
-declare class USBEndpoint {
-  constructor(): void;
-  endpointNumber: number;
-  direction: 'in' | 'out';
-  type:'bulk' | 'interrupt' | 'isochronous';
-  packetSize: number;
-}
-
-declare class USBOutTransferResult {
-  constructor(): void;
-  bytesWritten: number;
-  status: 'ok' | 'stall';
-}
-
-declare class USBInTransferResult {
-  constructor(): void;
-  data: DataView;
-  status: 'ok' |'stall' | 'babble';
-}
-
-declare class USBIsochronousInTransferResult {
-  constructor(): void;
-  data: DataView;
-  packets: Array<USBIsochronousInTransferPacket>;
-}
-
-declare class USBIsochronousInTransferPacket {
-  constructor(): void;
-  data: DataView;
-  status: 'ok' |'stall' | 'babble';
-}
-
-declare class USBIsochronousOutTransferResult {
-  constructor(): void;
-  packets: Array<USBIsochronousOutTransferPacket>
-}
-
-declare class USBIsochronousOutTransferPacket {
-  constructor(): void;
-  bytesWritten: number;
-  status: 'ok' | 'stall';
-}
-
-type SetUpOptions = {
-  requestType: string;
-  recipient: string;
-  request: number;
-  value: number;
-  index: number;
-  ...
-}
-
-declare type FileSystemHandleKind = "file" | "directory";
-
-// https://wicg.github.io/file-system-access/#api-filesystemhandle
-declare class FileSystemHandle {
-  +kind: FileSystemHandleKind;
-  +name: string;
-
-  isSameEntry: (other: FileSystemHandle) => Promise<boolean>;
-  queryPermission?: (
-    descriptor: FileSystemHandlePermissionDescriptor
-  ) => Promise<PermissionStatus>;
-  requestPermission?: (
-    descriptor: FileSystemHandlePermissionDescriptor
-  ) => Promise<PermissionStatus>;
-}
-
-// https://fs.spec.whatwg.org/#api-filesystemfilehandle
-declare class FileSystemFileHandle extends FileSystemHandle {
-  +kind: "file";
-
-  constructor(name: string): void;
-
-  getFile(): Promise<File>;
-  createSyncAccessHandle(): Promise<FileSystemSyncAccessHandle>;
-  createWritable(options?: {|
-    keepExistingData?: boolean,
-  |}): Promise<FileSystemWritableFileStream>;
-}
-
-// https://fs.spec.whatwg.org/#api-filesystemdirectoryhandle
-declare class FileSystemDirectoryHandle extends FileSystemHandle {
-  +kind: "directory";
-
-  constructor(name: string): void;
-
-  getDirectoryHandle(
-    name: string,
-    options?: {| create?: boolean |}
-  ): Promise<FileSystemDirectoryHandle>;
-  getFileHandle(
-    name: string,
-    options?: {| create?: boolean |}
-  ): Promise<FileSystemFileHandle>;
-  removeEntry(name: string, options?: {| recursive?: boolean |}): Promise<void>;
-  resolve(possibleDescendant: FileSystemHandle): Promise<Array<string> | null>;
-
-  // Async iterator functions
-  @@asyncIterator(): AsyncIterator<[string, FileSystemHandle]>;
-  entries(): AsyncIterator<[string, FileSystemHandle]>;
-  keys(): AsyncIterator<string>;
-  values(): AsyncIterator<FileSystemHandle>;
-}
-
-// https://fs.spec.whatwg.org/#api-filesystemsyncaccesshandle
-declare class FileSystemSyncAccessHandle {
-  close(): void;
-  flush(): void;
-  getSize(): number;
-  read(buffer: ArrayBuffer, options?: {| at: number |}): number;
-  truncate(newSize: number): void;
-  write(buffer: ArrayBuffer, options?: {| at: number |}): number;
-}
-
-// https://streams.spec.whatwg.org/#default-writer-class
-declare class WritableStreamDefaultWriter {
-  +closed: Promise<void>;
-  +desiredSize: number;
-  +ready: Promise<void>;
-
-  constructor(): void;
-
-  abort(reason?: string): Promise<void>;
-  close(): Promise<void>;
-  releaseLock(): void;
-  write(chunk: any): Promise<void>;
-}
-
-// https://streams.spec.whatwg.org/#ws-class
-declare class WriteableStream {
-  +locked: boolean;
-
-  constructor(): void;
-
-  abort(reason: string): Promise<string>;
-  close(): Promise<void>;
-  getWriter(): WritableStreamDefaultWriter;
-}
-
-// https://fs.spec.whatwg.org/#dictdef-writeparams
-declare type FileSystemWriteableFileStreamDataTypes =
-  | ArrayBuffer
-  | $TypedArray
-  | DataView
-  | Blob
-  | string;
-
-// https://fs.spec.whatwg.org/#dictdef-writeparams
-declare type FileSystemWriteableFileStreamData =
-  | FileSystemWriteableFileStreamDataTypes
-  | {|
-      type: "write",
-      position?: number,
-      data: FileSystemWriteableFileStreamDataTypes,
-    |}
-  | {|
-      type: "seek",
-      position: number,
-      data: FileSystemWriteableFileStreamDataTypes,
-    |}
-  | {|
-      type: "size",
-      size: number,
-    |};
-
-// https://fs.spec.whatwg.org/#api-filesystemwritablefilestream
-declare class FileSystemWritableFileStream extends WriteableStream {
-  write(data: FileSystemWriteableFileStreamData): Promise<void>;
-  truncate(size: number): Promise<void>;
-  seek(position: number): Promise<void>;
-}
diff --git a/lib/cssom.js b/lib/cssom.js
deleted file mode 100644
index 4ec1641ecfb..00000000000
--- a/lib/cssom.js
+++ /dev/null
@@ -1,555 +0,0 @@
-/**
- * Copyright (c) Meta Platforms, Inc. and affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- *
- * @flow
- */
-
-declare class StyleSheet {
-  disabled: boolean;
-  +href: string;
-  +media: MediaList;
-  +ownerNode: Node;
-  +parentStyleSheet: ?StyleSheet;
-  +title: string;
-  +type: string;
-}
-
-declare class StyleSheetList {
-  @@iterator(): Iterator<StyleSheet>;
-  length: number;
-  [index: number]: StyleSheet;
-}
-
-declare class MediaList {
-  @@iterator(): Iterator<string>;
-  mediaText: string;
-  length: number;
-  item(index: number): ?string;
-  deleteMedium(oldMedium: string): void;
-  appendMedium(newMedium: string): void;
-  [index: number]: string;
-}
-
-declare class CSSStyleSheet extends StyleSheet {
-  +cssRules: CSSRuleList;
-  +ownerRule: ?CSSRule;
-  deleteRule(index: number): void;
-  insertRule(rule: string, index: number): number;
-  replace(text: string): Promise<CSSStyleSheet>;
-  replaceSync(text: string): void;
-}
-
-declare class CSSRule {
-  cssText: string;
-  +parentRule: ?CSSRule;
-  +parentStyleSheet: ?CSSStyleSheet;
-  +type: number;
-  static STYLE_RULE: number;
-  static MEDIA_RULE: number;
-  static FONT_FACE_RULE: number;
-  static PAGE_RULE: number;
-  static IMPORT_RULE: number;
-  static CHARSET_RULE: number;
-  static UNKNOWN_RULE: number;
-  static KEYFRAMES_RULE: number;
-  static KEYFRAME_RULE: number;
-  static NAMESPACE_RULE: number;
-  static COUNTER_STYLE_RULE: number;
-  static SUPPORTS_RULE: number;
-  static DOCUMENT_RULE: number;
-  static FONT_FEATURE_VALUES_RULE: number;
-  static VIEWPORT_RULE: number;
-  static REGION_STYLE_RULE: number;
-}
-
-declare class CSSKeyframeRule extends CSSRule {
-  keyText: string;
-  +style: CSSStyleDeclaration;
-}
-
-declare class CSSKeyframesRule extends CSSRule {
-  name: string;
-  +cssRules: CSSRuleList;
-  appendRule(rule: string): void;
-  deleteRule(select: string): void;
-  findRule(select: string): CSSKeyframeRule | null;
-}
-
-declare class CSSRuleList {
-  @@iterator(): Iterator<CSSRule>;
-  length: number;
-  item(index: number): ?CSSRule;
-  [index: number]: CSSRule;
-}
-
-declare class CSSStyleDeclaration {
-  @@iterator(): Iterator<string>;
-  /* DOM CSS Properties */
-  alignContent: string;
-  alignItems: string;
-  alignSelf: string;
-  all: string;
-  animation: string;
-  animationDelay: string;
-  animationDirection: string;
-  animationDuration: string;
-  animationFillMode: string;
-  animationIterationCount: string;
-  animationName: string;
-  animationPlayState: string;
-  animationTimingFunction: string;
-  backdropFilter: string;
-  webkitBackdropFilter: string;
-  backfaceVisibility: string;
-  background: string;
-  backgroundAttachment: string;
-  backgroundBlendMode: string;
-  backgroundClip: string;
-  backgroundColor: string;
-  backgroundImage: string;
-  backgroundOrigin: string;
-  backgroundPosition: string;
-  backgroundPositionX: string;
-  backgroundPositionY: string;
-  backgroundRepeat: string;
-  backgroundSize: string;
-  blockSize: string;
-  border: string;
-  borderBlockEnd: string;
-  borderBlockEndColor: string;
-  borderBlockEndStyle: string;
-  borderBlockEndWidth: string;
-  borderBlockStart: string;
-  borderBlockStartColor: string;
-  borderBlockStartStyle: string;
-  borderBlockStartWidth: string;
-  borderBottom: string;
-  borderBottomColor: string;
-  borderBottomLeftRadius: string;
-  borderBottomRightRadius: string;
-  borderBottomStyle: string;
-  borderBottomWidth: string;
-  borderCollapse: string;
-  borderColor: string;
-  borderImage: string;
-  borderImageOutset: string;
-  borderImageRepeat: string;
-  borderImageSlice: string;
-  borderImageSource: string;
-  borderImageWidth: string;
-  borderInlineEnd: string;
-  borderInlineEndColor: string;
-  borderInlineEndStyle: string;
-  borderInlineEndWidth: string;
-  borderInlineStart: string;
-  borderInlineStartColor: string;
-  borderInlineStartStyle: string;
-  borderInlineStartWidth: string;
-  borderLeft: string;
-  borderLeftColor: string;
-  borderLeftStyle: string;
-  borderLeftWidth: string;
-  borderRadius: string;
-  borderRight: string;
-  borderRightColor: string;
-  borderRightStyle: string;
-  borderRightWidth: string;
-  borderSpacing: string;
-  borderStyle: string;
-  borderTop: string;
-  borderTopColor: string;
-  borderTopLeftRadius: string;
-  borderTopRightRadius: string;
-  borderTopStyle: string;
-  borderTopWidth: string;
-  borderWidth: string;
-  bottom: string;
-  boxDecorationBreak: string;
-  boxShadow: string;
-  boxSizing: string;
-  breakAfter: string;
-  breakBefore: string;
-  breakInside: string;
-  captionSide: string;
-  clear: string;
-  clip: string;
-  clipPath: string;
-  color: string;
-  columns: string;
-  columnCount: string;
-  columnFill: string;
-  columnGap: string;
-  columnRule: string;
-  columnRuleColor: string;
-  columnRuleStyle: string;
-  columnRuleWidth: string;
-  columnSpan: string;
-  columnWidth: string;
-  contain: string;
-  content: string;
-  counterIncrement: string;
-  counterReset: string;
-  cursor: string;
-  direction: string;
-  display: string;
-  emptyCells: string;
-  filter: string;
-  flex: string;
-  flexBasis: string;
-  flexDirection: string;
-  flexFlow: string;
-  flexGrow: string;
-  flexShrink: string;
-  flexWrap: string;
-  float: string;
-  font: string;
-  fontFamily: string;
-  fontFeatureSettings: string;
-  fontKerning: string;
-  fontLanguageOverride: string;
-  fontSize: string;
-  fontSizeAdjust: string;
-  fontStretch: string;
-  fontStyle: string;
-  fontSynthesis: string;
-  fontVariant: string;
-  fontVariantAlternates: string;
-  fontVariantCaps: string;
-  fontVariantEastAsian: string;
-  fontVariantLigatures: string;
-  fontVariantNumeric: string;
-  fontVariantPosition: string;
-  fontWeight: string;
-  grad: string;
-  grid: string;
-  gridArea: string;
-  gridAutoColumns: string;
-  gridAutoFlow: string;
-  gridAutoPosition: string;
-  gridAutoRows: string;
-  gridColumn: string;
-  gridColumnStart: string;
-  gridColumnEnd: string;
-  gridRow: string;
-  gridRowStart: string;
-  gridRowEnd: string;
-  gridTemplate: string;
-  gridTemplateAreas: string;
-  gridTemplateRows: string;
-  gridTemplateColumns: string;
-  height: string;
-  hyphens: string;
-  imageRendering: string;
-  imageResolution: string;
-  imageOrientation: string;
-  imeMode: string;
-  inherit: string;
-  initial: string;
-  inlineSize: string;
-  isolation: string;
-  justifyContent: string;
-  left: string;
-  letterSpacing: string;
-  lineBreak: string;
-  lineHeight: string;
-  listStyle: string;
-  listStyleImage: string;
-  listStylePosition: string;
-  listStyleType: string;
-  margin: string;
-  marginBlockEnd: string;
-  marginBlockStart: string;
-  marginBottom: string;
-  marginInlineEnd: string;
-  marginInlineStart: string;
-  marginLeft: string;
-  marginRight: string;
-  marginTop: string;
-  marks: string;
-  mask: string;
-  maskType: string;
-  maxBlockSize: string;
-  maxHeight: string;
-  maxInlineSize: string;
-  maxWidth: string;
-  minBlockSize: string;
-  minHeight: string;
-  minInlineSize: string;
-  minWidth: string;
-  mixBlendMode: string;
-  mozTransform: string;
-  mozTransformOrigin: string;
-  mozTransitionDelay: string;
-  mozTransitionDuration: string;
-  mozTransitionProperty: string;
-  mozTransitionTimingFunction: string;
-  objectFit: string;
-  objectPosition: string;
-  offsetBlockEnd: string;
-  offsetBlockStart: string;
-  offsetInlineEnd: string;
-  offsetInlineStart: string;
-  opacity: string;
-  order: string;
-  orphans: string;
-  outline: string;
-  outlineColor: string;
-  outlineOffset: string;
-  outlineStyle: string;
-  outlineWidth: string;
-  overflow: string;
-  overflowWrap: string;
-  overflowX: string;
-  overflowY: string;
-  padding: string;
-  paddingBlockEnd: string;
-  paddingBlockStart: string;
-  paddingBottom: string;
-  paddingInlineEnd: string;
-  paddingInlineStart: string;
-  paddingLeft: string;
-  paddingRight: string;
-  paddingTop: string;
-  pageBreakAfter: string;
-  pageBreakBefore: string;
-  pageBreakInside: string;
-  perspective: string;
-  perspectiveOrigin: string;
-  pointerEvents: string;
-  position: string;
-  quotes: string;
-  rad: string;
-  resize: string;
-  right: string;
-  rubyAlign: string;
-  rubyMerge: string;
-  rubyPosition: string;
-  scrollBehavior: string;
-  scrollSnapCoordinate: string;
-  scrollSnapDestination: string;
-  scrollSnapPointsX: string;
-  scrollSnapPointsY: string;
-  scrollSnapType: string;
-  shapeImageThreshold: string;
-  shapeMargin: string;
-  shapeOutside: string;
-  tableLayout: string;
-  tabSize: string;
-  textAlign: string;
-  textAlignLast: string;
-  textCombineUpright: string;
-  textDecoration: string;
-  textDecorationColor: string;
-  textDecorationLine: string;
-  textDecorationStyle: string;
-  textIndent: string;
-  textOrientation: string;
-  textOverflow: string;
-  textRendering: string;
-  textShadow: string;
-  textTransform: string;
-  textUnderlinePosition: string;
-  top: string;
-  touchAction: string;
-  transform: string;
-  transformOrigin: string;
-  transformStyle: string;
-  transition: string;
-  transitionDelay: string;
-  transitionDuration: string;
-  transitionProperty: string;
-  transitionTimingFunction: string;
-  turn: string;
-  unicodeBidi: string;
-  unicodeRange: string;
-  userSelect: string;
-  verticalAlign: string;
-  visibility: string;
-  webkitOverflowScrolling: string;
-  webkitTransform: string;
-  webkitTransformOrigin: string;
-  webkitTransitionDelay: string;
-  webkitTransitionDuration: string;
-  webkitTransitionProperty: string;
-  webkitTransitionTimingFunction: string;
-  whiteSpace: string;
-  widows: string;
-  width: string;
-  willChange: string;
-  wordBreak: string;
-  wordSpacing: string;
-  wordWrap: string;
-  writingMode: string;
-  zIndex: string;
-
-  cssFloat: string;
-  cssText: string;
-  getPropertyPriority(property: string): string;
-  getPropertyValue(property:string): string;
-  item(index: number): string;
-  [index: number]: string;
-  length: number;
-  parentRule: CSSRule;
-  removeProperty(property: string): string;
-  setProperty(property: string, value: ?string, priority: ?string): void;
-  setPropertyPriority(property: string, priority: string): void;
-}
-
-declare class TransitionEvent extends Event {
-  elapsedTime: number; // readonly
-  pseudoElement: string; // readonly
-  propertyName: string; // readonly
-}
-
-type AnimationPlayState = 'idle' | 'running' | 'paused' | 'finished'
-type AnimationReplaceState = 'active' | 'removed' | 'persisted'
-type FillMode = 'none' | 'forwards' | 'backwards' | 'both' | 'auto'
-type PlaybackDirection = 'normal' | 'reverse' | 'alternate' | 'alternate-reverse'
-type IterationCompositeOperation = 'replace' | 'accumulate'
-type CompositeOperation = 'replace' | 'add' | 'accumulate'
-type CompositeOperationOrAuto = CompositeOperation | 'auto'
-
-declare class AnimationTimeline {
-  +currentTime: number | null;
-}
-
-type DocumentTimelineOptions = {
-  originTime?: DOMHighResTimeStamp;
-  ...
-}
-
-declare class DocumentTimeline extends AnimationTimeline {
-  constructor(options?: DocumentTimelineOptions): void;
-}
-
-type EffectTiming = {
-  delay: number;
-  endDelay: number;
-  fill: FillMode;
-  iterationStart: number;
-  iterations: number;
-  duration: number | string;
-  direction: PlaybackDirection;
-  easing: string;
-  ...
-}
-
-type OptionalEffectTiming = $Rest<EffectTiming, {...}>
-
-type ComputedEffectTiming = EffectTiming & {
-  endTime: number;
-  activeDuration: number;
-  localTime: number | null;
-  progress: number | null;
-  currentIteration: number | null;
-  ...
-}
-
-declare class AnimationEffect {
-  getTiming(): EffectTiming;
-  getComputedTiming(): ComputedEffectTiming;
-  updateTiming(timing?: OptionalEffectTiming): void;
-}
-
-type Keyframe = {
-  composite?: CompositeOperationOrAuto;
-  easing?: string;
-  offset?: number | null;
-  [property: string]: string | number | null | void;
-  ...
-}
-
-type ComputedKeyframe = {
-  composite: CompositeOperationOrAuto;
-  computedOffset: number;
-  easing: string;
-  offset: number | null;
-  [property: string]: string | number | null | void;
-  ...
-}
-
-type PropertyIndexedKeyframes = {
-  composite?: CompositeOperationOrAuto | CompositeOperationOrAuto[];
-  easing?: string | string[];
-  offset?: number | (number | null)[];
-  [property: string]: string | string[] | number | null | (number | null)[] | void;
-  ...
-}
-
-type KeyframeEffectOptions = $Rest<EffectTiming, {...}> & {
-  iterationComposite?: IterationCompositeOperation;
-  composite?: CompositeOperation;
-  ...
-}
-
-declare class KeyframeEffect extends AnimationEffect {
-  constructor(
-    target: Element | null,
-    keyframes: Keyframe[] | PropertyIndexedKeyframes | null,
-    options?: number | KeyframeEffectOptions,
-  ): void;
-  constructor(source: KeyframeEffect): void;
-
-  target: Element | null;
-  iterationComposite: IterationCompositeOperation;
-  composite: CompositeOperation;
-  getKeyframes(): ComputedKeyframe[];
-  setKeyframes(keyframes: Keyframe[] | PropertyIndexedKeyframes | null): void;
-}
-
-declare class Animation extends EventTarget {
-  constructor(effect?: AnimationEffect | null, timeline?: AnimationTimeline | null): void;
-
-  id: string;
-  effect: AnimationEffect | null;
-  timeline: AnimationTimeline | null;
-  startTime: number | null;
-  currentTime: number | null;
-  playbackRate: number;
-  +playState: AnimationPlayState;
-  +replaceState: AnimationReplaceState;
-  +pending: boolean;
-  +ready: Promise<Animation>;
-  +finished: Promise<Animation>;
-  onfinish: ?((ev: AnimationPlaybackEvent) => mixed);
-  oncancel: ?((ev: AnimationPlaybackEvent) => mixed);
-  onremove: ?((ev: AnimationPlaybackEvent) => mixed);
-  cancel(): void;
-  finish(): void;
-  play(): void;
-  pause(): void;
-  updatePlaybackRate(playbackRate: number): void;
-  reverse(): void;
-  persist(): void;
-  commitStyles(): void;
-}
-
-type KeyframeAnimationOptions = KeyframeEffectOptions & {
-  id?: string;
-  ...
-}
-
-type GetAnimationsOptions = {
-  subtree?: boolean;
-  ...
-}
-
-interface Animatable {
-  animate(keyframes: Keyframe[] | PropertyIndexedKeyframes | null, options?: number | KeyframeAnimationOptions): Animation;
-  getAnimations(options?: GetAnimationsOptions): Animation[];
-}
-
-type AnimationPlaybackEvent$Init = Event$Init & {
-  currentTime?: number | null;
-  timelineTime?: number | null;
-  ...
-}
-
-declare class AnimationPlaybackEvent extends Event {
-  constructor(type: string, animationEventInitDict?: AnimationPlaybackEvent$Init): void;
-  +currentTime: number | null;
-  +timelineTime: number | null;
-}
diff --git a/lib/dom.js b/lib/dom.js
deleted file mode 100644
index 8ecf31c5f4d..00000000000
--- a/lib/dom.js
+++ /dev/null
@@ -1,4471 +0,0 @@
-/**
- * Copyright (c) Meta Platforms, Inc. and affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- *
- * Copyright (c) Microsoft Corporation. All rights reserved.
- * Modifications Copyright (c) Meta Platforms, Inc. and affiliates.
- *
- * Licensed under the Apache License, Version 2.0 (the "License"); you may not use
- * this file except in compliance with the License. You may obtain a copy of the
- * License at http://www.apache.org/licenses/LICENSE-2.0
- * THIS CODE IS PROVIDED ON AN *AS IS* BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
- * KIND, EITHER EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION ANY IMPLIED
- * WARRANTIES OR CONDITIONS OF TITLE, FITNESS FOR A PARTICULAR PURPOSE,
- * MERCHANTABLITY OR NON-INFRINGEMENT.
- * See the Apache Version 2.0 License for specific language governing permissions
- * and limitations under the License.
- *
- * Portions copyright (c) World Wide Web Consortium, (Massachusetts Institute
- * of Technology, European Research Consortium for Informatics and Mathematics,
- * Keio University, Beihang). All Rights Reserved. This work is distributed
- * under the W3C Software and Document License [1] in the hope that it will
- * be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
- * [1] http://www.w3.org/Consortium/Legal/copyright-software
- *
- * @flow
- */
-// @lint-ignore-every LICENSELINT
-
-/* Files */
-
-declare class Blob {
-  constructor(blobParts?: Array<any>, options?: {
-         type?: string,
-         endings?: string,
-         ...
-  }): void;
-  isClosed: boolean;
-  size: number;
-  type: string;
-  close(): void;
-  slice(start?: number, end?: number, contentType?: string): Blob;
-  arrayBuffer(): Promise<ArrayBuffer>;
-  text(): Promise<string>,
-  stream(): ReadableStream,
-}
-
-declare class FileReader extends EventTarget {
-  +EMPTY: 0;
-  +LOADING: 1;
-  +DONE: 2;
-  +error: null | DOMError;
-  +readyState: 0 | 1 | 2;
-  +result: null | string | ArrayBuffer;
-  abort(): void;
-  onabort: null | (ev: ProgressEvent) => any;
-  onerror: null | (ev: ProgressEvent) => any;
-  onload: null | (ev: ProgressEvent) => any;
-  onloadend: null | (ev: ProgressEvent) => any;
-  onloadstart: null | (ev: ProgressEvent) => any;
-  onprogress: null | (ev: ProgressEvent) => any;
-  readAsArrayBuffer(blob: Blob): void;
-  readAsBinaryString(blob: Blob): void;
-  readAsDataURL(blob: Blob): void;
-  readAsText(blob: Blob, encoding?: string): void;
-}
-
-declare type FilePropertyBag = {
-       type?: string,
-       lastModified?: number,
-       ...
-};
-declare class File extends Blob {
-  constructor(
-    fileBits: $ReadOnlyArray<string | BufferDataSource | Blob>,
-    filename: string,
-    options?: FilePropertyBag,
-  ): void;
-  lastModified: number;
-  name: string;
-}
-
-declare class FileList {
-  @@iterator(): Iterator<File>;
-  length: number;
-  item(index: number): File;
-  [index: number]: File;
-}
-
-/* DataTransfer */
-
-declare class DataTransfer {
-  clearData(format?: string): void;
-  getData(format: string): string;
-  setData(format: string, data: string): void;
-  setDragImage(image: Element, x: number, y: number): void;
-  dropEffect: string;
-  effectAllowed: string;
-  files: FileList; // readonly
-  items: DataTransferItemList; // readonly
-  types: Array<string>; // readonly
-}
-
-declare class DataTransferItemList {
-  @@iterator(): Iterator<DataTransferItem>;
-  length: number; // readonly
-  [index: number]: DataTransferItem;
-  add(data: string, type: string): ?DataTransferItem;
-  add(data: File): ?DataTransferItem;
-  remove(index: number): void;
-  clear(): void;
-};
-
-// https://wicg.github.io/file-system-access/#drag-and-drop
-declare class DataTransferItem {
-  kind: string; // readonly
-  type: string; // readonly
-  getAsString(_callback: ?(data: string) => mixed): void;
-  getAsFile(): ?File;
-  /*
-   * This is not supported by all browsers, please have a fallback plan for it.
-   * For more information, please checkout
-   * https://developer.mozilla.org/en-US/docs/Web/API/DataTransferItem/webkitGetAsEntry
-   */
-  webkitGetAsEntry(): void | () => any;
-  /*
-   * Not supported in all browsers
-   * For up to date compatibility information, please visit
-   * https://developer.mozilla.org/en-US/docs/Web/API/DataTransferItem/getAsFileSystemHandle
-   */
-  getAsFileSystemHandle?: () => Promise<?FileSystemHandle>;
-};
-
-/* DOM */
-
-declare type DOMStringMap = { [key:string]: string, ... }
-
-declare class DOMStringList {
-  @@iterator(): Iterator<string>;
-  +[key:number]: string;
-  +length: number;
-  item(number): string | null;
-  contains(string): boolean;
-}
-
-declare class DOMError {
-  name: string;
-}
-
-declare type ElementDefinitionOptions = { extends?: string, ... }
-
-declare interface CustomElementRegistry {
-  define(name: string, ctor: Class<Element>, options?: ElementDefinitionOptions): void;
-  get(name: string): any;
-  whenDefined(name: string): Promise<void>;
-}
-
-declare interface ShadowRoot extends DocumentFragment {
-  +delegatesFocus: boolean;
-  +host: Element;
-  // flowlint unsafe-getters-setters:off
-  get innerHTML(): string;
-  set innerHTML(value: string | TrustedHTML): void;
-  // flowlint unsafe-getters-setters:error
-  +mode: ShadowRootMode;
-
-  // From DocumentOrShadowRoot Mixin.
-  +styleSheets: StyleSheetList;
-  adoptedStyleSheets: Array<CSSStyleSheet>;
-}
-
-declare type ShadowRootMode = 'open'|'closed';
-
-declare type ShadowRootInit = {
-       delegatesFocus?: boolean,
-       mode: ShadowRootMode,
-       ...
-}
-
-declare type ScrollToOptions = {
-  top?: number;
-  left?: number;
-  behavior?: 'auto' | 'smooth';
-  ...
-}
-
-type EventHandler = (event: Event) => mixed
-type EventListener = { handleEvent: EventHandler, ... } | EventHandler
-type MouseEventHandler = (event: MouseEvent) => mixed
-type MouseEventListener = { handleEvent: MouseEventHandler, ... } | MouseEventHandler
-type FocusEventHandler = (event: FocusEvent) => mixed
-type FocusEventListener = { handleEvent: FocusEventHandler, ... } | FocusEventHandler
-type KeyboardEventHandler = (event: KeyboardEvent) => mixed
-type KeyboardEventListener = { handleEvent: KeyboardEventHandler, ... } | KeyboardEventHandler
-type InputEventHandler = (event: InputEvent) => mixed
-type InputEventListener = { handleEvent: InputEventHandler, ... } | InputEventHandler
-type TouchEventHandler = (event: TouchEvent) => mixed
-type TouchEventListener = { handleEvent: TouchEventHandler, ... } | TouchEventHandler
-type WheelEventHandler = (event: WheelEvent) => mixed
-type WheelEventListener = { handleEvent: WheelEventHandler, ... } | WheelEventHandler
-type AbortProgressEventHandler = (event: ProgressEvent) => mixed
-type AbortProgressEventListener = { handleEvent: AbortProgressEventHandler, ... } | AbortProgressEventHandler
-type ProgressEventHandler = (event: ProgressEvent) => mixed
-type ProgressEventListener = { handleEvent: ProgressEventHandler, ... } | ProgressEventHandler
-type DragEventHandler = (event: DragEvent) => mixed
-type DragEventListener = { handleEvent: DragEventHandler, ... } | DragEventHandler
-type PointerEventHandler = (event: PointerEvent) => mixed
-type PointerEventListener = { handleEvent: PointerEventHandler, ... } | PointerEventHandler
-type AnimationEventHandler = (event: AnimationEvent) => mixed
-type AnimationEventListener = { handleEvent: AnimationEventHandler, ... } | AnimationEventHandler
-type ClipboardEventHandler = (event: ClipboardEvent) => mixed
-type ClipboardEventListener = { handleEvent: ClipboardEventHandler, ... } | ClipboardEventHandler
-type TransitionEventHandler = (event: TransitionEvent) => mixed
-type TransitionEventListener = { handleEvent: TransitionEventHandler, ... } | TransitionEventHandler
-type MessageEventHandler = (event: MessageEvent) => mixed
-type MessageEventListener = { handleEvent: MessageEventHandler, ... } | MessageEventHandler
-type BeforeUnloadEventHandler = (event: BeforeUnloadEvent) => mixed
-type BeforeUnloadEventListener = { handleEvent: BeforeUnloadEventHandler, ... } | BeforeUnloadEventHandler
-type StorageEventHandler = (event: StorageEvent) => mixed
-type StorageEventListener = { handleEvent: StorageEventHandler, ... } | StorageEventHandler
-type SecurityPolicyViolationEventHandler = (event: SecurityPolicyViolationEvent) => mixed
-type SecurityPolicyViolationEventListener = { handleEvent: SecurityPolicyViolationEventHandler, ... } | SecurityPolicyViolationEventHandler
-type USBConnectionEventHandler = (event: USBConnectionEvent) => mixed
-type USBConnectionEventListener = { handleEvent: USBConnectionEventHandler, ... } | USBConnectionEventHandler
-
-type MediaKeySessionType = 'temporary' | 'persistent-license';
-type MediaKeyStatus = 'usable' | 'expired' | 'released' | 'output-restricted' | 'output-downscaled' | 'status-pending' | 'internal-error';
-type MouseEventTypes = 'contextmenu' | 'mousedown' | 'mouseenter' | 'mouseleave' | 'mousemove' | 'mouseout' | 'mouseover' | 'mouseup' | 'click' | 'dblclick';
-type FocusEventTypes = 'blur' | 'focus' | 'focusin' | 'focusout';
-type KeyboardEventTypes = 'keydown' | 'keyup' | 'keypress';
-type InputEventTypes = 'input' | 'beforeinput'
-type TouchEventTypes = 'touchstart' | 'touchmove' | 'touchend' | 'touchcancel';
-type WheelEventTypes = 'wheel';
-type AbortProgressEventTypes = 'abort';
-type ProgressEventTypes = 'abort' | 'error' | 'load' | 'loadend' | 'loadstart' | 'progress' | 'timeout';
-type DragEventTypes = 'drag' | 'dragend' | 'dragenter' | 'dragexit' | 'dragleave' | 'dragover' | 'dragstart' | 'drop';
-type PointerEventTypes = 'pointerover' | 'pointerenter' | 'pointerdown' | 'pointermove' | 'pointerup' | 'pointercancel' | 'pointerout' | 'pointerleave' | 'gotpointercapture' | 'lostpointercapture';
-type AnimationEventTypes = 'animationstart' | 'animationend' | 'animationiteration';
-type ClipboardEventTypes = 'clipboardchange' | 'cut' | 'copy' | 'paste';
-type TransitionEventTypes = 'transitionrun' | 'transitionstart' | 'transitionend' | 'transitioncancel';
-type MessageEventTypes = string;
-type BeforeUnloadEventTypes = 'beforeunload';
-type StorageEventTypes = 'storage';
-type SecurityPolicyViolationEventTypes = 'securitypolicyviolation';
-type USBConnectionEventTypes = 'connect' | 'disconnect';
-
-type EventListenerOptionsOrUseCapture = boolean | {
-       capture?: boolean,
-       once?: boolean,
-       passive?: boolean,
-       signal?: AbortSignal,
-       ...
-};
-
-declare class EventTarget {
-  addEventListener(type: MouseEventTypes, listener: MouseEventListener, optionsOrUseCapture?: EventListenerOptionsOrUseCapture): void;
-  addEventListener(type: FocusEventTypes, listener: FocusEventListener, optionsOrUseCapture?: EventListenerOptionsOrUseCapture): void;
-  addEventListener(type: KeyboardEventTypes, listener: KeyboardEventListener, optionsOrUseCapture?: EventListenerOptionsOrUseCapture): void;
-  addEventListener(type: InputEventTypes, listener: InputEventListener, optionsOrUseCapture?: EventListenerOptionsOrUseCapture): void;
-  addEventListener(type: TouchEventTypes, listener: TouchEventListener, optionsOrUseCapture?: EventListenerOptionsOrUseCapture): void;
-  addEventListener(type: WheelEventTypes, listener: WheelEventListener, optionsOrUseCapture?: EventListenerOptionsOrUseCapture): void;
-  addEventListener(type: AbortProgressEventTypes, listener: AbortProgressEventListener, optionsOrUseCapture?: EventListenerOptionsOrUseCapture): void;
-  addEventListener(type: ProgressEventTypes, listener: ProgressEventListener, optionsOrUseCapture?: EventListenerOptionsOrUseCapture): void;
-  addEventListener(type: DragEventTypes, listener: DragEventListener, optionsOrUseCapture?: EventListenerOptionsOrUseCapture): void;
-  addEventListener(type: PointerEventTypes, listener: PointerEventListener, optionsOrUseCapture?: EventListenerOptionsOrUseCapture): void;
-  addEventListener(type: AnimationEventTypes, listener: AnimationEventListener, optionsOrUseCapture?: EventListenerOptionsOrUseCapture): void;
-  addEventListener(type: ClipboardEventTypes, listener: ClipboardEventListener, optionsOrUseCapture?: EventListenerOptionsOrUseCapture): void;
-  addEventListener(type: TransitionEventTypes, listener: TransitionEventListener, optionsOrUseCapture?: EventListenerOptionsOrUseCapture): void;
-  addEventListener(type: MessageEventTypes, listener: MessageEventListener, optionsOrUseCapture?: EventListenerOptionsOrUseCapture): void;
-  addEventListener(type: BeforeUnloadEventTypes, listener: BeforeUnloadEventListener, optionsOrUseCapture?: EventListenerOptionsOrUseCapture): void;
-  addEventListener(type: StorageEventTypes, listener: StorageEventListener, optionsOrUseCapture?: EventListenerOptionsOrUseCapture): void;
-  addEventListener(type: SecurityPolicyViolationEventTypes, listener: SecurityPolicyViolationEventListener, optionsOrUseCapture?: EventListenerOptionsOrUseCapture): void;
-  addEventListener(type: USBConnectionEventTypes, listener: USBConnectionEventListener, optionsOrUseCapture?: EventListenerOptionsOrUseCapture): void;
-  addEventListener(type: string, listener: EventListener, optionsOrUseCapture?: EventListenerOptionsOrUseCapture): void;
-
-  removeEventListener(type: MouseEventTypes, listener: MouseEventListener, optionsOrUseCapture?: EventListenerOptionsOrUseCapture): void;
-  removeEventListener(type: FocusEventTypes, listener: FocusEventListener, optionsOrUseCapture?: EventListenerOptionsOrUseCapture): void;
-  removeEventListener(type: KeyboardEventTypes, listener: KeyboardEventListener, optionsOrUseCapture?: EventListenerOptionsOrUseCapture): void;
-  removeEventListener(type: InputEventTypes, listener: InputEventListener, optionsOrUseCapture?: EventListenerOptionsOrUseCapture): void;
-  removeEventListener(type: TouchEventTypes, listener: TouchEventListener, optionsOrUseCapture?: EventListenerOptionsOrUseCapture): void;
-  removeEventListener(type: WheelEventTypes, listener: WheelEventListener, optionsOrUseCapture?: EventListenerOptionsOrUseCapture): void;
-  removeEventListener(type: AbortProgressEventTypes, listener: AbortProgressEventListener, optionsOrUseCapture?: EventListenerOptionsOrUseCapture): void;
-  removeEventListener(type: ProgressEventTypes, listener: ProgressEventListener, optionsOrUseCapture?: EventListenerOptionsOrUseCapture): void;
-  removeEventListener(type: DragEventTypes, listener: DragEventListener, optionsOrUseCapture?: EventListenerOptionsOrUseCapture): void;
-  removeEventListener(type: PointerEventTypes, listener: PointerEventListener, optionsOrUseCapture?: EventListenerOptionsOrUseCapture): void;
-  removeEventListener(type: AnimationEventTypes, listener: AnimationEventListener, optionsOrUseCapture?: EventListenerOptionsOrUseCapture): void;
-  removeEventListener(type: ClipboardEventTypes, listener: ClipboardEventListener, optionsOrUseCapture?: EventListenerOptionsOrUseCapture): void;
-  removeEventListener(type: TransitionEventTypes, listener: TransitionEventListener, optionsOrUseCapture?: EventListenerOptionsOrUseCapture): void;
-  removeEventListener(type: MessageEventTypes, listener: MessageEventListener, optionsOrUseCapture?: EventListenerOptionsOrUseCapture): void;
-  removeEventListener(type: BeforeUnloadEventTypes, listener: BeforeUnloadEventListener, optionsOrUseCapture?: EventListenerOptionsOrUseCapture): void;
-  removeEventListener(type: StorageEventTypes, listener: StorageEventListener, optionsOrUseCapture?: EventListenerOptionsOrUseCapture): void;
-  removeEventListener(type: SecurityPolicyViolationEventTypes, listener: SecurityPolicyViolationEventListener, optionsOrUseCapture?: EventListenerOptionsOrUseCapture): void;
-  removeEventListener(type: USBConnectionEventTypes, listener: USBConnectionEventListener, optionsOrUseCapture?: EventListenerOptionsOrUseCapture): void;
-  removeEventListener(type: string, listener: EventListener, optionsOrUseCapture?: EventListenerOptionsOrUseCapture): void;
-
-  attachEvent?: (type: MouseEventTypes, listener: MouseEventListener) => void;
-  attachEvent?: (type: FocusEventTypes, listener: FocusEventListener) => void;
-  attachEvent?: (type: KeyboardEventTypes, listener: KeyboardEventListener) => void;
-  attachEvent?: (type: InputEventTypes, listener: InputEventListener) => void;
-  attachEvent?: (type: TouchEventTypes, listener: TouchEventListener) => void;
-  attachEvent?: (type: WheelEventTypes, listener: WheelEventListener) => void;
-  attachEvent?: (type: AbortProgressEventTypes, listener: AbortProgressEventListener) => void;
-  attachEvent?: (type: ProgressEventTypes, listener: ProgressEventListener) => void;
-  attachEvent?: (type: DragEventTypes, listener: DragEventListener) => void;
-  attachEvent?: (type: PointerEventTypes, listener: PointerEventListener) => void;
-  attachEvent?: (type: AnimationEventTypes, listener: AnimationEventListener) => void;
-  attachEvent?: (type: ClipboardEventTypes, listener: ClipboardEventListener) => void;
-  attachEvent?: (type: TransitionEventTypes, listener: TransitionEventListener) => void;
-  attachEvent?: (type: MessageEventTypes, listener: MessageEventListener) => void;
-  attachEvent?: (type: BeforeUnloadEventTypes, listener: BeforeUnloadEventListener) => void;
-  attachEvent?: (type: StorageEventTypes, listener: StorageEventListener) => void;
-  attachEvent?: (type: USBConnectionEventTypes, listener: USBConnectionEventListener) => void;
-  attachEvent?: (type: string, listener: EventListener) => void;
-
-  detachEvent?: (type: MouseEventTypes, listener: MouseEventListener) => void;
-  detachEvent?: (type: FocusEventTypes, listener: FocusEventListener) => void;
-  detachEvent?: (type: KeyboardEventTypes, listener: KeyboardEventListener) => void;
-  detachEvent?: (type: InputEventTypes, listener: InputEventListener) => void;
-  detachEvent?: (type: TouchEventTypes, listener: TouchEventListener) => void;
-  detachEvent?: (type: WheelEventTypes, listener: WheelEventListener) => void;
-  detachEvent?: (type: AbortProgressEventTypes, listener: AbortProgressEventListener) => void;
-  detachEvent?: (type: ProgressEventTypes, listener: ProgressEventListener) => void;
-  detachEvent?: (type: DragEventTypes, listener: DragEventListener) => void;
-  detachEvent?: (type: PointerEventTypes, listener: PointerEventListener) => void;
-  detachEvent?: (type: AnimationEventTypes, listener: AnimationEventListener) => void;
-  detachEvent?: (type: ClipboardEventTypes, listener: ClipboardEventListener) => void;
-  detachEvent?: (type: TransitionEventTypes, listener: TransitionEventListener) => void;
-  detachEvent?: (type: MessageEventTypes, listener: MessageEventListener) => void;
-  detachEvent?: (type: BeforeUnloadEventTypes, listener: BeforeUnloadEventListener) => void;
-  detachEvent?: (type: StorageEventTypes, listener: StorageEventListener) => void;
-  detachEvent?: (type: USBConnectionEventTypes, listener: USBConnectionEventListener) => void;
-  detachEvent?: (type: string, listener: EventListener) => void;
-
-  dispatchEvent(evt: Event): boolean;
-
-  // Deprecated
-
-  cancelBubble: boolean;
-  initEvent(eventTypeArg: string, canBubbleArg: boolean, cancelableArg: boolean): void;
-}
-
-// https://dom.spec.whatwg.org/#dictdef-eventinit
-type Event$Init = {
-  bubbles?: boolean,
-  cancelable?: boolean,
-  composed?: boolean,
-  /** Non-standard. See `composed` instead. */
-  scoped?: boolean,
-  ...
-}
-
-// https://dom.spec.whatwg.org/#interface-event
-declare class Event {
-  constructor(type: string, eventInitDict?: Event$Init): void;
-  /**
-   * Returns the type of event, e.g. "click", "hashchange", or "submit".
-   */
-  +type: string;
-  /**
-   * Returns the object to which event is dispatched (its target).
-   */
-  +target: EventTarget; // TODO: nullable
-  /** @deprecated */
-  +srcElement: Element; // TODO: nullable
-  /**
-   * Returns the object whose event listener's callback is currently being invoked.
-   */
-  +currentTarget: EventTarget; // TODO: nullable
-  /**
-   * Returns the invocation target objects of event's path (objects on which
-   * listeners will be invoked), except for any nodes in shadow trees of which
-   * the shadow root's mode is "closed" that are not reachable from event's
-   * currentTarget.
-   */
-  composedPath(): Array<EventTarget>;
-
-  +NONE: number;
-  +AT_TARGET: number;
-  +BUBBLING_PHASE: number;
-  +CAPTURING_PHASE: number;
-  /**
-   * Returns the event's phase, which is one of NONE, CAPTURING_PHASE, AT_TARGET,
-   * and BUBBLING_PHASE.
-   */
-  +eventPhase: number;
-
-  /**
-   * When dispatched in a tree, invoking this method prevents event from reaching
-   * any objects other than the current object.
-   */
-  stopPropagation(): void;
-  /**
-   * Invoking this method prevents event from reaching any registered event
-   * listeners after the current one finishes running and, when dispatched in a
-   * tree, also prevents event from reaching any other objects.
-   */
-  stopImmediatePropagation(): void;
-
-  /**
-   * Returns true or false depending on how event was initialized. True if
-   * event goes through its target's ancestors in reverse tree order, and
-   * false otherwise.
-   */
-  +bubbles: boolean;
-  /**
-   * Returns true or false depending on how event was initialized. Its
-   * return value does not always carry meaning, but true can indicate
-   * that part of the operation during which event was dispatched, can
-   * be canceled by invoking the preventDefault() method.
-   */
-  +cancelable: boolean;
-  // returnValue: boolean; // legacy, and some subclasses still define it as a string!
-  /**
-   * If invoked when the cancelable attribute value is true, and while
-   * executing a listener for the event with passive set to false, signals to
-   * the operation that caused event to be dispatched that it needs to be
-   * canceled.
-   */
-  preventDefault(): void;
-  /**
-   * Returns true if preventDefault() was invoked successfully to indicate
-   * cancelation, and false otherwise.
-   */
-  +defaultPrevented: boolean;
-  /**
-   * Returns true or false depending on how event was initialized. True if
-   * event invokes listeners past a ShadowRoot node that is the root of its
-   * target, and false otherwise.
-   */
-  +composed: boolean;
-
-  /**
-   * Returns true if event was dispatched by the user agent, and false otherwise.
-   */
-  +isTrusted: boolean;
-  /**
-   * Returns the event's timestamp as the number of milliseconds measured relative
-   * to the time origin.
-   */
-  +timeStamp: number;
-
-  /** Non-standard. See Event.prototype.composedPath */
-  +deepPath?: () => EventTarget[];
-  /** Non-standard. See Event.prototype.composed */
-  +scoped: boolean;
-
-  /**
-   * @deprecated
-   */
-  initEvent(
-    type: string,
-    bubbles: boolean,
-    cancelable: boolean
-  ): void;
-}
-
-type CustomEvent$Init = { ...Event$Init, detail?: any, ... }
-
-declare class CustomEvent extends Event {
-  constructor(type: string, eventInitDict?: CustomEvent$Init): void;
-  detail: any;
-
-  // deprecated
-  initCustomEvent(
-    type: string,
-    bubbles: boolean,
-    cancelable: boolean,
-    detail: any
-  ): CustomEvent;
-}
-
-type UIEvent$Init = { ...Event$Init, detail?: number, view?: any, ... }
-
-declare class UIEvent extends Event {
-  constructor(typeArg: string, uiEventInit?: UIEvent$Init): void;
-  detail: number;
-  view: any;
-}
-
-declare class CompositionEvent extends UIEvent {
-  data: string | null;
-  locale: string,
-}
-
-type MouseEvent$MouseEventInit = {
-       screenX?: number,
-       screenY?: number,
-       clientX?: number,
-       clientY?: number,
-       ctrlKey?: boolean,
-       shiftKey?: boolean,
-       altKey?: boolean,
-       metaKey?: boolean,
-       button?: number,
-       buttons?: number,
-       region?: string | null,
-       relatedTarget?: EventTarget | null,
-       ...
-};
-
-declare class MouseEvent extends UIEvent {
-  constructor(
-    typeArg: string,
-    mouseEventInit?: MouseEvent$MouseEventInit,
-  ): void;
-  altKey: boolean;
-  button: number;
-  buttons: number;
-  clientX: number;
-  clientY: number;
-  ctrlKey: boolean;
-  metaKey: boolean;
-  movementX: number;
-  movementY: number;
-  offsetX: number;
-  offsetY: number;
-  pageX: number;
-  pageY: number;
-  region: string | null;
-  relatedTarget: EventTarget | null;
-  screenX: number;
-  screenY: number;
-  shiftKey: boolean;
-  x: number;
-  y: number;
-  getModifierState(keyArg: string): boolean;
-}
-
-declare class FocusEvent extends UIEvent {
-  relatedTarget: ?EventTarget;
-}
-
-type WheelEvent$Init = {
-  ...MouseEvent$MouseEventInit,
-  deltaX?: number,
-  deltaY?: number,
-  deltaZ?: number;
-  deltaMode?: 0x00 | 0x01 | 0x02,
-  ...
-}
-
-declare class WheelEvent extends MouseEvent {
-  static +DOM_DELTA_PIXEL: 0x00;
-  static +DOM_DELTA_LINE: 0x01;
-  static +DOM_DELTA_PAGE: 0x02;
-
-  constructor(type: string, eventInitDict?: WheelEvent$Init): void;
-  +deltaX: number;
-  +deltaY: number;
-  +deltaZ: number;
-  +deltaMode: 0x00 | 0x01 | 0x02;
-}
-
-declare class DragEvent extends MouseEvent {
-  dataTransfer: ?DataTransfer; // readonly
-}
-
-type PointerEvent$PointerEventInit = MouseEvent$MouseEventInit & {
-       pointerId?: number,
-       width?: number,
-       height?: number,
-       pressure?: number,
-       tangentialPressure?: number,
-       tiltX?: number,
-       tiltY?: number,
-       twist?: number,
-       pointerType?: string,
-       isPrimary?: boolean,
-       ...
-};
-
-declare class PointerEvent extends MouseEvent {
-  constructor(
-    typeArg: string,
-    pointerEventInit?: PointerEvent$PointerEventInit,
-  ): void;
-  pointerId: number;
-  width: number;
-  height: number;
-  pressure: number;
-  tangentialPressure: number;
-  tiltX: number;
-  tiltY: number;
-  twist: number;
-  pointerType: string;
-  isPrimary: boolean;
-}
-
-declare class ProgressEvent extends Event {
-  lengthComputable: boolean;
-  loaded: number;
-  total: number;
-
-  // Deprecated
-  initProgressEvent(
-    typeArg: string,
-    canBubbleArg: boolean,
-    cancelableArg: boolean,
-    lengthComputableArg: boolean,
-    loadedArg: number,
-    totalArg: number
-  ): void;
-}
-
-declare class PromiseRejectionEvent extends Event {
-  promise: Promise<any>;
-  reason: any;
-}
-
-type PageTransitionEventInit = {
-  ...Event$Init,
-  persisted: boolean,
-  ...
-}
-
-// https://html.spec.whatwg.org/multipage/browsing-the-web.html#the-pagetransitionevent-interface
-declare class PageTransitionEvent extends Event {
-  constructor(type: string, init?: PageTransitionEventInit): void;
-  +persisted: boolean;
-}
-
-// used for websockets and postMessage, for example. See:
-// https://www.w3.org/TR/2011/WD-websockets-20110419/
-// and
-// https://www.w3.org/TR/2008/WD-html5-20080610/comms.html
-// and
-// https://html.spec.whatwg.org/multipage/comms.html#the-messageevent-interfaces
-declare class MessageEvent extends Event {
-  data: mixed;
-  origin: string;
-  lastEventId: string;
-  source: WindowProxy;
-}
-
-// https://www.w3.org/TR/eventsource/
-declare class EventSource extends EventTarget {
-  constructor(url: string, configuration?: { withCredentials: boolean, ... }): void;
-  +CLOSED: 2;
-  +CONNECTING: 0;
-  +OPEN: 1;
-  +readyState: 0 | 1 | 2;
-  +url: string;
-  +withCredentials: boolean;
-  onerror: () => void;
-  onmessage: MessageEventListener;
-  onopen: () => void;
-  close: () => void;
-}
-
-// https://w3c.github.io/uievents/#idl-keyboardeventinit
-type KeyboardEvent$Init = {
-  ...UIEvent$Init,
-  /**
-   * Initializes the `key` attribute of the KeyboardEvent object to the unicode
-   * character string representing the meaning of a key after taking into
-   * account all keyboard modifiers (such as shift-state). This value is the
-   * final effective value of the key. If the key is not a printable character,
-   * then it should be one of the key values defined in [UIEvents-Key](https://www.w3.org/TR/uievents-key/).
-   *
-   * NOTE: not `null`, this results in `evt.key === 'null'`!
-   */
-  key?: string | void,
-  /**
-   * Initializes the `code` attribute of the KeyboardEvent object to the unicode
-   * character string representing the key that was pressed, ignoring any
-   * keyboard modifications such as keyboard layout. This value should be one
-   * of the code values defined in [UIEvents-Code](https://www.w3.org/TR/uievents-code/).
-   *
-   * NOTE: not `null`, this results in `evt.code === 'null'`!
-   */
-  code?: string | void,
-  /**
-   * Initializes the `location` attribute of the KeyboardEvent object to one of
-   * the following location numerical constants:
-   *
-   *   DOM_KEY_LOCATION_STANDARD (numerical value 0)
-   *   DOM_KEY_LOCATION_LEFT (numerical value 1)
-   *   DOM_KEY_LOCATION_RIGHT (numerical value 2)
-   *   DOM_KEY_LOCATION_NUMPAD (numerical value 3)
-   */
-  location?: number,
-  /**
-   * Initializes the `ctrlKey` attribute of the KeyboardEvent object to true if
-   * the Control key modifier is to be considered active, false otherwise.
-   */
-  ctrlKey?: boolean,
-  /**
-   * Initializes the `shiftKey` attribute of the KeyboardEvent object to true if
-   * the Shift key modifier is to be considered active, false otherwise.
-   */
-  shiftKey?: boolean,
-  /**
-   * Initializes the `altKey` attribute of the KeyboardEvent object to true if
-   * the Alt (alternative) (or Option) key modifier is to be considered active,
-   * false otherwise.
-   */
-  altKey?: boolean,
-  /**
-   * Initializes the `metaKey` attribute of the KeyboardEvent object to true if
-   * the Meta key modifier is to be considered active, false otherwise.
-   */
-  metaKey?: boolean,
-  /**
-   * Initializes the `repeat` attribute of the KeyboardEvent object. This
-   * attribute should be set to true if the the current KeyboardEvent is
-   * considered part of a repeating sequence of similar events caused by the
-   * long depression of any single key, false otherwise.
-   */
-  repeat?: boolean,
-  /**
-   * Initializes the `isComposing` attribute of the KeyboardEvent object. This
-   * attribute should be set to true if the event being constructed occurs as
-   * part of a composition sequence, false otherwise.
-   */
-  isComposing?: boolean,
-  /**
-   * Initializes the `charCode` attribute of the KeyboardEvent to the Unicode
-   * code point for the event’s character.
-   */
-  charCode?: number,
-  /**
-   * Initializes the `keyCode` attribute of the KeyboardEvent to the system-
-   * and implementation-dependent numerical code signifying the unmodified
-   * identifier associated with the key pressed.
-   */
-  keyCode?: number,
-  /** Initializes the `which` attribute */
-  which?: number,
-  ...
-}
-
-// https://w3c.github.io/uievents/#idl-keyboardevent
-declare class KeyboardEvent extends UIEvent {
-  constructor(typeArg: string, init?: KeyboardEvent$Init): void;
-
-  /** `true` if the Alt (alternative) (or "Option") key modifier was active. */
-  +altKey: boolean;
-  /**
-   * Holds a string that identifies the physical key being pressed. The value
-   * is not affected by the current keyboard layout or modifier state, so a
-   * particular key will always return the same value.
-   */
-  +code: string;
-  /** `true` if the Control (control) key modifier was active. */
-  +ctrlKey: boolean;
-  /**
-   * `true` if the key event occurs as part of a composition session, i.e.,
-   * after a `compositionstart` event and before the corresponding
-   * `compositionend` event.
-   */
-  +isComposing: boolean;
-  /**
-   * Holds a [key attribute value](https://www.w3.org/TR/uievents-key/#key-attribute-value)
-   * corresponding to the key pressed. */
-  +key: string;
-  /** An indication of the logical location of the key on the device. */
-  +location: number;
-  /** `true` if the meta (Meta) key (or "Command") modifier was active. */
-  +metaKey: boolean;
-  /** `true` if the key has been pressed in a sustained manner. */
-  +repeat: boolean;
-  /** `true` if the shift (Shift) key modifier was active. */
-  +shiftKey: boolean;
-
-  /**
-   * Queries the state of a modifier using a key value.
-   *
-   * Returns `true` if it is a modifier key and the modifier is activated,
-   * `false` otherwise.
-   */
-  getModifierState(keyArg?: string): boolean;
-
-  /**
-   * Holds a character value, for keypress events which generate character
-   * input. The value is the Unicode reference number (code point) of that
-   * character (e.g. event.charCode = event.key.charCodeAt(0) for printable
-   * characters). For keydown or keyup events, the value of charCode is 0.
-   *
-   * @deprecated You should use KeyboardEvent.key instead, if available.
-   */
-  +charCode: number;
-  /**
-   * Holds a system- and implementation-dependent numerical code signifying
-   * the unmodified identifier associated with the key pressed. Unlike the
-   * `key` attribute, the set of possible values are not normatively defined.
-   * Typically, these value of the keyCode SHOULD represent the decimal
-   * codepoint in ASCII or Windows 1252, but MAY be drawn from a different
-   * appropriate character set. Implementations that are unable to identify
-   * a key use the key value 0.
-   *
-   * @deprecated You should use KeyboardEvent.key instead, if available.
-   */
-  +keyCode: number;
-  /**
-   * Holds a system- and implementation-dependent numerical code signifying
-   * the unmodified identifier associated with the key pressed. In most cases,
-   * the value is identical to keyCode.
-   *
-   * @deprecated You should use KeyboardEvent.key instead, if available.
-   */
-  +which: number;
-}
-
-type InputEvent$Init = {
-  ...UIEvent$Init,
-  inputType?: string,
-  data?: string,
-  dataTransfer?: DataTransfer,
-  isComposing?: boolean,
-  ranges?: Array<any>, // TODO: StaticRange
-  ...
-}
-
-declare class InputEvent extends UIEvent {
-  constructor(typeArg: string, inputEventInit: InputEvent$Init): void;
-  +data: string | null;
-  +dataTransfer: DataTransfer | null;
-  +inputType: string;
-  +isComposing: boolean;
-  getTargetRanges(): Array<any>; // TODO: StaticRange
-}
-
-declare class AnimationEvent extends Event {
-  animationName: string;
-  elapsedTime: number;
-  pseudoElement: string;
-
-  // deprecated
-
-  initAnimationEvent: (
-    type: 'animationstart' | 'animationend' | 'animationiteration',
-    canBubble: boolean,
-    cancelable: boolean,
-    animationName: string,
-    elapsedTime: number
-  ) => void;
-}
-
-// https://html.spec.whatwg.org/multipage/webappapis.html#the-errorevent-interface
-declare class ErrorEvent extends Event {
-  constructor(
-    type: string,
-    eventInitDict?: {
-      ...Event$Init,
-      message?: string,
-      filename?: string,
-      lineno?: number,
-      colno?: number,
-      error?: any,
-      ...
-    },
-  ): void;
-  +message: string;
-  +filename: string;
-  +lineno: number;
-  +colno: number;
-  +error: any;
-}
-
-// https://html.spec.whatwg.org/multipage/web-messaging.html#broadcasting-to-other-browsing-contexts
-declare class BroadcastChannel extends EventTarget {
-  name: string;
-  onmessage: ?(event: MessageEvent) => void;
-  onmessageerror: ?(event: MessageEvent) => void;
-
-  constructor(name: string): void;
-  postMessage(msg: mixed): void;
-  close(): void;
-}
-
-// https://www.w3.org/TR/touch-events/#idl-def-Touch
-declare class Touch {
-  clientX: number,
-  clientY: number,
-  identifier: number,
-  pageX: number,
-  pageY: number,
-  screenX: number,
-  screenY: number,
-  target: EventTarget,
-}
-
-// https://www.w3.org/TR/touch-events/#idl-def-TouchList
-// TouchList#item(index) will return null if n > #length. Should #item's
-// return type just been Touch?
-declare class TouchList {
-  @@iterator(): Iterator<Touch>;
-  length: number,
-  item(index: number): null | Touch,
-  [index: number]: Touch,
-}
-
-// https://www.w3.org/TR/touch-events/#touchevent-interface
-declare class TouchEvent extends UIEvent {
-  altKey: boolean,
-  changedTouches: TouchList,
-  ctrlKey: boolean,
-  metaKey: boolean,
-  shiftKey: boolean,
-  targetTouches: TouchList,
-  touches: TouchList,
-}
-
-// https://www.w3.org/TR/webstorage/#the-storageevent-interface
-declare class StorageEvent extends Event {
-  key: ?string,
-  oldValue: ?string,
-  newValue: ?string,
-  url: string,
-  storageArea: ?Storage,
-}
-
-// https://www.w3.org/TR/clipboard-apis/#typedefdef-clipboarditemdata
-// Raw string | Blob are allowed per https://webidl.spec.whatwg.org/#es-promise
-type ClipboardItemData = string | Blob | Promise<string | Blob>;
-
-type PresentationStyle = "attachment" | "inline" | "unspecified";
-
-type ClipboardItemOptions = {
-  presentationStyle?: PresentationStyle;
-  ...
-}
-
-declare class ClipboardItem {
-  +types: $ReadOnlyArray<string>;
-  getType(type: string): Promise<Blob>;
-  constructor(items: {[type: string]: ClipboardItemData}, options?: ClipboardItemOptions): void;
-}
-
-// https://w3c.github.io/clipboard-apis/ as of 15 May 2018
-type ClipboardEvent$Init = {
-  ...Event$Init,
-  clipboardData: DataTransfer | null,
-  ...
-};
-
-declare class ClipboardEvent extends Event {
-  constructor(type: ClipboardEventTypes, eventInit?: ClipboardEvent$Init): void;
-  +clipboardData: ?DataTransfer; // readonly
-}
-
-// https://www.w3.org/TR/2017/WD-css-transitions-1-20171130/#interface-transitionevent
-type TransitionEvent$Init = {
-  ...Event$Init,
-  propertyName: string,
-  elapsedTime: number,
-  pseudoElement: string,
-  ...
-};
-
-declare class TransitionEvent extends Event {
-  constructor(type: TransitionEventTypes, eventInit?: TransitionEvent$Init): void;
-
-  +propertyName: string; // readonly
-  +elapsedTime: number; // readonly
-  +pseudoElement: string; // readonly
-}
-
-// https://www.w3.org/TR/html50/browsers.html#beforeunloadevent
-declare class BeforeUnloadEvent extends Event {
-  returnValue: string,
-}
-
-declare class SecurityPolicyViolationEvent extends Event {
-  +documentURI: string;
-  +referrer: string;
-  +blockedURI: string;
-  +effectiveDirective: string;
-  +violatedDirective: string;
-  +originalPolicy: string;
-  +sourceFile: string;
-  +sample: string;
-  +disposition: "enforce" | "report";
-  +statusCode: number;
-  +lineNumber: number;
-  +columnNumber: number;
-};
-
-// https://developer.mozilla.org/en-US/docs/Web/API/USBConnectionEvent
-declare class USBConnectionEvent extends Event {
-  device: USBDevice,
-}
-
-// TODO: *Event
-
-declare class Node extends EventTarget {
-  baseURI: ?string;
-  childNodes: NodeList<Node>;
-  firstChild: ?Node;
-  +isConnected: boolean;
-  lastChild: ?Node;
-  nextSibling: ?Node;
-  nodeName: string;
-  nodeType: number;
-  nodeValue: string;
-  ownerDocument: Document;
-  parentElement: ?Element;
-  parentNode: ?Node;
-  previousSibling: ?Node;
-  rootNode: Node;
-  textContent: string;
-  appendChild<T: Node>(newChild: T): T;
-  cloneNode(deep?: boolean): this;
-  compareDocumentPosition(other: Node): number;
-  contains(other: ?Node): boolean;
-  getRootNode(options?: { composed: boolean, ... }): Node;
-  hasChildNodes(): boolean;
-  insertBefore<T: Node>(newChild: T, refChild?: ?Node): T;
-  isDefaultNamespace(namespaceURI: string): boolean;
-  isEqualNode(arg: Node): boolean;
-  isSameNode(other: Node): boolean;
-  lookupNamespaceURI(prefix: string): string;
-  lookupPrefix(namespaceURI: string): string;
-  normalize(): void;
-  removeChild<T: Node>(oldChild: T): T;
-  replaceChild<T: Node>(newChild: Node, oldChild: T): T;
-  replaceChildren(...nodes: $ReadOnlyArray<Node | string>): void;
-  static ATTRIBUTE_NODE: number;
-  static CDATA_SECTION_NODE: number;
-  static COMMENT_NODE: number;
-  static DOCUMENT_FRAGMENT_NODE: number;
-  static DOCUMENT_NODE: number;
-  static DOCUMENT_POSITION_CONTAINED_BY: number;
-  static DOCUMENT_POSITION_CONTAINS: number;
-  static DOCUMENT_POSITION_DISCONNECTED: number;
-  static DOCUMENT_POSITION_FOLLOWING: number;
-  static DOCUMENT_POSITION_IMPLEMENTATION_SPECIFIC: number;
-  static DOCUMENT_POSITION_PRECEDING: number;
-  static DOCUMENT_TYPE_NODE: number;
-  static ELEMENT_NODE: number;
-  static ENTITY_NODE: number;
-  static ENTITY_REFERENCE_NODE: number;
-  static NOTATION_NODE: number;
-  static PROCESSING_INSTRUCTION_NODE: number;
-  static TEXT_NODE: number;
-
-  // Non-standard
-  innerText?: string;
-  outerText?: string;
-}
-
-declare class NodeList<T> {
-  @@iterator(): Iterator<T>;
-  length: number;
-  item(index: number): T;
-  [index: number]: T;
-
-  forEach<This>(callbackfn: (this : This, value: T, index: number, list: NodeList<T>) => any, thisArg: This): void;
-  entries(): Iterator<[number, T]>;
-  keys(): Iterator<number>;
-  values(): Iterator<T>;
-}
-
-declare class NamedNodeMap {
-  @@iterator(): Iterator<Attr>;
-  length: number;
-  removeNamedItemNS(namespaceURI: string, localName: string): Attr;
-  item(index: number): Attr;
-  [index: number | string]: Attr;
-  removeNamedItem(name: string): Attr;
-  getNamedItem(name: string): Attr;
-  setNamedItem(arg: Attr): Attr;
-  getNamedItemNS(namespaceURI: string, localName: string): Attr;
-  setNamedItemNS(arg: Attr): Attr;
-}
-
-declare class Attr extends Node {
-  isId: boolean;
-  specified: boolean;
-  ownerElement: Element | null;
-  value: string;
-  name: string;
-  namespaceURI: string | null;
-  prefix: string | null;
-  localName: string;
-}
-
-declare class HTMLCollection<+Elem: HTMLElement> {
-  @@iterator(): Iterator<Elem>;
-  length: number;
-  item(nameOrIndex?: any, optionalIndex?: any): Elem | null;
-  namedItem(name: string): Elem | null;
-  [index: number | string]: Elem;
-}
-
-// from https://www.w3.org/TR/custom-elements/#extensions-to-document-interface-to-register
-// See also https://github.com/w3c/webcomponents/
-type ElementRegistrationOptions = {
-       +prototype?: {
-              // from https://www.w3.org/TR/custom-elements/#types-of-callbacks
-              // See also https://github.com/w3c/webcomponents/
-              +createdCallback?: () => mixed,
-              +attachedCallback?: () => mixed,
-              +detachedCallback?: () => mixed,
-              +attributeChangedCallback?:
-              // attribute is set
-              ((
-                attributeLocalName: string,
-                oldAttributeValue: null,
-                newAttributeValue: string,
-                attributeNamespace: string
-              ) => mixed) &
-              // attribute is changed
-              ((
-                attributeLocalName: string,
-                oldAttributeValue: string,
-                newAttributeValue: string,
-                attributeNamespace: string
-              ) => mixed) &
-              // attribute is removed
-              ((
-                attributeLocalName: string,
-                oldAttributeValue: string,
-                newAttributeValue: null,
-                attributeNamespace: string
-              ) => mixed),
-              ...
-       },
-       +extends?: string,
-       ...
-}
-
-type ElementCreationOptions = { is: string, ...}
-
-declare class Document extends Node {
-  +timeline: DocumentTimeline;
-  getAnimations(): Array<Animation>;
-  +URL: string;
-  adoptNode<T: Node>(source: T): T;
-  anchors: HTMLCollection<HTMLAnchorElement>;
-  applets: HTMLCollection<HTMLAppletElement>;
-  body: HTMLBodyElement | null;
-  +characterSet: string;
-  /**
-   * Legacy alias of `characterSet`
-   * @deprecated
-   */
-  +charset: string;
-  close(): void;
-  +contentType: string;
-  cookie: string;
-  createAttribute(name: string): Attr;
-  createAttributeNS(namespaceURI: string | null, qualifiedName: string): Attr;
-  createCDATASection(data: string): Text;
-  createComment(data: string): Comment;
-  createDocumentFragment(): DocumentFragment;
-  createElement(tagName: 'a', options?: ElementCreationOptions): HTMLAnchorElement;
-  createElement(tagName: 'area', options?: ElementCreationOptions): HTMLAreaElement;
-  createElement(tagName: 'audio', options?: ElementCreationOptions): HTMLAudioElement;
-  createElement(tagName: 'blockquote', options?: ElementCreationOptions): HTMLQuoteElement;
-  createElement(tagName: 'body', options?: ElementCreationOptions): HTMLBodyElement;
-  createElement(tagName: 'br', options?: ElementCreationOptions): HTMLBRElement;
-  createElement(tagName: 'button', options?: ElementCreationOptions): HTMLButtonElement;
-  createElement(tagName: 'canvas', options?: ElementCreationOptions): HTMLCanvasElement;
-  createElement(tagName: 'col', options?: ElementCreationOptions): HTMLTableColElement;
-  createElement(tagName: 'colgroup', options?: ElementCreationOptions): HTMLTableColElement;
-  createElement(tagName: 'data', options?: ElementCreationOptions): HTMLDataElement;
-  createElement(tagName: 'datalist', options?: ElementCreationOptions): HTMLDataListElement;
-  createElement(tagName: 'del', options?: ElementCreationOptions): HTMLModElement;
-  createElement(tagName: 'details', options?: ElementCreationOptions): HTMLDetailsElement;
-  createElement(tagName: 'dialog', options?: ElementCreationOptions): HTMLDialogElement;
-  createElement(tagName: 'div', options?: ElementCreationOptions): HTMLDivElement;
-  createElement(tagName: 'dl', options?: ElementCreationOptions): HTMLDListElement;
-  createElement(tagName: 'embed', options?: ElementCreationOptions): HTMLEmbedElement;
-  createElement(tagName: 'fieldset', options?: ElementCreationOptions): HTMLFieldSetElement;
-  createElement(tagName: 'form', options?: ElementCreationOptions): HTMLFormElement;
-  createElement(tagName: 'h1' | 'h2' | 'h3' | 'h4' | 'h5' | 'h6', options?: ElementCreationOptions): HTMLHeadingElement;
-  createElement(tagName: 'head', options?: ElementCreationOptions): HTMLHeadElement;
-  createElement(tagName: 'hr', options?: ElementCreationOptions): HTMLHRElement;
-  createElement(tagName: 'html', options?: ElementCreationOptions): HTMLHtmlElement;
-  createElement(tagName: 'iframe', options?: ElementCreationOptions): HTMLIFrameElement;
-  createElement(tagName: 'img', options?: ElementCreationOptions): HTMLImageElement;
-  createElement(tagName: 'input', options?: ElementCreationOptions): HTMLInputElement;
-  createElement(tagName: 'ins', options?: ElementCreationOptions): HTMLModElement;
-  createElement(tagName: 'label', options?: ElementCreationOptions): HTMLLabelElement;
-  createElement(tagName: 'legend', options?: ElementCreationOptions): HTMLLegendElement;
-  createElement(tagName: 'li', options?: ElementCreationOptions): HTMLLIElement;
-  createElement(tagName: 'link', options?: ElementCreationOptions): HTMLLinkElement;
-  createElement(tagName: 'map', options?: ElementCreationOptions): HTMLMapElement;
-  createElement(tagName: 'meta', options?: ElementCreationOptions): HTMLMetaElement;
-  createElement(tagName: 'meter', options?: ElementCreationOptions): HTMLMeterElement;
-  createElement(tagName: 'object', options?: ElementCreationOptions): HTMLObjectElement;
-  createElement(tagName: 'ol', options?: ElementCreationOptions): HTMLOListElement;
-  createElement(tagName: 'optgroup', options?: ElementCreationOptions): HTMLOptGroupElement;
-  createElement(tagName: 'option', options?: ElementCreationOptions): HTMLOptionElement;
-  createElement(tagName: 'p', options?: ElementCreationOptions): HTMLParagraphElement;
-  createElement(tagName: 'param', options?: ElementCreationOptions): HTMLParamElement;
-  createElement(tagName: 'picture', options?: ElementCreationOptions): HTMLPictureElement;
-  createElement(tagName: 'pre', options?: ElementCreationOptions): HTMLPreElement;
-  createElement(tagName: 'progress', options?: ElementCreationOptions): HTMLProgressElement;
-  createElement(tagName: 'q', options?: ElementCreationOptions): HTMLQuoteElement;
-  createElement(tagName: 'script', options?: ElementCreationOptions): HTMLScriptElement;
-  createElement(tagName: 'select', options?: ElementCreationOptions): HTMLSelectElement;
-  createElement(tagName: 'source', options?: ElementCreationOptions): HTMLSourceElement;
-  createElement(tagName: 'span', options?: ElementCreationOptions): HTMLSpanElement;
-  createElement(tagName: 'style', options?: ElementCreationOptions): HTMLStyleElement;
-  createElement(tagName: 'textarea', options?: ElementCreationOptions): HTMLTextAreaElement;
-  createElement(tagName: 'time', options?: ElementCreationOptions): HTMLTimeElement;
-  createElement(tagName: 'title', options?: ElementCreationOptions): HTMLTitleElement;
-  createElement(tagName: 'track', options?: ElementCreationOptions): HTMLTrackElement;
-  createElement(tagName: 'video', options?: ElementCreationOptions): HTMLVideoElement;
-  createElement(tagName: 'table', options?: ElementCreationOptions): HTMLTableElement;
-  createElement(tagName: 'caption', options?: ElementCreationOptions): HTMLTableCaptionElement;
-  createElement(tagName: 'thead' | 'tfoot' | 'tbody', options?: ElementCreationOptions): HTMLTableSectionElement;
-  createElement(tagName: 'tr', options?: ElementCreationOptions): HTMLTableRowElement;
-  createElement(tagName: 'td' | 'th', options?: ElementCreationOptions): HTMLTableCellElement;
-  createElement(tagName: 'template', options?: ElementCreationOptions): HTMLTemplateElement;
-  createElement(tagName: 'ul', options?: ElementCreationOptions): HTMLUListElement;
-  createElement(tagName: string, options?: ElementCreationOptions): HTMLElement;
-  createElementNS(namespaceURI: string | null, qualifiedName: string, options?: ElementCreationOptions): Element;
-  createTextNode(data: string): Text;
-  currentScript: HTMLScriptElement | null;
-  dir: 'rtl' | 'ltr';
-  +doctype: DocumentType | null;
-  +documentElement: HTMLElement | null;
-  documentMode: number;
-  +documentURI: string;
-  domain: string | null;
-  embeds: HTMLCollection<HTMLEmbedElement>;
-  exitFullscreen(): Promise<void>,
-  queryCommandSupported(cmdID: string): boolean;
-  execCommand(cmdID: string, showUI?: boolean, value?: any): boolean;
-  forms: HTMLCollection<HTMLFormElement>;
-  fullscreenElement: Element | null;
-  fullscreenEnabled: boolean;
-  getElementsByClassName(classNames: string): HTMLCollection<HTMLElement>;
-  getElementsByName(elementName: string): HTMLCollection<HTMLElement>;
-  getElementsByTagName(name: 'a'): HTMLCollection<HTMLAnchorElement>;
-  getElementsByTagName(name: 'area'): HTMLCollection<HTMLAreaElement>;
-  getElementsByTagName(name: 'audio'): HTMLCollection<HTMLAudioElement>;
-  getElementsByTagName(name: 'blockquote'): HTMLCollection<HTMLQuoteElement>;
-  getElementsByTagName(name: 'body'): HTMLCollection<HTMLBodyElement>;
-  getElementsByTagName(name: 'br'): HTMLCollection<HTMLBRElement>;
-  getElementsByTagName(name: 'button'): HTMLCollection<HTMLButtonElement>;
-  getElementsByTagName(name: 'canvas'): HTMLCollection<HTMLCanvasElement>;
-  getElementsByTagName(name: 'col'): HTMLCollection<HTMLTableColElement>;
-  getElementsByTagName(name: 'colgroup'): HTMLCollection<HTMLTableColElement>;
-  getElementsByTagName(name: 'data'): HTMLCollection<HTMLDataElement>;
-  getElementsByTagName(name: 'datalist'): HTMLCollection<HTMLDataListElement>;
-  getElementsByTagName(name: 'del'): HTMLCollection<HTMLModElement>;
-  getElementsByTagName(name: 'details'): HTMLCollection<HTMLDetailsElement>;
-  getElementsByTagName(name: 'dialog'): HTMLCollection<HTMLDialogElement>;
-  getElementsByTagName(name: 'div'): HTMLCollection<HTMLDivElement>;
-  getElementsByTagName(name: 'dl'): HTMLCollection<HTMLDListElement>;
-  getElementsByTagName(name: 'embed'): HTMLCollection<HTMLEmbedElement>;
-  getElementsByTagName(name: 'fieldset'): HTMLCollection<HTMLFieldSetElement>;
-  getElementsByTagName(name: 'form'): HTMLCollection<HTMLFormElement>;
-  getElementsByTagName(name: 'h1' | 'h2' | 'h3' | 'h4' | 'h5' | 'h6'): HTMLCollection<HTMLHeadingElement>;
-  getElementsByTagName(name: 'head'): HTMLCollection<HTMLHeadElement>;
-  getElementsByTagName(name: 'hr'): HTMLCollection<HTMLHRElement>;
-  getElementsByTagName(name: 'html'): HTMLCollection<HTMLHtmlElement>;
-  getElementsByTagName(name: 'iframe'): HTMLCollection<HTMLIFrameElement>;
-  getElementsByTagName(name: 'img'): HTMLCollection<HTMLImageElement>;
-  getElementsByTagName(name: 'input'): HTMLCollection<HTMLInputElement>;
-  getElementsByTagName(name: 'ins'): HTMLCollection<HTMLModElement>;
-  getElementsByTagName(name: 'label'): HTMLCollection<HTMLLabelElement>;
-  getElementsByTagName(name: 'legend'): HTMLCollection<HTMLLegendElement>;
-  getElementsByTagName(name: 'li'): HTMLCollection<HTMLLIElement>;
-  getElementsByTagName(name: 'link'): HTMLCollection<HTMLLinkElement>;
-  getElementsByTagName(name: 'map'): HTMLCollection<HTMLMapElement>;
-  getElementsByTagName(name: 'meta'): HTMLCollection<HTMLMetaElement>;
-  getElementsByTagName(name: 'meter'): HTMLCollection<HTMLMeterElement>;
-  getElementsByTagName(name: 'object'): HTMLCollection<HTMLObjectElement>;
-  getElementsByTagName(name: 'ol'): HTMLCollection<HTMLOListElement>;
-  getElementsByTagName(name: 'option'): HTMLCollection<HTMLOptionElement>;
-  getElementsByTagName(name: 'optgroup'): HTMLCollection<HTMLOptGroupElement>;
-  getElementsByTagName(name: 'p'): HTMLCollection<HTMLParagraphElement>;
-  getElementsByTagName(name: 'param'): HTMLCollection<HTMLParamElement>;
-  getElementsByTagName(name: 'picture'): HTMLCollection<HTMLPictureElement>;
-  getElementsByTagName(name: 'pre'): HTMLCollection<HTMLPreElement>;
-  getElementsByTagName(name: 'progress'): HTMLCollection<HTMLProgressElement>;
-  getElementsByTagName(name: 'q'): HTMLCollection<HTMLQuoteElement>;
-  getElementsByTagName(name: 'script'): HTMLCollection<HTMLScriptElement>;
-  getElementsByTagName(name: 'select'): HTMLCollection<HTMLSelectElement>;
-  getElementsByTagName(name: 'source'): HTMLCollection<HTMLSourceElement>;
-  getElementsByTagName(name: 'span'): HTMLCollection<HTMLSpanElement>;
-  getElementsByTagName(name: 'style'): HTMLCollection<HTMLStyleElement>;
-  getElementsByTagName(name: 'textarea'): HTMLCollection<HTMLTextAreaElement>;
-  getElementsByTagName(name: 'time'): HTMLCollection<HTMLTimeElement>;
-  getElementsByTagName(name: 'title'): HTMLCollection<HTMLTitleElement>;
-  getElementsByTagName(name: 'track'): HTMLCollection<HTMLTrackElement>;
-  getElementsByTagName(name: 'video'): HTMLCollection<HTMLVideoElement>;
-  getElementsByTagName(name: 'table'): HTMLCollection<HTMLTableElement>;
-  getElementsByTagName(name: 'caption'): HTMLCollection<HTMLTableCaptionElement>;
-  getElementsByTagName(name: 'thead' | 'tfoot' | 'tbody'): HTMLCollection<HTMLTableSectionElement>;
-  getElementsByTagName(name: 'tr'): HTMLCollection<HTMLTableRowElement>;
-  getElementsByTagName(name: 'td' | 'th'): HTMLCollection<HTMLTableCellElement>;
-  getElementsByTagName(name: 'template'): HTMLCollection<HTMLTemplateElement>;
-  getElementsByTagName(name: 'ul'): HTMLCollection<HTMLUListElement>;
-  getElementsByTagName(name: string): HTMLCollection<HTMLElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'a'): HTMLCollection<HTMLAnchorElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'area'): HTMLCollection<HTMLAreaElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'audio'): HTMLCollection<HTMLAudioElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'blockquote'): HTMLCollection<HTMLQuoteElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'body'): HTMLCollection<HTMLBodyElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'br'): HTMLCollection<HTMLBRElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'button'): HTMLCollection<HTMLButtonElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'canvas'): HTMLCollection<HTMLCanvasElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'col'): HTMLCollection<HTMLTableColElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'colgroup'): HTMLCollection<HTMLTableColElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'data'): HTMLCollection<HTMLDataElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'datalist'): HTMLCollection<HTMLDataListElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'del'): HTMLCollection<HTMLModElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'details'): HTMLCollection<HTMLDetailsElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'dialog'): HTMLCollection<HTMLDialogElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'div'): HTMLCollection<HTMLDivElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'dl'): HTMLCollection<HTMLDListElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'embed'): HTMLCollection<HTMLEmbedElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'fieldset'): HTMLCollection<HTMLFieldSetElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'form'): HTMLCollection<HTMLFormElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'h1' | 'h2' | 'h3' | 'h4' | 'h5' | 'h6'): HTMLCollection<HTMLHeadingElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'head'): HTMLCollection<HTMLHeadElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'hr'): HTMLCollection<HTMLHRElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'html'): HTMLCollection<HTMLHtmlElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'iframe'): HTMLCollection<HTMLIFrameElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'img'): HTMLCollection<HTMLImageElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'input'): HTMLCollection<HTMLInputElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'ins'): HTMLCollection<HTMLModElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'label'): HTMLCollection<HTMLLabelElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'legend'): HTMLCollection<HTMLLegendElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'li'): HTMLCollection<HTMLLIElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'link'): HTMLCollection<HTMLLinkElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'map'): HTMLCollection<HTMLMapElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'meta'): HTMLCollection<HTMLMetaElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'meter'): HTMLCollection<HTMLMeterElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'object'): HTMLCollection<HTMLObjectElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'ol'): HTMLCollection<HTMLOListElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'option'): HTMLCollection<HTMLOptionElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'optgroup'): HTMLCollection<HTMLOptGroupElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'p'): HTMLCollection<HTMLParagraphElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'param'): HTMLCollection<HTMLParamElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'picture'): HTMLCollection<HTMLPictureElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'pre'): HTMLCollection<HTMLPreElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'progress'): HTMLCollection<HTMLProgressElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'q'): HTMLCollection<HTMLQuoteElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'script'): HTMLCollection<HTMLScriptElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'select'): HTMLCollection<HTMLSelectElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'source'): HTMLCollection<HTMLSourceElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'span'): HTMLCollection<HTMLSpanElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'style'): HTMLCollection<HTMLStyleElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'textarea'): HTMLCollection<HTMLTextAreaElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'time'): HTMLCollection<HTMLTimeElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'title'): HTMLCollection<HTMLTitleElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'track'): HTMLCollection<HTMLTrackElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'video'): HTMLCollection<HTMLVideoElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'table'): HTMLCollection<HTMLTableElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'caption'): HTMLCollection<HTMLTableCaptionElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'thead' | 'tfoot' | 'tbody'): HTMLCollection<HTMLTableSectionElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'tr'): HTMLCollection<HTMLTableRowElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'td' | 'th'): HTMLCollection<HTMLTableCellElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'template'): HTMLCollection<HTMLTemplateElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'ul'): HTMLCollection<HTMLUListElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: string): HTMLCollection<HTMLElement>;
-  head: HTMLHeadElement | null;
-  images: HTMLCollection<HTMLImageElement>;
-  +implementation: DOMImplementation;
-  importNode<T: Node>(importedNode: T, deep: boolean): T;
-  /**
-   * Legacy alias of `characterSet`
-   * @deprecated
-   */
-  +inputEncoding: string;
-  lastModified: string;
-  links: HTMLCollection<HTMLLinkElement>;
-  media: string;
-  open(url?: string, name?: string, features?: string, replace?: boolean): any;
-  readyState: string;
-  referrer: string;
-  scripts: HTMLCollection<HTMLScriptElement>;
-  scrollingElement: HTMLElement | null;
-  title: string;
-  visibilityState: 'visible' | 'hidden' | 'prerender' | 'unloaded';
-  write(...content: Array<string | TrustedHTML>): void;
-  writeln(...content: Array<string | TrustedHTML>): void;
-  xmlEncoding: string;
-  xmlStandalone: boolean;
-  xmlVersion: string;
-
-  registerElement(type: string, options?: ElementRegistrationOptions): any;
-  getSelection(): Selection | null;
-
-  // 6.4.6 Focus management APIs
-  activeElement: HTMLElement | null;
-  hasFocus(): boolean;
-
-  // extension
-  location: Location;
-  createEvent(eventInterface: 'CustomEvent'): CustomEvent;
-  createEvent(eventInterface: string): Event;
-  createRange(): Range;
-  elementFromPoint(x: number, y: number): HTMLElement | null;
-  elementsFromPoint(x: number, y: number): Array<HTMLElement>;
-  defaultView: any;
-  +compatMode: 'BackCompat' | 'CSS1Compat';
-  hidden: boolean;
-
-  // Pointer Lock specification
-  exitPointerLock(): void;
-  pointerLockElement: Element | null;
-
-  // from ParentNode interface
-  childElementCount: number;
-  children: HTMLCollection<HTMLElement>;
-  firstElementChild: ?Element;
-  lastElementChild: ?Element;
-  append(...nodes: Array<string | Node>): void;
-  prepend(...nodes: Array<string | Node>): void;
-
-  querySelector(selector: 'a'): HTMLAnchorElement | null;
-  querySelector(selector: 'area'): HTMLAreaElement | null;
-  querySelector(selector: 'audio'): HTMLAudioElement | null;
-  querySelector(selector: 'blockquote'): HTMLQuoteElement | null;
-  querySelector(selector: 'body'): HTMLBodyElement | null;
-  querySelector(selector: 'br'): HTMLBRElement | null;
-  querySelector(selector: 'button'): HTMLButtonElement | null;
-  querySelector(selector: 'canvas'): HTMLCanvasElement | null;
-  querySelector(selector: 'col'): HTMLTableColElement | null;
-  querySelector(selector: 'colgroup'): HTMLTableColElement | null;
-  querySelector(selector: 'data'): HTMLDataElement | null;
-  querySelector(selector: 'datalist'): HTMLDataListElement | null;
-  querySelector(selector: 'del'): HTMLModElement | null;
-  querySelector(selector: 'details'): HTMLDetailsElement | null;
-  querySelector(selector: 'dialog'): HTMLDialogElement | null;
-  querySelector(selector: 'div'): HTMLDivElement | null;
-  querySelector(selector: 'dl'): HTMLDListElement | null;
-  querySelector(selector: 'embed'): HTMLEmbedElement | null;
-  querySelector(selector: 'fieldset'): HTMLFieldSetElement | null;
-  querySelector(selector: 'form'): HTMLFormElement | null;
-  querySelector(selector: 'h1' | 'h2' | 'h3' | 'h4' | 'h5' | 'h6'): HTMLHeadingElement;
-  querySelector(selector: 'head'): HTMLHeadElement | null;
-  querySelector(selector: 'hr'): HTMLHRElement | null;
-  querySelector(selector: 'html'): HTMLHtmlElement | null;
-  querySelector(selector: 'iframe'): HTMLIFrameElement | null;
-  querySelector(selector: 'img'): HTMLImageElement | null;
-  querySelector(selector: 'ins'): HTMLModElement | null;
-  querySelector(selector: 'input'): HTMLInputElement | null;
-  querySelector(selector: 'label'): HTMLLabelElement | null;
-  querySelector(selector: 'legend'): HTMLLegendElement | null;
-  querySelector(selector: 'li'): HTMLLIElement | null;
-  querySelector(selector: 'link'): HTMLLinkElement | null;
-  querySelector(selector: 'map'): HTMLMapElement | null;
-  querySelector(selector: 'meta'): HTMLMetaElement | null;
-  querySelector(selector: 'meter'): HTMLMeterElement | null;
-  querySelector(selector: 'object'): HTMLObjectElement | null;
-  querySelector(selector: 'ol'): HTMLOListElement | null;
-  querySelector(selector: 'option'): HTMLOptionElement | null;
-  querySelector(selector: 'optgroup'): HTMLOptGroupElement | null;
-  querySelector(selector: 'p'): HTMLParagraphElement | null;
-  querySelector(selector: 'param'): HTMLParamElement | null;
-  querySelector(selector: 'picture'): HTMLPictureElement | null;
-  querySelector(selector: 'pre'): HTMLPreElement | null;
-  querySelector(selector: 'progress'): HTMLProgressElement | null;
-  querySelector(selector: 'q'): HTMLQuoteElement | null;
-  querySelector(selector: 'script'): HTMLScriptElement | null;
-  querySelector(selector: 'select'): HTMLSelectElement | null;
-  querySelector(selector: 'source'): HTMLSourceElement | null;
-  querySelector(selector: 'span'): HTMLSpanElement | null;
-  querySelector(selector: 'style'): HTMLStyleElement | null;
-  querySelector(selector: 'textarea'): HTMLTextAreaElement | null;
-  querySelector(selector: 'time'): HTMLTimeElement | null;
-  querySelector(selector: 'title'): HTMLTitleElement | null;
-  querySelector(selector: 'track'): HTMLTrackElement | null;
-  querySelector(selector: 'video'): HTMLVideoElement | null;
-  querySelector(selector: 'table'): HTMLTableElement | null;
-  querySelector(selector: 'caption'): HTMLTableCaptionElement | null;
-  querySelector(selector: 'thead' | 'tfoot' | 'tbody'): HTMLTableSectionElement | null;
-  querySelector(selector: 'tr'): HTMLTableRowElement | null;
-  querySelector(selector: 'td' | 'th'): HTMLTableCellElement | null;
-  querySelector(selector: 'template'): HTMLTemplateElement | null;
-  querySelector(selector: 'ul'): HTMLUListElement | null;
-  querySelector(selector: string): HTMLElement | null;
-
-  querySelectorAll(selector: 'a'): NodeList<HTMLAnchorElement>;
-  querySelectorAll(selector: 'area'): NodeList<HTMLAreaElement>;
-  querySelectorAll(selector: 'audio'): NodeList<HTMLAudioElement>;
-  querySelectorAll(selector: 'blockquote'): NodeList<HTMLQuoteElement>;
-  querySelectorAll(selector: 'body'): NodeList<HTMLBodyElement>;
-  querySelectorAll(selector: 'br'): NodeList<HTMLBRElement>;
-  querySelectorAll(selector: 'button'): NodeList<HTMLButtonElement>;
-  querySelectorAll(selector: 'canvas'): NodeList<HTMLCanvasElement>;
-  querySelectorAll(selector: 'col'): NodeList<HTMLTableColElement>;
-  querySelectorAll(selector: 'colgroup'): NodeList<HTMLTableColElement>;
-  querySelectorAll(selector: 'data'): NodeList<HTMLDataElement>;
-  querySelectorAll(selector: 'datalist'): NodeList<HTMLDataListElement>;
-  querySelectorAll(selector: 'del'): NodeList<HTMLModElement>;
-  querySelectorAll(selector: 'details'): NodeList<HTMLDetailsElement>;
-  querySelectorAll(selector: 'dialog'): NodeList<HTMLDialogElement>;
-  querySelectorAll(selector: 'div'): NodeList<HTMLDivElement>;
-  querySelectorAll(selector: 'dl'): NodeList<HTMLDListElement>;
-  querySelectorAll(selector: 'embed'): NodeList<HTMLEmbedElement>;
-  querySelectorAll(selector: 'fieldset'): NodeList<HTMLFieldSetElement>;
-  querySelectorAll(selector: 'form'): NodeList<HTMLFormElement>;
-  querySelectorAll(selector: 'h1' | 'h2' | 'h3' | 'h4' | 'h5' | 'h6'): NodeList<HTMLHeadingElement>;
-  querySelectorAll(selector: 'head'): NodeList<HTMLHeadElement>;
-  querySelectorAll(selector: 'hr'): NodeList<HTMLHRElement>;
-  querySelectorAll(selector: 'html'): NodeList<HTMLHtmlElement>;
-  querySelectorAll(selector: 'iframe'): NodeList<HTMLIFrameElement>;
-  querySelectorAll(selector: 'img'): NodeList<HTMLImageElement>;
-  querySelectorAll(selector: 'input'): NodeList<HTMLInputElement>;
-  querySelectorAll(selector: 'ins'): NodeList<HTMLModElement>;
-  querySelectorAll(selector: 'label'): NodeList<HTMLLabelElement>;
-  querySelectorAll(selector: 'legend'): NodeList<HTMLLegendElement>;
-  querySelectorAll(selector: 'li'): NodeList<HTMLLIElement>;
-  querySelectorAll(selector: 'link'): NodeList<HTMLLinkElement>;
-  querySelectorAll(selector: 'map'): NodeList<HTMLMapElement>;
-  querySelectorAll(selector: 'meta'): NodeList<HTMLMetaElement>;
-  querySelectorAll(selector: 'meter'): NodeList<HTMLMeterElement>;
-  querySelectorAll(selector: 'object'): NodeList<HTMLObjectElement>;
-  querySelectorAll(selector: 'ol'): NodeList<HTMLOListElement>;
-  querySelectorAll(selector: 'option'): NodeList<HTMLOptionElement>;
-  querySelectorAll(selector: 'optgroup'): NodeList<HTMLOptGroupElement>;
-  querySelectorAll(selector: 'p'): NodeList<HTMLParagraphElement>;
-  querySelectorAll(selector: 'param'): NodeList<HTMLParamElement>;
-  querySelectorAll(selector: 'picture'): NodeList<HTMLPictureElement>;
-  querySelectorAll(selector: 'pre'): NodeList<HTMLPreElement>;
-  querySelectorAll(selector: 'progress'): NodeList<HTMLProgressElement>;
-  querySelectorAll(selector: 'q'): NodeList<HTMLQuoteElement>;
-  querySelectorAll(selector: 'script'): NodeList<HTMLScriptElement>;
-  querySelectorAll(selector: 'select'): NodeList<HTMLSelectElement>;
-  querySelectorAll(selector: 'source'): NodeList<HTMLSourceElement>;
-  querySelectorAll(selector: 'span'): NodeList<HTMLSpanElement>;
-  querySelectorAll(selector: 'style'): NodeList<HTMLStyleElement>;
-  querySelectorAll(selector: 'textarea'): NodeList<HTMLTextAreaElement>;
-  querySelectorAll(selector: 'time'): NodeList<HTMLTimeElement>;
-  querySelectorAll(selector: 'title'): NodeList<HTMLTitleElement>;
-  querySelectorAll(selector: 'track'): NodeList<HTMLTrackElement>;
-  querySelectorAll(selector: 'video'): NodeList<HTMLVideoElement>;
-  querySelectorAll(selector: 'table'): NodeList<HTMLTableElement>;
-  querySelectorAll(selector: 'caption'): NodeList<HTMLTableCaptionElement>;
-  querySelectorAll(selector: 'thead' | 'tfoot' | 'tbody'): NodeList<HTMLTableSectionElement>;
-  querySelectorAll(selector: 'tr'): NodeList<HTMLTableRowElement>;
-  querySelectorAll(selector: 'td' | 'th'): NodeList<HTMLTableCellElement>;
-  querySelectorAll(selector: 'template'): NodeList<HTMLTemplateElement>;
-  querySelectorAll(selector: 'ul'): NodeList<HTMLUListElement>;
-  querySelectorAll(selector: string): NodeList<HTMLElement>;
-
-  // Interface DocumentTraversal
-  // http://www.w3.org/TR/2000/REC-DOM-Level-2-Traversal-Range-20001113/traversal.html#Traversal-Document
-
-  // Not all combinations of RootNodeT and whatToShow are logically possible.
-  // The bitmasks NodeFilter.SHOW_CDATA_SECTION,
-  // NodeFilter.SHOW_ENTITY_REFERENCE, NodeFilter.SHOW_ENTITY, and
-  // NodeFilter.SHOW_NOTATION are deprecated and do not correspond to types
-  // that Flow knows about.
-
-  // NodeFilter.SHOW_ATTRIBUTE is also deprecated, but corresponds to the
-  // type Attr. While there is no reason to prefer it to Node.attributes,
-  // it does have meaning and can be typed: When (whatToShow &
-  // NodeFilter.SHOW_ATTRIBUTE === 1), RootNodeT must be Attr, and when
-  // RootNodeT is Attr, bitmasks other than NodeFilter.SHOW_ATTRIBUTE are
-  // meaningless.
-  createNodeIterator<RootNodeT: Attr>(root: RootNodeT, whatToShow: 2, filter?: NodeFilterInterface): NodeIterator<RootNodeT, Attr>;
-  createTreeWalker<RootNodeT: Attr>(root: RootNodeT, whatToShow: 2, filter?: NodeFilterInterface, entityReferenceExpansion?: boolean): TreeWalker<RootNodeT, Attr>;
-
-  // NodeFilter.SHOW_PROCESSING_INSTRUCTION is not implemented because Flow
-  // does not currently define a ProcessingInstruction class.
-
-  // When (whatToShow & NodeFilter.SHOW_DOCUMENT === 1 || whatToShow &
-  // NodeFilter.SHOW_DOCUMENT_TYPE === 1), RootNodeT must be Document.
-  createNodeIterator<RootNodeT: Document>(root: RootNodeT, whatToShow: 256, filter?: NodeFilterInterface): NodeIterator<RootNodeT, Document>;
-  createNodeIterator<RootNodeT: Document>(root: RootNodeT, whatToShow: 257, filter?: NodeFilterInterface): NodeIterator<RootNodeT, Document|Element>;
-  createNodeIterator<RootNodeT: Document>(root: RootNodeT, whatToShow: 260, filter?: NodeFilterInterface): NodeIterator<RootNodeT, Document|Text>;
-  createNodeIterator<RootNodeT: Document>(root: RootNodeT, whatToShow: 261, filter?: NodeFilterInterface): NodeIterator<RootNodeT, Document|Element|Text>;
-  createNodeIterator<RootNodeT: Document>(root: RootNodeT, whatToShow: 384, filter?: NodeFilterInterface): NodeIterator<RootNodeT, Document|Comment>;
-  createNodeIterator<RootNodeT: Document>(root: RootNodeT, whatToShow: 385, filter?: NodeFilterInterface): NodeIterator<RootNodeT, Document|Element|Comment>;
-  createNodeIterator<RootNodeT: Document>(root: RootNodeT, whatToShow: 388, filter?: NodeFilterInterface): NodeIterator<RootNodeT, Document|Text|Comment>;
-  createNodeIterator<RootNodeT: Document>(root: RootNodeT, whatToShow: 389, filter?: NodeFilterInterface): NodeIterator<RootNodeT, Document|Element|Text|Comment>;
-  createNodeIterator<RootNodeT: Document>(root: RootNodeT, whatToShow: 512, filter?: NodeFilterInterface): NodeIterator<RootNodeT, DocumentType>;
-  createNodeIterator<RootNodeT: Document>(root: RootNodeT, whatToShow: 513, filter?: NodeFilterInterface): NodeIterator<RootNodeT, DocumentType|Element>;
-  createNodeIterator<RootNodeT: Document>(root: RootNodeT, whatToShow: 516, filter?: NodeFilterInterface): NodeIterator<RootNodeT, DocumentType|Text>;
-  createNodeIterator<RootNodeT: Document>(root: RootNodeT, whatToShow: 517, filter?: NodeFilterInterface): NodeIterator<RootNodeT, DocumentType|Element|Text>;
-  createNodeIterator<RootNodeT: Document>(root: RootNodeT, whatToShow: 640, filter?: NodeFilterInterface): NodeIterator<RootNodeT, DocumentType|Comment>;
-  createNodeIterator<RootNodeT: Document>(root: RootNodeT, whatToShow: 641, filter?: NodeFilterInterface): NodeIterator<RootNodeT, DocumentType|Element|Comment>;
-  createNodeIterator<RootNodeT: Document>(root: RootNodeT, whatToShow: 644, filter?: NodeFilterInterface): NodeIterator<RootNodeT, DocumentType|Text|Comment>;
-  createNodeIterator<RootNodeT: Document>(root: RootNodeT, whatToShow: 645, filter?: NodeFilterInterface): NodeIterator<RootNodeT, DocumentType|Element|Text|Comment>;
-  createNodeIterator<RootNodeT: Document>(root: RootNodeT, whatToShow: 768, filter?: NodeFilterInterface): NodeIterator<RootNodeT, DocumentType|Document>;
-  createNodeIterator<RootNodeT: Document>(root: RootNodeT, whatToShow: 769, filter?: NodeFilterInterface): NodeIterator<RootNodeT, DocumentType|Document|Element>;
-  createNodeIterator<RootNodeT: Document>(root: RootNodeT, whatToShow: 772, filter?: NodeFilterInterface): NodeIterator<RootNodeT, DocumentType|Document|Text>;
-  createNodeIterator<RootNodeT: Document>(root: RootNodeT, whatToShow: 773, filter?: NodeFilterInterface): NodeIterator<RootNodeT, DocumentType|Document|Element|Text>;
-  createNodeIterator<RootNodeT: Document>(root: RootNodeT, whatToShow: 896, filter?: NodeFilterInterface): NodeIterator<RootNodeT, DocumentType|Document|Comment>;
-  createNodeIterator<RootNodeT: Document>(root: RootNodeT, whatToShow: 897, filter?: NodeFilterInterface): NodeIterator<RootNodeT, DocumentType|Document|Element|Comment>;
-  createNodeIterator<RootNodeT: Document>(root: RootNodeT, whatToShow: 900, filter?: NodeFilterInterface): NodeIterator<RootNodeT, DocumentType|Document|Text|Comment>;
-  createNodeIterator<RootNodeT: Document>(root: RootNodeT, whatToShow: 901, filter?: NodeFilterInterface): NodeIterator<RootNodeT, DocumentType|Document|Element|Text|Comment>;
-  createTreeWalker<RootNodeT: Document>(root: RootNodeT, whatToShow: 256, filter?: NodeFilterInterface, entityReferenceExpansion?: boolean): TreeWalker<RootNodeT, Document>;
-  createTreeWalker<RootNodeT: Document>(root: RootNodeT, whatToShow: 257, filter?: NodeFilterInterface, entityReferenceExpansion?: boolean): TreeWalker<RootNodeT, Document|Element>;
-  createTreeWalker<RootNodeT: Document>(root: RootNodeT, whatToShow: 260, filter?: NodeFilterInterface, entityReferenceExpansion?: boolean): TreeWalker<RootNodeT, Document|Text>;
-  createTreeWalker<RootNodeT: Document>(root: RootNodeT, whatToShow: 261, filter?: NodeFilterInterface, entityReferenceExpansion?: boolean): TreeWalker<RootNodeT, Document|Element|Text>;
-  createTreeWalker<RootNodeT: Document>(root: RootNodeT, whatToShow: 384, filter?: NodeFilterInterface, entityReferenceExpansion?: boolean): TreeWalker<RootNodeT, Document|Comment>;
-  createTreeWalker<RootNodeT: Document>(root: RootNodeT, whatToShow: 385, filter?: NodeFilterInterface, entityReferenceExpansion?: boolean): TreeWalker<RootNodeT, Document|Element|Comment>;
-  createTreeWalker<RootNodeT: Document>(root: RootNodeT, whatToShow: 388, filter?: NodeFilterInterface, entityReferenceExpansion?: boolean): TreeWalker<RootNodeT, Document|Text|Comment>;
-  createTreeWalker<RootNodeT: Document>(root: RootNodeT, whatToShow: 389, filter?: NodeFilterInterface, entityReferenceExpansion?: boolean): TreeWalker<RootNodeT, Document|Element|Text|Comment>;
-  createTreeWalker<RootNodeT: Document>(root: RootNodeT, whatToShow: 512, filter?: NodeFilterInterface, entityReferenceExpansion?: boolean): TreeWalker<RootNodeT, DocumentType>;
-  createTreeWalker<RootNodeT: Document>(root: RootNodeT, whatToShow: 513, filter?: NodeFilterInterface, entityReferenceExpansion?: boolean): TreeWalker<RootNodeT, DocumentType|Element>;
-  createTreeWalker<RootNodeT: Document>(root: RootNodeT, whatToShow: 516, filter?: NodeFilterInterface, entityReferenceExpansion?: boolean): TreeWalker<RootNodeT, DocumentType|Text>;
-  createTreeWalker<RootNodeT: Document>(root: RootNodeT, whatToShow: 517, filter?: NodeFilterInterface, entityReferenceExpansion?: boolean): TreeWalker<RootNodeT, DocumentType|Element|Text>;
-  createTreeWalker<RootNodeT: Document>(root: RootNodeT, whatToShow: 640, filter?: NodeFilterInterface, entityReferenceExpansion?: boolean): TreeWalker<RootNodeT, DocumentType|Comment>;
-  createTreeWalker<RootNodeT: Document>(root: RootNodeT, whatToShow: 641, filter?: NodeFilterInterface, entityReferenceExpansion?: boolean): TreeWalker<RootNodeT, DocumentType|Element|Comment>;
-  createTreeWalker<RootNodeT: Document>(root: RootNodeT, whatToShow: 644, filter?: NodeFilterInterface, entityReferenceExpansion?: boolean): TreeWalker<RootNodeT, DocumentType|Text|Comment>;
-  createTreeWalker<RootNodeT: Document>(root: RootNodeT, whatToShow: 645, filter?: NodeFilterInterface, entityReferenceExpansion?: boolean): TreeWalker<RootNodeT, DocumentType|Element|Text|Comment>;
-  createTreeWalker<RootNodeT: Document>(root: RootNodeT, whatToShow: 768, filter?: NodeFilterInterface, entityReferenceExpansion?: boolean): TreeWalker<RootNodeT, DocumentType|Document>;
-  createTreeWalker<RootNodeT: Document>(root: RootNodeT, whatToShow: 769, filter?: NodeFilterInterface, entityReferenceExpansion?: boolean): TreeWalker<RootNodeT, DocumentType|Document|Element>;
-  createTreeWalker<RootNodeT: Document>(root: RootNodeT, whatToShow: 772, filter?: NodeFilterInterface, entityReferenceExpansion?: boolean): TreeWalker<RootNodeT, DocumentType|Document|Text>;
-  createTreeWalker<RootNodeT: Document>(root: RootNodeT, whatToShow: 773, filter?: NodeFilterInterface, entityReferenceExpansion?: boolean): TreeWalker<RootNodeT, DocumentType|Document|Element|Text>;
-  createTreeWalker<RootNodeT: Document>(root: RootNodeT, whatToShow: 896, filter?: NodeFilterInterface, entityReferenceExpansion?: boolean): TreeWalker<RootNodeT, DocumentType|Document|Comment>;
-  createTreeWalker<RootNodeT: Document>(root: RootNodeT, whatToShow: 897, filter?: NodeFilterInterface, entityReferenceExpansion?: boolean): TreeWalker<RootNodeT, DocumentType|Document|Element|Comment>;
-  createTreeWalker<RootNodeT: Document>(root: RootNodeT, whatToShow: 900, filter?: NodeFilterInterface, entityReferenceExpansion?: boolean): TreeWalker<RootNodeT, DocumentType|Document|Text|Comment>;
-  createTreeWalker<RootNodeT: Document>(root: RootNodeT, whatToShow: 901, filter?: NodeFilterInterface, entityReferenceExpansion?: boolean): TreeWalker<RootNodeT, DocumentType|Document|Element|Text|Comment>;
-
-  // When (whatToShow & NodeFilter.SHOW_DOCUMENT_FRAGMENT === 1), RootNodeT
-  // must be a DocumentFragment.
-  createNodeIterator<RootNodeT: DocumentFragment>(root: RootNodeT, whatToShow: 1024, filter?: NodeFilterInterface): NodeIterator<RootNodeT, DocumentFragment>;
-  createNodeIterator<RootNodeT: DocumentFragment>(root: RootNodeT, whatToShow: 1025, filter?: NodeFilterInterface): NodeIterator<RootNodeT, DocumentFragment|Element>;
-  createNodeIterator<RootNodeT: DocumentFragment>(root: RootNodeT, whatToShow: 1028, filter?: NodeFilterInterface): NodeIterator<RootNodeT, DocumentFragment|Text>;
-  createNodeIterator<RootNodeT: DocumentFragment>(root: RootNodeT, whatToShow: 1029, filter?: NodeFilterInterface): NodeIterator<RootNodeT, DocumentFragment|Element|Text>;
-  createNodeIterator<RootNodeT: DocumentFragment>(root: RootNodeT, whatToShow: 1152, filter?: NodeFilterInterface): NodeIterator<RootNodeT, DocumentFragment|Comment>;
-  createNodeIterator<RootNodeT: DocumentFragment>(root: RootNodeT, whatToShow: 1153, filter?: NodeFilterInterface): NodeIterator<RootNodeT, DocumentFragment|Element|Comment>;
-  createNodeIterator<RootNodeT: DocumentFragment>(root: RootNodeT, whatToShow: 1156, filter?: NodeFilterInterface): NodeIterator<RootNodeT, DocumentFragment|Text|Comment>;
-  createNodeIterator<RootNodeT: DocumentFragment>(root: RootNodeT, whatToShow: 1157, filter?: NodeFilterInterface): NodeIterator<RootNodeT, DocumentFragment|Element|Text|Comment>;
-  createTreeWalker<RootNodeT: DocumentFragment>(root: RootNodeT, whatToShow: 1024, filter?: NodeFilterInterface, entityReferenceExpansion?: boolean): TreeWalker<RootNodeT, DocumentFragment>;
-  createTreeWalker<RootNodeT: DocumentFragment>(root: RootNodeT, whatToShow: 1025, filter?: NodeFilterInterface, entityReferenceExpansion?: boolean): TreeWalker<RootNodeT, DocumentFragment|Element>;
-  createTreeWalker<RootNodeT: DocumentFragment>(root: RootNodeT, whatToShow: 1028, filter?: NodeFilterInterface, entityReferenceExpansion?: boolean): TreeWalker<RootNodeT, DocumentFragment|Text>;
-  createTreeWalker<RootNodeT: DocumentFragment>(root: RootNodeT, whatToShow: 1029, filter?: NodeFilterInterface, entityReferenceExpansion?: boolean): TreeWalker<RootNodeT, DocumentFragment|Element|Text>;
-  createTreeWalker<RootNodeT: DocumentFragment>(root: RootNodeT, whatToShow: 1152, filter?: NodeFilterInterface, entityReferenceExpansion?: boolean): TreeWalker<RootNodeT, DocumentFragment|Comment>;
-  createTreeWalker<RootNodeT: DocumentFragment>(root: RootNodeT, whatToShow: 1153, filter?: NodeFilterInterface, entityReferenceExpansion?: boolean): TreeWalker<RootNodeT, DocumentFragment|Element|Comment>;
-  createTreeWalker<RootNodeT: DocumentFragment>(root: RootNodeT, whatToShow: 1156, filter?: NodeFilterInterface, entityReferenceExpansion?: boolean): TreeWalker<RootNodeT, DocumentFragment|Text|Comment>;
-  createTreeWalker<RootNodeT: DocumentFragment>(root: RootNodeT, whatToShow: 1157, filter?: NodeFilterInterface, entityReferenceExpansion?: boolean): TreeWalker<RootNodeT, DocumentFragment|Element|Text|Comment>;
-
-  // In the general case, RootNodeT may be any Node and whatToShow may be
-  // NodeFilter.SHOW_ALL or any combination of NodeFilter.SHOW_ELEMENT,
-  // NodeFilter.SHOW_TEXT and/or NodeFilter.SHOW_COMMENT
-  createNodeIterator<RootNodeT: Node>(root: RootNodeT, whatToShow: 1, filter?: NodeFilterInterface): NodeIterator<RootNodeT, Element>;
-  createNodeIterator<RootNodeT: Node>(root: RootNodeT, whatToShow: 4, filter?: NodeFilterInterface): NodeIterator<RootNodeT, Text>;
-  createNodeIterator<RootNodeT: Node>(root: RootNodeT, whatToShow: 5, filter?: NodeFilterInterface): NodeIterator<RootNodeT, Element|Text>;
-  createNodeIterator<RootNodeT: Node>(root: RootNodeT, whatToShow: 128, filter?: NodeFilterInterface): NodeIterator<RootNodeT, Comment>;
-  createNodeIterator<RootNodeT: Node>(root: RootNodeT, whatToShow: 129, filter?: NodeFilterInterface): NodeIterator<RootNodeT, Element|Comment>;
-  createNodeIterator<RootNodeT: Node>(root: RootNodeT, whatToShow: 132, filter?: NodeFilterInterface): NodeIterator<RootNodeT, Text|Comment>;
-  createNodeIterator<RootNodeT: Node>(root: RootNodeT, whatToShow: 133, filter?: NodeFilterInterface): NodeIterator<RootNodeT, Text|Element|Comment>;
-  createTreeWalker<RootNodeT: Node>(root: RootNodeT, whatToShow: 1, filter?: NodeFilterInterface, entityReferenceExpansion?: boolean): TreeWalker<RootNodeT, Element>;
-  createTreeWalker<RootNodeT: Node>(root: RootNodeT, whatToShow: 4, filter?: NodeFilterInterface, entityReferenceExpansion?: boolean): TreeWalker<RootNodeT, Text>;
-  createTreeWalker<RootNodeT: Node>(root: RootNodeT, whatToShow: 5, filter?: NodeFilterInterface, entityReferenceExpansion?: boolean): TreeWalker<RootNodeT, Element|Text>;
-  createTreeWalker<RootNodeT: Node>(root: RootNodeT, whatToShow: 128, filter?: NodeFilterInterface, entityReferenceExpansion?: boolean): TreeWalker<RootNodeT, Comment>;
-  createTreeWalker<RootNodeT: Node>(root: RootNodeT, whatToShow: 129, filter?: NodeFilterInterface, entityReferenceExpansion?: boolean): TreeWalker<RootNodeT, Element|Comment>;
-  createTreeWalker<RootNodeT: Node>(root: RootNodeT, whatToShow: 132, filter?: NodeFilterInterface, entityReferenceExpansion?: boolean): TreeWalker<RootNodeT, Text|Comment>;
-  createTreeWalker<RootNodeT: Node>(root: RootNodeT, whatToShow: 133, filter?: NodeFilterInterface, entityReferenceExpansion?: boolean): TreeWalker<RootNodeT, Text|Element|Comment>;
-
-  // Catch all for when we don't know the value of `whatToShow`
-  // And for when whatToShow is not provided, it is assumed to be SHOW_ALL
-  createNodeIterator<RootNodeT: Node>(root: RootNodeT, whatToShow?: number, filter?: NodeFilterInterface): NodeIterator<RootNodeT, Node>;
-  createTreeWalker<RootNodeT: Node>(root: RootNodeT, whatToShow?: number, filter?: NodeFilterInterface, entityReferenceExpansion?: boolean): TreeWalker<RootNodeT, Node>;
-
-  // From NonElementParentNode Mixin.
-  getElementById(elementId: string): HTMLElement | null;
-
-  // From DocumentOrShadowRoot Mixin.
-  +styleSheets: StyleSheetList;
-  adoptedStyleSheets: Array<CSSStyleSheet>;
-}
-
-declare class DocumentFragment extends Node {
-  // from ParentNode interface
-  childElementCount: number;
-  children: HTMLCollection<HTMLElement>;
-  firstElementChild: ?Element;
-  lastElementChild: ?Element;
-  append(...nodes: Array<string | Node>): void;
-  prepend(...nodes: Array<string | Node>): void;
-
-  querySelector(selector: string): HTMLElement | null;
-  querySelectorAll(selector: string): NodeList<HTMLElement>;
-
-  // From NonElementParentNode Mixin.
-  getElementById(elementId: string): HTMLElement | null;
-}
-
-declare class Selection {
-  anchorNode: Node | null;
-  anchorOffset: number;
-  focusNode: Node | null;
-  focusOffset: number;
-  isCollapsed: boolean;
-  rangeCount: number;
-  type: string;
-  addRange(range: Range): void;
-  getRangeAt(index: number): Range;
-  removeRange(range: Range): void;
-  removeAllRanges(): void;
-  collapse(parentNode: Node | null, offset?: number): void;
-  collapseToStart(): void;
-  collapseToEnd(): void;
-  containsNode(aNode: Node, aPartlyContained?: boolean): boolean;
-  deleteFromDocument(): void;
-  extend(parentNode: Node, offset?: number): void;
-  empty(): void;
-  selectAllChildren(parentNode: Node): void;
-  setPosition(aNode: Node | null, offset?: number): void;
-  setBaseAndExtent(anchorNode: Node, anchorOffset: number, focusNode: Node, focusOffset: number): void;
-  toString(): string;
-}
-
-declare class Range { // extension
-  startOffset: number;
-  collapsed: boolean;
-  endOffset: number;
-  startContainer: Node;
-  endContainer: Node;
-  commonAncestorContainer: Node;
-  setStart(refNode: Node, offset: number): void;
-  setEndBefore(refNode: Node): void;
-  setStartBefore(refNode: Node): void;
-  selectNode(refNode: Node): void;
-  detach(): void;
-  getBoundingClientRect(): DOMRect;
-  toString(): string;
-  compareBoundaryPoints(how: number, sourceRange: Range): number;
-  insertNode(newNode: Node): void;
-  collapse(toStart: boolean): void;
-  selectNodeContents(refNode: Node): void;
-  cloneContents(): DocumentFragment;
-  setEnd(refNode: Node, offset: number): void;
-  cloneRange(): Range;
-  getClientRects(): DOMRectList;
-  surroundContents(newParent: Node): void;
-  deleteContents(): void;
-  setStartAfter(refNode: Node): void;
-  extractContents(): DocumentFragment;
-  setEndAfter(refNode: Node): void;
-  createContextualFragment(fragment: string | TrustedHTML): DocumentFragment;
-  intersectsNode(refNode: Node): boolean;
-  isPointInRange(refNode: Node, offset: number): boolean;
-  static END_TO_END: number;
-  static START_TO_START: number;
-  static START_TO_END: number;
-  static END_TO_START: number;
-}
-
-declare var document: Document;
-
-// TODO: HTMLDocument
-type FocusOptions = { preventScroll?: boolean, ... }
-
-declare class DOMTokenList {
-  @@iterator(): Iterator<string>;
-  length: number;
-  item(index: number): string;
-  contains(token: string): boolean;
-  add(...token: Array<string>): void;
-  remove(...token: Array<string>): void;
-  toggle(token: string, force?: boolean): boolean;
-  replace(oldToken: string, newToken: string): boolean;
-
-  forEach(callbackfn: (value: string, index: number, list: DOMTokenList) => any, thisArg?: any): void;
-  entries(): Iterator<[number, string]>;
-  keys(): Iterator<number>;
-  values(): Iterator<string>;
-  [index: number]: string;
-}
-
-
-declare class Element extends Node implements Animatable {
-  animate(keyframes: Keyframe[] | PropertyIndexedKeyframes | null, options?: number | KeyframeAnimationOptions): Animation;
-  getAnimations(options?: GetAnimationsOptions): Animation[];
-  assignedSlot: ?HTMLSlotElement;
-  attachShadow(shadowRootInitDict: ShadowRootInit): ShadowRoot;
-  attributes: NamedNodeMap;
-  classList: DOMTokenList;
-  className: string;
-  clientHeight: number;
-  clientLeft: number;
-  clientTop: number;
-  clientWidth: number;
-  id: string;
-  // flowlint unsafe-getters-setters:off
-  get innerHTML(): string;
-  set innerHTML(value: string | TrustedHTML): void;
-  // flowlint unsafe-getters-setters:error
-  localName: string;
-  namespaceURI: ?string;
-  nextElementSibling: ?Element;
-  // flowlint unsafe-getters-setters:off
-  get outerHTML(): string;
-  set outerHTML(value: string | TrustedHTML): void;
-  // flowlint unsafe-getters-setters:error
-  prefix: string | null;
-  previousElementSibling: ?Element;
-  scrollHeight: number;
-  scrollLeft: number;
-  scrollTop: number;
-  scrollWidth: number;
-  +tagName: string;
-
-  // TODO: a lot more ARIA properties
-  ariaHidden: void | 'true' | 'false';
-
-  closest(selectors: string): ?Element;
-
-  getAttribute(name?: string): ?string;
-  getAttributeNames(): Array<string>;
-  getAttributeNS(namespaceURI: string | null, localName: string): string | null;
-  getAttributeNode(name: string): Attr | null;
-  getAttributeNodeNS(namespaceURI: string | null, localName: string): Attr | null;
-  getBoundingClientRect(): DOMRect;
-  getClientRects(): DOMRectList;
-  getElementsByClassName(names: string): HTMLCollection<HTMLElement>;
-  getElementsByTagName(name: 'a'): HTMLCollection<HTMLAnchorElement>;
-  getElementsByTagName(name: 'audio'): HTMLCollection<HTMLAudioElement>;
-  getElementsByTagName(name: 'br'): HTMLCollection<HTMLBRElement>;
-  getElementsByTagName(name: 'button'): HTMLCollection<HTMLButtonElement>;
-  getElementsByTagName(name: 'canvas'): HTMLCollection<HTMLCanvasElement>;
-  getElementsByTagName(name: 'col'): HTMLCollection<HTMLTableColElement>;
-  getElementsByTagName(name: 'colgroup'): HTMLCollection<HTMLTableColElement>;
-  getElementsByTagName(name: 'data'): HTMLCollection<HTMLDataElement>;
-  getElementsByTagName(name: 'datalist'): HTMLCollection<HTMLDataElement>;
-  getElementsByTagName(name: 'del'): HTMLCollection<HTMLModElement>;
-  getElementsByTagName(name: 'details'): HTMLCollection<HTMLDetailsElement>;
-  getElementsByTagName(name: 'dialog'): HTMLCollection<HTMLDialogElement>;
-  getElementsByTagName(name: 'div'): HTMLCollection<HTMLDivElement>;
-  getElementsByTagName(name: 'dl'): HTMLCollection<HTMLDListElement>;
-  getElementsByTagName(name: 'fieldset'): HTMLCollection<HTMLFieldSetElement>;
-  getElementsByTagName(name: 'form'): HTMLCollection<HTMLFormElement>;
-  getElementsByTagName(name: 'h1' | 'h2' | 'h3' | 'h4' | 'h5' | 'h6'): HTMLCollection<HTMLHeadingElement>;
-  getElementsByTagName(name: 'head'): HTMLCollection<HTMLHeadElement>;
-  getElementsByTagName(name: 'hr'): HTMLCollection<HTMLHRElement>;
-  getElementsByTagName(name: 'iframe'): HTMLCollection<HTMLIFrameElement>;
-  getElementsByTagName(name: 'img'): HTMLCollection<HTMLImageElement>;
-  getElementsByTagName(name: 'input'): HTMLCollection<HTMLInputElement>;
-  getElementsByTagName(name: 'ins'): HTMLCollection<HTMLModElement>;
-  getElementsByTagName(name: 'label'): HTMLCollection<HTMLLabelElement>;
-  getElementsByTagName(name: 'legend'): HTMLCollection<HTMLLegendElement>;
-  getElementsByTagName(name: 'li'): HTMLCollection<HTMLLIElement>;
-  getElementsByTagName(name: 'link'): HTMLCollection<HTMLLinkElement>;
-  getElementsByTagName(name: 'meta'): HTMLCollection<HTMLMetaElement>;
-  getElementsByTagName(name: 'meter'): HTMLCollection<HTMLMeterElement>;
-  getElementsByTagName(name: 'object'): HTMLCollection<HTMLObjectElement>;
-  getElementsByTagName(name: 'ol'): HTMLCollection<HTMLOListElement>;
-  getElementsByTagName(name: 'option'): HTMLCollection<HTMLOptionElement>;
-  getElementsByTagName(name: 'optgroup'): HTMLCollection<HTMLOptGroupElement>;
-  getElementsByTagName(name: 'p'): HTMLCollection<HTMLParagraphElement>;
-  getElementsByTagName(name: 'param'): HTMLCollection<HTMLParamElement>;
-  getElementsByTagName(name: 'picture'): HTMLCollection<HTMLPictureElement>;
-  getElementsByTagName(name: 'pre'): HTMLCollection<HTMLPreElement>;
-  getElementsByTagName(name: 'progress'): HTMLCollection<HTMLProgressElement>;
-  getElementsByTagName(name: 'script'): HTMLCollection<HTMLScriptElement>;
-  getElementsByTagName(name: 'select'): HTMLCollection<HTMLSelectElement>;
-  getElementsByTagName(name: 'source'): HTMLCollection<HTMLSourceElement>;
-  getElementsByTagName(name: 'span'): HTMLCollection<HTMLSpanElement>;
-  getElementsByTagName(name: 'style'): HTMLCollection<HTMLStyleElement>;
-  getElementsByTagName(name: 'textarea'): HTMLCollection<HTMLTextAreaElement>;
-  getElementsByTagName(name: 'video'): HTMLCollection<HTMLVideoElement>;
-  getElementsByTagName(name: 'table'): HTMLCollection<HTMLTableElement>;
-  getElementsByTagName(name: 'title'): HTMLCollection<HTMLTitleElement>;
-  getElementsByTagName(name: 'caption'): HTMLCollection<HTMLTableCaptionElement>;
-  getElementsByTagName(name: 'thead' | 'tfoot' | 'tbody'): HTMLCollection<HTMLTableSectionElement>;
-  getElementsByTagName(name: 'tr'): HTMLCollection<HTMLTableRowElement>;
-  getElementsByTagName(name: 'td' | 'th'): HTMLCollection<HTMLTableCellElement>;
-  getElementsByTagName(name: 'template'): HTMLCollection<HTMLTemplateElement>;
-  getElementsByTagName(name: 'ul'): HTMLCollection<HTMLUListElement>;
-  getElementsByTagName(name: string): HTMLCollection<HTMLElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'a'): HTMLCollection<HTMLAnchorElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'audio'): HTMLCollection<HTMLAudioElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'br'): HTMLCollection<HTMLBRElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'button'): HTMLCollection<HTMLButtonElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'canvas'): HTMLCollection<HTMLCanvasElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'col'): HTMLCollection<HTMLTableColElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'colgroup'): HTMLCollection<HTMLTableColElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'data'): HTMLCollection<HTMLDataElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'datalist'): HTMLCollection<HTMLDataListElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'del'): HTMLCollection<HTMLModElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'details'): HTMLCollection<HTMLDetailsElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'dialog'): HTMLCollection<HTMLDialogElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'div'): HTMLCollection<HTMLDivElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'dl'): HTMLCollection<HTMLDListElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'fieldset'): HTMLCollection<HTMLFieldSetElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'form'): HTMLCollection<HTMLFormElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'h1' | 'h2' | 'h3' | 'h4' | 'h5' | 'h6'): HTMLCollection<HTMLHeadingElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'head'): HTMLCollection<HTMLHeadElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'hr'): HTMLCollection<HTMLHRElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'iframe'): HTMLCollection<HTMLIFrameElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'img'): HTMLCollection<HTMLImageElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'input'): HTMLCollection<HTMLInputElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'ins'): HTMLCollection<HTMLModElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'label'): HTMLCollection<HTMLLabelElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'legend'): HTMLCollection<HTMLLegendElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'li'): HTMLCollection<HTMLLIElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'link'): HTMLCollection<HTMLLinkElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'meta'): HTMLCollection<HTMLMetaElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'meter'): HTMLCollection<HTMLMeterElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'object'): HTMLCollection<HTMLObjectElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'ol'): HTMLCollection<HTMLOListElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'option'): HTMLCollection<HTMLOptionElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'optgroup'): HTMLCollection<HTMLOptGroupElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'p'): HTMLCollection<HTMLParagraphElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'param'): HTMLCollection<HTMLParamElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'picture'): HTMLCollection<HTMLPictureElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'pre'): HTMLCollection<HTMLPreElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'progress'): HTMLCollection<HTMLProgressElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'script'): HTMLCollection<HTMLScriptElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'select'): HTMLCollection<HTMLSelectElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'source'): HTMLCollection<HTMLSourceElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'span'): HTMLCollection<HTMLSpanElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'style'): HTMLCollection<HTMLStyleElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'textarea'): HTMLCollection<HTMLTextAreaElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'video'): HTMLCollection<HTMLVideoElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'table'): HTMLCollection<HTMLTableElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'title'): HTMLCollection<HTMLTitleElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'caption'): HTMLCollection<HTMLTableCaptionElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'thead' | 'tfoot' | 'tbody'): HTMLCollection<HTMLTableSectionElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'tr'): HTMLCollection<HTMLTableRowElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'td' | 'th'): HTMLCollection<HTMLTableCellElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'template'): HTMLCollection<HTMLTemplateElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: 'ul'): HTMLCollection<HTMLUListElement>;
-  getElementsByTagNameNS(namespaceURI: string | null, localName: string): HTMLCollection<HTMLElement>;
-  hasAttribute(name: string): boolean;
-  hasAttributeNS(namespaceURI: string | null, localName: string): boolean;
-  hasAttributes(): boolean;
-  hasPointerCapture(pointerId: number): boolean;
-  insertAdjacentElement(position: 'beforebegin' | 'afterbegin' | 'beforeend' | 'afterend', element: Element): void;
-  insertAdjacentHTML(position: 'beforebegin' | 'afterbegin' | 'beforeend' | 'afterend', html: string | TrustedHTML): void;
-  insertAdjacentText(position: 'beforebegin' | 'afterbegin' | 'beforeend' | 'afterend', text: string): void;
-  matches(selector: string): boolean;
-  releasePointerCapture(pointerId: number): void;
-  removeAttribute(name?: string): void;
-  removeAttributeNode(attributeNode: Attr): Attr;
-  removeAttributeNS(namespaceURI: string | null, localName: string): void;
-  requestFullscreen(options?: { navigationUI: 'auto' | 'show' | 'hide', ... }): Promise<void>;
-  requestPointerLock(): void;
-  scrollIntoView(arg?: (boolean | {
-         behavior?: ('auto' | 'instant' | 'smooth'),
-         block?: ('start' | 'center' | 'end' | 'nearest'),
-         inline?: ('start' | 'center' | 'end' | 'nearest'),
-         ...
-  })): void;
-  scroll(x: number, y: number): void;
-  scroll(options: ScrollToOptions): void;
-  scrollTo(x: number, y: number): void;
-  scrollTo(options: ScrollToOptions): void;
-  scrollBy(x: number, y: number): void;
-  scrollBy(options: ScrollToOptions): void;
-  setAttribute(name?: string, value?: string): void;
-  toggleAttribute(name?: string, force?: boolean): void;
-  setAttributeNS(namespaceURI: string | null, qualifiedName: string, value: string): void;
-  setAttributeNode(newAttr: Attr): Attr | null;
-  setAttributeNodeNS(newAttr: Attr): Attr | null;
-  setPointerCapture(pointerId: number): void;
-  shadowRoot?: ShadowRoot;
-  slot?: string;
-
-  // from ParentNode interface
-  childElementCount: number;
-  children: HTMLCollection<HTMLElement>;
-  firstElementChild: ?Element;
-  lastElementChild: ?Element;
-  append(...nodes: Array<string | Node>): void;
-  prepend(...nodes: Array<string | Node>): void;
-
-  querySelector(selector: 'a'): HTMLAnchorElement | null;
-  querySelector(selector: 'area'): HTMLAreaElement | null;
-  querySelector(selector: 'audio'): HTMLAudioElement | null;
-  querySelector(selector: 'blockquote'): HTMLQuoteElement | null;
-  querySelector(selector: 'body'): HTMLBodyElement | null;
-  querySelector(selector: 'br'): HTMLBRElement | null;
-  querySelector(selector: 'button'): HTMLButtonElement | null;
-  querySelector(selector: 'canvas'): HTMLCanvasElement | null;
-  querySelector(selector: 'col'): HTMLTableColElement | null;
-  querySelector(selector: 'colgroup'): HTMLTableColElement | null;
-  querySelector(selector: 'data'): HTMLDataElement | null;
-  querySelector(selector: 'datalist'): HTMLDataListElement | null;
-  querySelector(selector: 'del'): HTMLModElement | null;
-  querySelector(selector: 'details'): HTMLDetailsElement | null;
-  querySelector(selector: 'dialog'): HTMLDialogElement | null;
-  querySelector(selector: 'div'): HTMLDivElement | null;
-  querySelector(selector: 'dl'): HTMLDListElement | null;
-  querySelector(selector: 'embed'): HTMLEmbedElement | null;
-  querySelector(selector: 'fieldset'): HTMLFieldSetElement | null;
-  querySelector(selector: 'form'): HTMLFormElement | null;
-  querySelector(selector: 'h1' | 'h2' | 'h3' | 'h4' | 'h5' | 'h6'): HTMLHeadingElement;
-  querySelector(selector: 'head'): HTMLHeadElement | null;
-  querySelector(selector: 'hr'): HTMLHRElement | null;
-  querySelector(selector: 'html'): HTMLHtmlElement | null;
-  querySelector(selector: 'iframe'): HTMLIFrameElement | null;
-  querySelector(selector: 'img'): HTMLImageElement | null;
-  querySelector(selector: 'ins'): HTMLModElement | null;
-  querySelector(selector: 'input'): HTMLInputElement | null;
-  querySelector(selector: 'label'): HTMLLabelElement | null;
-  querySelector(selector: 'legend'): HTMLLegendElement | null;
-  querySelector(selector: 'li'): HTMLLIElement | null;
-  querySelector(selector: 'link'): HTMLLinkElement | null;
-  querySelector(selector: 'map'): HTMLMapElement | null;
-  querySelector(selector: 'meta'): HTMLMetaElement | null;
-  querySelector(selector: 'meter'): HTMLMeterElement | null;
-  querySelector(selector: 'object'): HTMLObjectElement | null;
-  querySelector(selector: 'ol'): HTMLOListElement | null;
-  querySelector(selector: 'option'): HTMLOptionElement | null;
-  querySelector(selector: 'optgroup'): HTMLOptGroupElement | null;
-  querySelector(selector: 'p'): HTMLParagraphElement | null;
-  querySelector(selector: 'param'): HTMLParamElement | null;
-  querySelector(selector: 'picture'): HTMLPictureElement | null;
-  querySelector(selector: 'pre'): HTMLPreElement | null;
-  querySelector(selector: 'progress'): HTMLProgressElement | null;
-  querySelector(selector: 'q'): HTMLQuoteElement | null;
-  querySelector(selector: 'script'): HTMLScriptElement | null;
-  querySelector(selector: 'select'): HTMLSelectElement | null;
-  querySelector(selector: 'source'): HTMLSourceElement | null;
-  querySelector(selector: 'span'): HTMLSpanElement | null;
-  querySelector(selector: 'style'): HTMLStyleElement | null;
-  querySelector(selector: 'textarea'): HTMLTextAreaElement | null;
-  querySelector(selector: 'time'): HTMLTimeElement | null;
-  querySelector(selector: 'title'): HTMLTitleElement | null;
-  querySelector(selector: 'track'): HTMLTrackElement | null;
-  querySelector(selector: 'video'): HTMLVideoElement | null;
-  querySelector(selector: 'table'): HTMLTableElement | null;
-  querySelector(selector: 'caption'): HTMLTableCaptionElement | null;
-  querySelector(selector: 'thead' | 'tfoot' | 'tbody'): HTMLTableSectionElement | null;
-  querySelector(selector: 'tr'): HTMLTableRowElement | null;
-  querySelector(selector: 'td' | 'th'): HTMLTableCellElement | null;
-  querySelector(selector: 'template'): HTMLTemplateElement | null;
-  querySelector(selector: 'ul'): HTMLUListElement | null;
-  querySelector(selector: string): HTMLElement | null;
-
-  querySelectorAll(selector: 'a'): NodeList<HTMLAnchorElement>;
-  querySelectorAll(selector: 'area'): NodeList<HTMLAreaElement>;
-  querySelectorAll(selector: 'audio'): NodeList<HTMLAudioElement>;
-  querySelectorAll(selector: 'blockquote'): NodeList<HTMLQuoteElement>;
-  querySelectorAll(selector: 'body'): NodeList<HTMLBodyElement>;
-  querySelectorAll(selector: 'br'): NodeList<HTMLBRElement>;
-  querySelectorAll(selector: 'button'): NodeList<HTMLButtonElement>;
-  querySelectorAll(selector: 'canvas'): NodeList<HTMLCanvasElement>;
-  querySelectorAll(selector: 'col'): NodeList<HTMLTableColElement>;
-  querySelectorAll(selector: 'colgroup'): NodeList<HTMLTableColElement>;
-  querySelectorAll(selector: 'data'): NodeList<HTMLDataElement>;
-  querySelectorAll(selector: 'datalist'): NodeList<HTMLDataListElement>;
-  querySelectorAll(selector: 'del'): NodeList<HTMLModElement>;
-  querySelectorAll(selector: 'details'): NodeList<HTMLDetailsElement>;
-  querySelectorAll(selector: 'dialog'): NodeList<HTMLDialogElement>;
-  querySelectorAll(selector: 'div'): NodeList<HTMLDivElement>;
-  querySelectorAll(selector: 'dl'): NodeList<HTMLDListElement>;
-  querySelectorAll(selector: 'embed'): NodeList<HTMLEmbedElement>;
-  querySelectorAll(selector: 'fieldset'): NodeList<HTMLFieldSetElement>;
-  querySelectorAll(selector: 'form'): NodeList<HTMLFormElement>;
-  querySelectorAll(selector: 'h1' | 'h2' | 'h3' | 'h4' | 'h5' | 'h6'): NodeList<HTMLHeadingElement>;
-  querySelectorAll(selector: 'head'): NodeList<HTMLHeadElement>;
-  querySelectorAll(selector: 'hr'): NodeList<HTMLHRElement>;
-  querySelectorAll(selector: 'html'): NodeList<HTMLHtmlElement>;
-  querySelectorAll(selector: 'iframe'): NodeList<HTMLIFrameElement>;
-  querySelectorAll(selector: 'img'): NodeList<HTMLImageElement>;
-  querySelectorAll(selector: 'input'): NodeList<HTMLInputElement>;
-  querySelectorAll(selector: 'ins'): NodeList<HTMLModElement>;
-  querySelectorAll(selector: 'label'): NodeList<HTMLLabelElement>;
-  querySelectorAll(selector: 'legend'): NodeList<HTMLLegendElement>;
-  querySelectorAll(selector: 'li'): NodeList<HTMLLIElement>;
-  querySelectorAll(selector: 'link'): NodeList<HTMLLinkElement>;
-  querySelectorAll(selector: 'map'): NodeList<HTMLMapElement>;
-  querySelectorAll(selector: 'meta'): NodeList<HTMLMetaElement>;
-  querySelectorAll(selector: 'meter'): NodeList<HTMLMeterElement>;
-  querySelectorAll(selector: 'object'): NodeList<HTMLObjectElement>;
-  querySelectorAll(selector: 'ol'): NodeList<HTMLOListElement>;
-  querySelectorAll(selector: 'option'): NodeList<HTMLOptionElement>;
-  querySelectorAll(selector: 'optgroup'): NodeList<HTMLOptGroupElement>;
-  querySelectorAll(selector: 'p'): NodeList<HTMLParagraphElement>;
-  querySelectorAll(selector: 'param'): NodeList<HTMLParamElement>;
-  querySelectorAll(selector: 'picture'): NodeList<HTMLPictureElement>;
-  querySelectorAll(selector: 'pre'): NodeList<HTMLPreElement>;
-  querySelectorAll(selector: 'progress'): NodeList<HTMLProgressElement>;
-  querySelectorAll(selector: 'q'): NodeList<HTMLQuoteElement>;
-  querySelectorAll(selector: 'script'): NodeList<HTMLScriptElement>;
-  querySelectorAll(selector: 'select'): NodeList<HTMLSelectElement>;
-  querySelectorAll(selector: 'source'): NodeList<HTMLSourceElement>;
-  querySelectorAll(selector: 'span'): NodeList<HTMLSpanElement>;
-  querySelectorAll(selector: 'style'): NodeList<HTMLStyleElement>;
-  querySelectorAll(selector: 'textarea'): NodeList<HTMLTextAreaElement>;
-  querySelectorAll(selector: 'time'): NodeList<HTMLTimeElement>;
-  querySelectorAll(selector: 'title'): NodeList<HTMLTitleElement>;
-  querySelectorAll(selector: 'track'): NodeList<HTMLTrackElement>;
-  querySelectorAll(selector: 'video'): NodeList<HTMLVideoElement>;
-  querySelectorAll(selector: 'table'): NodeList<HTMLTableElement>;
-  querySelectorAll(selector: 'caption'): NodeList<HTMLTableCaptionElement>;
-  querySelectorAll(selector: 'thead' | 'tfoot' | 'tbody'): NodeList<HTMLTableSectionElement>;
-  querySelectorAll(selector: 'tr'): NodeList<HTMLTableRowElement>;
-  querySelectorAll(selector: 'td' | 'th'): NodeList<HTMLTableCellElement>;
-  querySelectorAll(selector: 'template'): NodeList<HTMLTemplateElement>;
-  querySelectorAll(selector: 'ul'): NodeList<HTMLUListElement>;
-  querySelectorAll(selector: string): NodeList<HTMLElement>;
-
-  // from ChildNode interface
-  after(...nodes: Array<string | Node>): void;
-  before(...nodes: Array<string | Node>): void;
-  replaceWith(...nodes: Array<string | Node>): void;
-  remove(): void;
-}
-
-declare class HTMLElement extends Element {
-  blur(): void;
-  click(): void;
-  focus(options?: FocusOptions): void;
-  getBoundingClientRect(): DOMRect;
-  forceSpellcheck(): void;
-  accessKey: string;
-  accessKeyLabel: string;
-  contentEditable: string;
-  contextMenu: ?HTMLMenuElement;
-  dataset: DOMStringMap;
-  dir: 'ltr' | 'rtl' | 'auto';
-  draggable: boolean;
-  dropzone: any;
-  hidden: boolean;
-  inert: boolean;
-  isContentEditable: boolean;
-  itemProp: any;
-  itemScope: boolean;
-  itemType: any;
-  itemValue: Object;
-  lang: string;
-  offsetHeight: number;
-  offsetLeft: number;
-  offsetParent: ?Element;
-  offsetTop: number;
-  offsetWidth: number;
-  onabort: ?Function;
-  onblur: ?Function;
-  oncancel: ?Function;
-  oncanplay: ?Function;
-  oncanplaythrough: ?Function;
-  onchange: ?Function;
-  onclick: ?Function;
-  oncontextmenu: ?Function;
-  oncuechange: ?Function;
-  ondblclick: ?Function;
-  ondurationchange: ?Function;
-  onemptied: ?Function;
-  onended: ?Function;
-  onerror: ?Function;
-  onfocus: ?Function;
-  onfullscreenchange: ?Function;
-  onfullscreenerror: ?Function;
-  ongotpointercapture: ?Function,
-  oninput: ?Function;
-  oninvalid: ?Function;
-  onkeydown: ?Function;
-  onkeypress: ?Function;
-  onkeyup: ?Function;
-  onload: ?Function;
-  onloadeddata: ?Function;
-  onloadedmetadata: ?Function;
-  onloadstart: ?Function;
-  onlostpointercapture: ?Function,
-  onmousedown: ?Function;
-  onmouseenter: ?Function;
-  onmouseleave: ?Function;
-  onmousemove: ?Function;
-  onmouseout: ?Function;
-  onmouseover: ?Function;
-  onmouseup: ?Function;
-  onmousewheel: ?Function;
-  onpause: ?Function;
-  onplay: ?Function;
-  onplaying: ?Function;
-  onpointercancel: ?Function,
-  onpointerdown: ?Function,
-  onpointerenter: ?Function,
-  onpointerleave: ?Function,
-  onpointermove: ?Function,
-  onpointerout: ?Function,
-  onpointerover: ?Function,
-  onpointerup: ?Function,
-  onprogress: ?Function;
-  onratechange: ?Function;
-  onreadystatechange: ?Function;
-  onreset: ?Function;
-  onresize: ?Function;
-  onscroll: ?Function;
-  onseeked: ?Function;
-  onseeking: ?Function;
-  onselect: ?Function;
-  onshow: ?Function;
-  onstalled: ?Function;
-  onsubmit: ?Function;
-  onsuspend: ?Function;
-  ontimeupdate: ?Function;
-  ontoggle: ?Function;
-  onvolumechange: ?Function;
-  onwaiting: ?Function;
-  properties: any;
-  spellcheck: boolean;
-  style: CSSStyleDeclaration;
-  tabIndex: number;
-  title: string;
-  translate: boolean;
-}
-
-declare class HTMLSlotElement extends HTMLElement {
-  name: string;
-  assignedNodes(options?: { flatten: boolean, ... }): Node[];
-}
-
-declare class HTMLTableElement extends HTMLElement {
-  tagName: 'TABLE';
-  caption: HTMLTableCaptionElement | null;
-  tHead: HTMLTableSectionElement | null;
-  tFoot: HTMLTableSectionElement | null;
-  +tBodies: HTMLCollection<HTMLTableSectionElement>;
-  +rows: HTMLCollection<HTMLTableRowElement>;
-  createTHead(): HTMLTableSectionElement;
-  deleteTHead(): void;
-  createTFoot(): HTMLTableSectionElement;
-  deleteTFoot(): void;
-  createCaption(): HTMLTableCaptionElement;
-  deleteCaption(): void;
-  insertRow(index?: number): HTMLTableRowElement;
-  deleteRow(index: number): void;
-}
-
-declare class HTMLTableCaptionElement extends HTMLElement {
-  tagName: 'CAPTION';
-}
-
-declare class HTMLTableColElement extends HTMLElement {
-  tagName: 'COL' | 'COLGROUP';
-  span: number;
-}
-
-declare class HTMLTableSectionElement extends HTMLElement {
-  tagName: 'THEAD' | 'TFOOT' | 'TBODY';
-  +rows: HTMLCollection<HTMLTableRowElement>;
-  insertRow(index?: number): HTMLTableRowElement;
-  deleteRow(index: number): void;
-}
-
-declare class HTMLTableCellElement extends HTMLElement {
-  tagName: 'TD' | 'TH';
-  colSpan: number;
-  rowSpan: number;
-  +cellIndex: number;
-}
-
-declare class HTMLTableRowElement extends HTMLElement {
-  tagName: 'TR';
-  align: 'left' | 'right' | 'center';
-  +rowIndex: number;
-  +sectionRowIndex: number;
-  +cells: HTMLCollection<HTMLTableCellElement>;
-  deleteCell(index: number): void;
-  insertCell(index?: number): HTMLTableCellElement;
-}
-
-declare class HTMLMenuElement extends HTMLElement {
-  getCompact(): boolean;
-  setCompact(compact: boolean): void;
-}
-
-declare class HTMLBaseElement extends HTMLElement {
-  href: string;
-  target: string;
-}
-
-declare class HTMLTemplateElement extends HTMLElement {
-  content: DocumentFragment;
-}
-
-declare class CanvasGradient {
-  addColorStop(offset: number, color: string): void;
-}
-
-declare class CanvasPattern {
-  setTransform(matrix: SVGMatrix): void;
-}
-
-declare class ImageBitmap {
-  close(): void;
-  width: number;
-  height: number;
-}
-
-type CanvasFillRule = string;
-
-type CanvasImageSource = HTMLImageElement | HTMLVideoElement | HTMLCanvasElement | CanvasRenderingContext2D | ImageBitmap;
-
-declare class HitRegionOptions {
-  path?: Path2D,
-  fillRule?: CanvasFillRule,
-  id?: string,
-  parentID?: string;
-  cursor?: string;
-  control?: Element;
-  label: ?string;
-  role: ?string;
-};
-
-declare class CanvasDrawingStyles {
-  lineWidth: number;
-  lineCap: string;
-  lineJoin: string;
-  miterLimit: number;
-
-  // dashed lines
-  setLineDash(segments: Array<number>): void;
-  getLineDash(): Array<number>;
-  lineDashOffset: number;
-
-  // text
-  font: string;
-  textAlign: string;
-  textBaseline: string;
-  direction: string;
-};
-
-declare class SVGMatrix {
-  getComponent(index: number): number;
-  mMultiply(secondMatrix: SVGMatrix): SVGMatrix;
-  inverse(): SVGMatrix;
-  mTranslate(x: number, y: number): SVGMatrix;
-  mScale(scaleFactor: number): SVGMatrix;
-  mRotate(angle: number): SVGMatrix;
-};
-
-declare class TextMetrics {
-  // x-direction
-  width: number;
-  actualBoundingBoxLeft: number;
-  actualBoundingBoxRight: number;
-
-  // y-direction
-  fontBoundingBoxAscent: number;
-  fontBoundingBoxDescent: number;
-  actualBoundingBoxAscent: number;
-  actualBoundingBoxDescent: number;
-  emHeightAscent: number;
-  emHeightDescent: number;
-  hangingBaseline: number;
-  alphabeticBaseline: number;
-  ideographicBaseline: number;
-};
-
-declare class Path2D {
-  constructor(path?: Path2D | string): void;
-
-  addPath(path: Path2D, transformation?: ?SVGMatrix): void;
-  addPathByStrokingPath(path: Path2D, styles: CanvasDrawingStyles, transformation?: ?SVGMatrix): void;
-  addText(text: string, styles: CanvasDrawingStyles, transformation: ?SVGMatrix, x: number, y: number, maxWidth?: number): void;
-  addPathByStrokingText(text: string, styles: CanvasDrawingStyles, transformation: ?SVGMatrix, x: number, y: number, maxWidth?: number): void;
-  addText(text: string, styles: CanvasDrawingStyles, transformation: ?SVGMatrix, path: Path2D, maxWidth?: number): void;
-  addPathByStrokingText(text: string, styles: CanvasDrawingStyles, transformation: ?SVGMatrix, path: Path2D, maxWidth?: number): void;
-
-  // CanvasPathMethods
-  // shared path API methods
-  arc(x: number, y: number, radius: number, startAngle: number, endAngle: number, anticlockwise?: boolean): void;
-  arcTo(x1: number, y1: number, x2: number, y2: number, radius: number, _: void, _: void): void;
-  arcTo(x1: number, y1: number, x2: number, y2: number, radiusX: number, radiusY: number, rotation: number): void;
-  bezierCurveTo(cp1x: number, cp1y: number, cp2x: number, cp2y: number, x: number, y: number): void;
-  closePath(): void;
-  ellipse(x: number, y: number, radiusX: number, radiusY: number, rotation: number, startAngle: number, endAngle: number, anticlockwise?: boolean): void;
-  lineTo(x: number, y: number): void;
-  moveTo(x: number, y: number): void;
-  quadraticCurveTo(cpx: number, cpy: number, x: number, y: number): void;
-  rect(x: number, y: number, w: number, h: number): void;
-};
-
-declare class ImageData {
-  width: number;
-  height: number;
-  data: Uint8ClampedArray;
-
-  // constructor methods are used in Worker where CanvasRenderingContext2D
-  //  is unavailable.
-  // https://html.spec.whatwg.org/multipage/scripting.html#dom-imagedata
-  constructor(data: Uint8ClampedArray, width: number, height: number): void;
-  constructor(width: number, height: number): void;
-};
-
-interface DOMPointInit {
-  w?: number;
-  x?: number;
-  y?: number;
-  z?: number;
-}
-
-declare class CanvasRenderingContext2D {
-  canvas: HTMLCanvasElement;
-
-  // canvas dimensions
-  width: number;
-  height: number;
-
-  // for contexts that aren't directly fixed to a specific canvas
-  commit(): void;
-
-  // state
-  save(): void;
-  restore(): void;
-
-  // transformations
-  currentTransform: SVGMatrix;
-  scale(x: number, y: number): void;
-  rotate(angle: number): void;
-  translate(x: number, y: number): void;
-  transform(a: number, b: number, c: number, d: number, e: number, f: number): void;
-  setTransform(a: number, b: number, c: number, d: number, e: number, f: number): void;
-  resetTransform(): void;
-
-  // compositing
-  globalAlpha: number;
-  globalCompositeOperation: string;
-
-  // image smoothing
-  imageSmoothingEnabled: boolean;
-  imageSmoothingQuality: 'low' | 'medium' | 'high';
-
-  // filters
-  filter: string;
-
-  // colours and styles
-  strokeStyle: string | CanvasGradient | CanvasPattern;
-  fillStyle: string | CanvasGradient | CanvasPattern;
-  createLinearGradient(x0: number, y0: number, x1: number, y1: number): CanvasGradient;
-  createRadialGradient(x0: number, y0: number, r0: number, x1: number, y1: number, r1: number): CanvasGradient;
-  createPattern(image: CanvasImageSource, repetition: ?string): CanvasPattern;
-
-  // shadows
-  shadowOffsetX: number;
-  shadowOffsetY: number;
-  shadowBlur: number;
-  shadowColor: string;
-
-  // rects
-  clearRect(x: number, y: number, w: number, h: number): void;
-  fillRect(x: number, y: number, w: number, h: number): void;
-  roundRect(x: number, y: number, w: number, h: number, radii?: number | DOMPointInit | $ReadOnlyArray<number | DOMPointInit>): void;
-  strokeRect(x: number, y: number, w: number, h: number): void;
-
-  // path API
-  beginPath(): void;
-  fill(fillRule?: CanvasFillRule): void;
-  fill(path: Path2D, fillRule?: CanvasFillRule): void;
-  stroke(): void;
-  stroke(path: Path2D): void;
-  drawFocusIfNeeded(element: Element): void;
-  drawFocusIfNeeded(path: Path2D, element: Element): void;
-  scrollPathIntoView(): void;
-  scrollPathIntoView(path: Path2D): void;
-  clip(fillRule?: CanvasFillRule): void;
-  clip(path: Path2D, fillRule?: CanvasFillRule): void;
-  resetClip(): void;
-  isPointInPath(x: number, y: number, fillRule?: CanvasFillRule): boolean;
-  isPointInPath(path: Path2D, x: number, y: number, fillRule?: CanvasFillRule): boolean;
-  isPointInStroke(x: number, y: number): boolean;
-  isPointInStroke(path: Path2D, x: number, y: number): boolean;
-
-  // text (see also the CanvasDrawingStyles interface)
-  fillText(text: string, x: number, y: number, maxWidth?: number): void;
-  strokeText(text: string, x: number, y: number, maxWidth?: number): void;
-  measureText(text: string): TextMetrics;
-
-  // drawing images
-  drawImage(image: CanvasImageSource, dx: number, dy: number): void;
-  drawImage(image: CanvasImageSource, dx: number, dy: number, dw: number, dh: number): void;
-  drawImage(image: CanvasImageSource, sx: number, sy: number, sw: number, sh: number, dx: number, dy: number, dw: number, dh: number): void;
-
-  // hit regions
-  addHitRegion(options?: HitRegionOptions): void;
-  removeHitRegion(id: string): void;
-  clearHitRegions(): void;
-
-  // pixel manipulation
-  createImageData(sw: number, sh: number): ImageData;
-  createImageData(imagedata: ImageData): ImageData;
-  getImageData(sx: number, sy: number, sw: number, sh: number): ImageData;
-  putImageData(imagedata: ImageData, dx: number, dy: number): void;
-  putImageData(imagedata: ImageData, dx: number, dy: number, dirtyX: number, dirtyY: number, dirtyWidth: number, dirtyHeight: number): void;
-
-  // CanvasDrawingStyles
-  // line caps/joins
-  lineWidth: number;
-  lineCap: string;
-  lineJoin: string;
-  miterLimit: number;
-
-  // dashed lines
-  setLineDash(segments: Array<number>): void;
-  getLineDash(): Array<number>;
-  lineDashOffset: number;
-
-  // text
-  font: string;
-  textAlign: string;
-  textBaseline: string;
-  direction: string;
-
-  // CanvasPathMethods
-  // shared path API methods
-  closePath(): void;
-  moveTo(x: number, y: number): void;
-  lineTo(x: number, y: number): void;
-  quadraticCurveTo(cpx: number, cpy: number, x: number, y: number): void;
-  bezierCurveTo(cp1x: number, cp1y: number, cp2x: number, cp2y: number, x: number, y: number): void;
-  arcTo(x1: number, y1: number, x2: number, y2: number, radius: number): void;
-  arcTo(x1: number, y1: number, x2: number, y2: number, radiusX: number, radiusY: number, rotation: number): void;
-  rect(x: number, y: number, w: number, h: number): void;
-  arc(x: number, y: number, radius: number, startAngle: number, endAngle: number, anticlockwise?: boolean): void;
-  ellipse(x: number, y: number, radiusX: number, radiusY: number, rotation: number, startAngle: number, endAngle: number, anticlockwise?: boolean): void;
-}
-
-
-// WebGL idl: https://www.khronos.org/registry/webgl/specs/latest/1.0/webgl.idl
-
-type WebGLContextAttributes = {
-       alpha: boolean,
-       depth: boolean,
-       stencil: boolean,
-       antialias: boolean,
-       premultipliedAlpha: boolean,
-       preserveDrawingBuffer: boolean,
-       preferLowPowerToHighPerformance: boolean,
-       failIfMajorPerformanceCaveat: boolean,
-       ...
-};
-
-interface WebGLObject {
-};
-
-interface WebGLBuffer extends WebGLObject {
-};
-
-interface WebGLFramebuffer extends WebGLObject {
-};
-
-interface WebGLProgram extends WebGLObject {
-};
-
-interface WebGLRenderbuffer extends WebGLObject {
-};
-
-interface WebGLShader extends WebGLObject {
-};
-
-interface WebGLTexture extends WebGLObject {
-};
-
-interface WebGLUniformLocation {
-};
-
-interface WebGLActiveInfo {
-    size: number;
-    type: number;
-    name: string;
-};
-
-interface WebGLShaderPrecisionFormat {
-  rangeMin: number;
-  rangeMax: number;
-  precision: number;
-};
-
-type BufferDataSource = ArrayBuffer | $ArrayBufferView;
-
-type TexImageSource =
-  ImageBitmap |
-  ImageData |
-  HTMLImageElement |
-  HTMLCanvasElement |
-  HTMLVideoElement;
-
-type VertexAttribFVSource =
-  Float32Array |
-  Array<number>;
-
-/* flow */
-declare class WebGLRenderingContext {
-  static DEPTH_BUFFER_BIT               : 0x00000100;
-         DEPTH_BUFFER_BIT               : 0x00000100;
-  static STENCIL_BUFFER_BIT             : 0x00000400;
-         STENCIL_BUFFER_BIT             : 0x00000400;
-  static COLOR_BUFFER_BIT               : 0x00004000;
-         COLOR_BUFFER_BIT               : 0x00004000;
-  static POINTS                         : 0x0000;
-         POINTS                         : 0x0000;
-  static LINES                          : 0x0001;
-         LINES                          : 0x0001;
-  static LINE_LOOP                      : 0x0002;
-         LINE_LOOP                      : 0x0002;
-  static LINE_STRIP                     : 0x0003;
-         LINE_STRIP                     : 0x0003;
-  static TRIANGLES                      : 0x0004;
-         TRIANGLES                      : 0x0004;
-  static TRIANGLE_STRIP                 : 0x0005;
-         TRIANGLE_STRIP                 : 0x0005;
-  static TRIANGLE_FAN                   : 0x0006;
-         TRIANGLE_FAN                   : 0x0006;
-  static ZERO                           : 0;
-         ZERO                           : 0;
-  static ONE                            : 1;
-         ONE                            : 1;
-  static SRC_COLOR                      : 0x0300;
-         SRC_COLOR                      : 0x0300;
-  static ONE_MINUS_SRC_COLOR            : 0x0301;
-         ONE_MINUS_SRC_COLOR            : 0x0301;
-  static SRC_ALPHA                      : 0x0302;
-         SRC_ALPHA                      : 0x0302;
-  static ONE_MINUS_SRC_ALPHA            : 0x0303;
-         ONE_MINUS_SRC_ALPHA            : 0x0303;
-  static DST_ALPHA                      : 0x0304;
-         DST_ALPHA                      : 0x0304;
-  static ONE_MINUS_DST_ALPHA            : 0x0305;
-         ONE_MINUS_DST_ALPHA            : 0x0305;
-  static DST_COLOR                      : 0x0306;
-         DST_COLOR                      : 0x0306;
-  static ONE_MINUS_DST_COLOR            : 0x0307;
-         ONE_MINUS_DST_COLOR            : 0x0307;
-  static SRC_ALPHA_SATURATE             : 0x0308;
-         SRC_ALPHA_SATURATE             : 0x0308;
-  static FUNC_ADD                       : 0x8006;
-         FUNC_ADD                       : 0x8006;
-  static BLEND_EQUATION                 : 0x8009;
-         BLEND_EQUATION                 : 0x8009;
-  static BLEND_EQUATION_RGB             : 0x8009;
-         BLEND_EQUATION_RGB             : 0x8009;
-  static BLEND_EQUATION_ALPHA           : 0x883D;
-         BLEND_EQUATION_ALPHA           : 0x883D;
-  static FUNC_SUBTRACT                  : 0x800A;
-         FUNC_SUBTRACT                  : 0x800A;
-  static FUNC_REVERSE_SUBTRACT          : 0x800B;
-         FUNC_REVERSE_SUBTRACT          : 0x800B;
-  static BLEND_DST_RGB                  : 0x80C8;
-         BLEND_DST_RGB                  : 0x80C8;
-  static BLEND_SRC_RGB                  : 0x80C9;
-         BLEND_SRC_RGB                  : 0x80C9;
-  static BLEND_DST_ALPHA                : 0x80CA;
-         BLEND_DST_ALPHA                : 0x80CA;
-  static BLEND_SRC_ALPHA                : 0x80CB;
-         BLEND_SRC_ALPHA                : 0x80CB;
-  static CONSTANT_COLOR                 : 0x8001;
-         CONSTANT_COLOR                 : 0x8001;
-  static ONE_MINUS_CONSTANT_COLOR       : 0x8002;
-         ONE_MINUS_CONSTANT_COLOR       : 0x8002;
-  static CONSTANT_ALPHA                 : 0x8003;
-         CONSTANT_ALPHA                 : 0x8003;
-  static ONE_MINUS_CONSTANT_ALPHA       : 0x8004;
-         ONE_MINUS_CONSTANT_ALPHA       : 0x8004;
-  static BLEND_COLOR                    : 0x8005;
-         BLEND_COLOR                    : 0x8005;
-  static ARRAY_BUFFER                   : 0x8892;
-         ARRAY_BUFFER                   : 0x8892;
-  static ELEMENT_ARRAY_BUFFER           : 0x8893;
-         ELEMENT_ARRAY_BUFFER           : 0x8893;
-  static ARRAY_BUFFER_BINDING           : 0x8894;
-         ARRAY_BUFFER_BINDING           : 0x8894;
-  static ELEMENT_ARRAY_BUFFER_BINDING   : 0x8895;
-         ELEMENT_ARRAY_BUFFER_BINDING   : 0x8895;
-  static STREAM_DRAW                    : 0x88E0;
-         STREAM_DRAW                    : 0x88E0;
-  static STATIC_DRAW                    : 0x88E4;
-         STATIC_DRAW                    : 0x88E4;
-  static DYNAMIC_DRAW                   : 0x88E8;
-         DYNAMIC_DRAW                   : 0x88E8;
-  static BUFFER_SIZE                    : 0x8764;
-         BUFFER_SIZE                    : 0x8764;
-  static BUFFER_USAGE                   : 0x8765;
-         BUFFER_USAGE                   : 0x8765;
-  static CURRENT_VERTEX_ATTRIB          : 0x8626;
-         CURRENT_VERTEX_ATTRIB          : 0x8626;
-  static FRONT                          : 0x0404;
-         FRONT                          : 0x0404;
-  static BACK                           : 0x0405;
-         BACK                           : 0x0405;
-  static FRONT_AND_BACK                 : 0x0408;
-         FRONT_AND_BACK                 : 0x0408;
-  static CULL_FACE                      : 0x0B44;
-         CULL_FACE                      : 0x0B44;
-  static BLEND                          : 0x0BE2;
-         BLEND                          : 0x0BE2;
-  static DITHER                         : 0x0BD0;
-         DITHER                         : 0x0BD0;
-  static STENCIL_TEST                   : 0x0B90;
-         STENCIL_TEST                   : 0x0B90;
-  static DEPTH_TEST                     : 0x0B71;
-         DEPTH_TEST                     : 0x0B71;
-  static SCISSOR_TEST                   : 0x0C11;
-         SCISSOR_TEST                   : 0x0C11;
-  static POLYGON_OFFSET_FILL            : 0x8037;
-         POLYGON_OFFSET_FILL            : 0x8037;
-  static SAMPLE_ALPHA_TO_COVERAGE       : 0x809E;
-         SAMPLE_ALPHA_TO_COVERAGE       : 0x809E;
-  static SAMPLE_COVERAGE                : 0x80A0;
-         SAMPLE_COVERAGE                : 0x80A0;
-  static NO_ERROR                       : 0;
-         NO_ERROR                       : 0;
-  static INVALID_ENUM                   : 0x0500;
-         INVALID_ENUM                   : 0x0500;
-  static INVALID_VALUE                  : 0x0501;
-         INVALID_VALUE                  : 0x0501;
-  static INVALID_OPERATION              : 0x0502;
-         INVALID_OPERATION              : 0x0502;
-  static OUT_OF_MEMORY                  : 0x0505;
-         OUT_OF_MEMORY                  : 0x0505;
-  static CW                             : 0x0900;
-         CW                             : 0x0900;
-  static CCW                            : 0x0901;
-         CCW                            : 0x0901;
-  static LINE_WIDTH                     : 0x0B21;
-         LINE_WIDTH                     : 0x0B21;
-  static ALIASED_POINT_SIZE_RANGE       : 0x846D;
-         ALIASED_POINT_SIZE_RANGE       : 0x846D;
-  static ALIASED_LINE_WIDTH_RANGE       : 0x846E;
-         ALIASED_LINE_WIDTH_RANGE       : 0x846E;
-  static CULL_FACE_MODE                 : 0x0B45;
-         CULL_FACE_MODE                 : 0x0B45;
-  static FRONT_FACE                     : 0x0B46;
-         FRONT_FACE                     : 0x0B46;
-  static DEPTH_RANGE                    : 0x0B70;
-         DEPTH_RANGE                    : 0x0B70;
-  static DEPTH_WRITEMASK                : 0x0B72;
-         DEPTH_WRITEMASK                : 0x0B72;
-  static DEPTH_CLEAR_VALUE              : 0x0B73;
-         DEPTH_CLEAR_VALUE              : 0x0B73;
-  static DEPTH_FUNC                     : 0x0B74;
-         DEPTH_FUNC                     : 0x0B74;
-  static STENCIL_CLEAR_VALUE            : 0x0B91;
-         STENCIL_CLEAR_VALUE            : 0x0B91;
-  static STENCIL_FUNC                   : 0x0B92;
-         STENCIL_FUNC                   : 0x0B92;
-  static STENCIL_FAIL                   : 0x0B94;
-         STENCIL_FAIL                   : 0x0B94;
-  static STENCIL_PASS_DEPTH_FAIL        : 0x0B95;
-         STENCIL_PASS_DEPTH_FAIL        : 0x0B95;
-  static STENCIL_PASS_DEPTH_PASS        : 0x0B96;
-         STENCIL_PASS_DEPTH_PASS        : 0x0B96;
-  static STENCIL_REF                    : 0x0B97;
-         STENCIL_REF                    : 0x0B97;
-  static STENCIL_VALUE_MASK             : 0x0B93;
-         STENCIL_VALUE_MASK             : 0x0B93;
-  static STENCIL_WRITEMASK              : 0x0B98;
-         STENCIL_WRITEMASK              : 0x0B98;
-  static STENCIL_BACK_FUNC              : 0x8800;
-         STENCIL_BACK_FUNC              : 0x8800;
-  static STENCIL_BACK_FAIL              : 0x8801;
-         STENCIL_BACK_FAIL              : 0x8801;
-  static STENCIL_BACK_PASS_DEPTH_FAIL   : 0x8802;
-         STENCIL_BACK_PASS_DEPTH_FAIL   : 0x8802;
-  static STENCIL_BACK_PASS_DEPTH_PASS   : 0x8803;
-         STENCIL_BACK_PASS_DEPTH_PASS   : 0x8803;
-  static STENCIL_BACK_REF               : 0x8CA3;
-         STENCIL_BACK_REF               : 0x8CA3;
-  static STENCIL_BACK_VALUE_MASK        : 0x8CA4;
-         STENCIL_BACK_VALUE_MASK        : 0x8CA4;
-  static STENCIL_BACK_WRITEMASK         : 0x8CA5;
-         STENCIL_BACK_WRITEMASK         : 0x8CA5;
-  static VIEWPORT                       : 0x0BA2;
-         VIEWPORT                       : 0x0BA2;
-  static SCISSOR_BOX                    : 0x0C10;
-         SCISSOR_BOX                    : 0x0C10;
-  static COLOR_CLEAR_VALUE              : 0x0C22;
-         COLOR_CLEAR_VALUE              : 0x0C22;
-  static COLOR_WRITEMASK                : 0x0C23;
-         COLOR_WRITEMASK                : 0x0C23;
-  static UNPACK_ALIGNMENT               : 0x0CF5;
-         UNPACK_ALIGNMENT               : 0x0CF5;
-  static PACK_ALIGNMENT                 : 0x0D05;
-         PACK_ALIGNMENT                 : 0x0D05;
-  static MAX_TEXTURE_SIZE               : 0x0D33;
-         MAX_TEXTURE_SIZE               : 0x0D33;
-  static MAX_VIEWPORT_DIMS              : 0x0D3A;
-         MAX_VIEWPORT_DIMS              : 0x0D3A;
-  static SUBPIXEL_BITS                  : 0x0D50;
-         SUBPIXEL_BITS                  : 0x0D50;
-  static RED_BITS                       : 0x0D52;
-         RED_BITS                       : 0x0D52;
-  static GREEN_BITS                     : 0x0D53;
-         GREEN_BITS                     : 0x0D53;
-  static BLUE_BITS                      : 0x0D54;
-         BLUE_BITS                      : 0x0D54;
-  static ALPHA_BITS                     : 0x0D55;
-         ALPHA_BITS                     : 0x0D55;
-  static DEPTH_BITS                     : 0x0D56;
-         DEPTH_BITS                     : 0x0D56;
-  static STENCIL_BITS                   : 0x0D57;
-         STENCIL_BITS                   : 0x0D57;
-  static POLYGON_OFFSET_UNITS           : 0x2A00;
-         POLYGON_OFFSET_UNITS           : 0x2A00;
-  static POLYGON_OFFSET_FACTOR          : 0x8038;
-         POLYGON_OFFSET_FACTOR          : 0x8038;
-  static TEXTURE_BINDING_2D             : 0x8069;
-         TEXTURE_BINDING_2D             : 0x8069;
-  static SAMPLE_BUFFERS                 : 0x80A8;
-         SAMPLE_BUFFERS                 : 0x80A8;
-  static SAMPLES                        : 0x80A9;
-         SAMPLES                        : 0x80A9;
-  static SAMPLE_COVERAGE_VALUE          : 0x80AA;
-         SAMPLE_COVERAGE_VALUE          : 0x80AA;
-  static SAMPLE_COVERAGE_INVERT         : 0x80AB;
-         SAMPLE_COVERAGE_INVERT         : 0x80AB;
-  static COMPRESSED_TEXTURE_FORMATS     : 0x86A3;
-         COMPRESSED_TEXTURE_FORMATS     : 0x86A3;
-  static DONT_CARE                      : 0x1100;
-         DONT_CARE                      : 0x1100;
-  static FASTEST                        : 0x1101;
-         FASTEST                        : 0x1101;
-  static NICEST                         : 0x1102;
-         NICEST                         : 0x1102;
-  static GENERATE_MIPMAP_HINT            : 0x8192;
-         GENERATE_MIPMAP_HINT            : 0x8192;
-  static BYTE                           : 0x1400;
-         BYTE                           : 0x1400;
-  static UNSIGNED_BYTE                  : 0x1401;
-         UNSIGNED_BYTE                  : 0x1401;
-  static SHORT                          : 0x1402;
-         SHORT                          : 0x1402;
-  static UNSIGNED_SHORT                 : 0x1403;
-         UNSIGNED_SHORT                 : 0x1403;
-  static INT                            : 0x1404;
-         INT                            : 0x1404;
-  static UNSIGNED_INT                   : 0x1405;
-         UNSIGNED_INT                   : 0x1405;
-  static FLOAT                          : 0x1406;
-         FLOAT                          : 0x1406;
-  static DEPTH_COMPONENT                : 0x1902;
-         DEPTH_COMPONENT                : 0x1902;
-  static ALPHA                          : 0x1906;
-         ALPHA                          : 0x1906;
-  static RGB                            : 0x1907;
-         RGB                            : 0x1907;
-  static RGBA                           : 0x1908;
-         RGBA                           : 0x1908;
-  static LUMINANCE                      : 0x1909;
-         LUMINANCE                      : 0x1909;
-  static LUMINANCE_ALPHA                : 0x190A;
-         LUMINANCE_ALPHA                : 0x190A;
-  static UNSIGNED_SHORT_4_4_4_4         : 0x8033;
-         UNSIGNED_SHORT_4_4_4_4         : 0x8033;
-  static UNSIGNED_SHORT_5_5_5_1         : 0x8034;
-         UNSIGNED_SHORT_5_5_5_1         : 0x8034;
-  static UNSIGNED_SHORT_5_6_5           : 0x8363;
-         UNSIGNED_SHORT_5_6_5           : 0x8363;
-  static FRAGMENT_SHADER                  : 0x8B30;
-         FRAGMENT_SHADER                  : 0x8B30;
-  static VERTEX_SHADER                    : 0x8B31;
-         VERTEX_SHADER                    : 0x8B31;
-  static MAX_VERTEX_ATTRIBS               : 0x8869;
-         MAX_VERTEX_ATTRIBS               : 0x8869;
-  static MAX_VERTEX_UNIFORM_VECTORS       : 0x8DFB;
-         MAX_VERTEX_UNIFORM_VECTORS       : 0x8DFB;
-  static MAX_VARYING_VECTORS              : 0x8DFC;
-         MAX_VARYING_VECTORS              : 0x8DFC;
-  static MAX_COMBINED_TEXTURE_IMAGE_UNITS : 0x8B4D;
-         MAX_COMBINED_TEXTURE_IMAGE_UNITS : 0x8B4D;
-  static MAX_VERTEX_TEXTURE_IMAGE_UNITS   : 0x8B4C;
-         MAX_VERTEX_TEXTURE_IMAGE_UNITS   : 0x8B4C;
-  static MAX_TEXTURE_IMAGE_UNITS          : 0x8872;
-         MAX_TEXTURE_IMAGE_UNITS          : 0x8872;
-  static MAX_FRAGMENT_UNIFORM_VECTORS     : 0x8DFD;
-         MAX_FRAGMENT_UNIFORM_VECTORS     : 0x8DFD;
-  static SHADER_TYPE                      : 0x8B4F;
-         SHADER_TYPE                      : 0x8B4F;
-  static DELETE_STATUS                    : 0x8B80;
-         DELETE_STATUS                    : 0x8B80;
-  static LINK_STATUS                      : 0x8B82;
-         LINK_STATUS                      : 0x8B82;
-  static VALIDATE_STATUS                  : 0x8B83;
-         VALIDATE_STATUS                  : 0x8B83;
-  static ATTACHED_SHADERS                 : 0x8B85;
-         ATTACHED_SHADERS                 : 0x8B85;
-  static ACTIVE_UNIFORMS                  : 0x8B86;
-         ACTIVE_UNIFORMS                  : 0x8B86;
-  static ACTIVE_ATTRIBUTES                : 0x8B89;
-         ACTIVE_ATTRIBUTES                : 0x8B89;
-  static SHADING_LANGUAGE_VERSION         : 0x8B8C;
-         SHADING_LANGUAGE_VERSION         : 0x8B8C;
-  static CURRENT_PROGRAM                  : 0x8B8D;
-         CURRENT_PROGRAM                  : 0x8B8D;
-  static NEVER                          : 0x0200;
-         NEVER                          : 0x0200;
-  static LESS                           : 0x0201;
-         LESS                           : 0x0201;
-  static EQUAL                          : 0x0202;
-         EQUAL                          : 0x0202;
-  static LEQUAL                         : 0x0203;
-         LEQUAL                         : 0x0203;
-  static GREATER                        : 0x0204;
-         GREATER                        : 0x0204;
-  static NOTEQUAL                       : 0x0205;
-         NOTEQUAL                       : 0x0205;
-  static GEQUAL                         : 0x0206;
-         GEQUAL                         : 0x0206;
-  static ALWAYS                         : 0x0207;
-         ALWAYS                         : 0x0207;
-  static KEEP                           : 0x1E00;
-         KEEP                           : 0x1E00;
-  static REPLACE                        : 0x1E01;
-         REPLACE                        : 0x1E01;
-  static INCR                           : 0x1E02;
-         INCR                           : 0x1E02;
-  static DECR                           : 0x1E03;
-         DECR                           : 0x1E03;
-  static INVERT                         : 0x150A;
-         INVERT                         : 0x150A;
-  static INCR_WRAP                      : 0x8507;
-         INCR_WRAP                      : 0x8507;
-  static DECR_WRAP                      : 0x8508;
-         DECR_WRAP                      : 0x8508;
-  static VENDOR                         : 0x1F00;
-         VENDOR                         : 0x1F00;
-  static RENDERER                       : 0x1F01;
-         RENDERER                       : 0x1F01;
-  static VERSION                        : 0x1F02;
-         VERSION                        : 0x1F02;
-  static NEAREST                        : 0x2600;
-         NEAREST                        : 0x2600;
-  static LINEAR                         : 0x2601;
-         LINEAR                         : 0x2601;
-  static NEAREST_MIPMAP_NEAREST         : 0x2700;
-         NEAREST_MIPMAP_NEAREST         : 0x2700;
-  static LINEAR_MIPMAP_NEAREST          : 0x2701;
-         LINEAR_MIPMAP_NEAREST          : 0x2701;
-  static NEAREST_MIPMAP_LINEAR          : 0x2702;
-         NEAREST_MIPMAP_LINEAR          : 0x2702;
-  static LINEAR_MIPMAP_LINEAR           : 0x2703;
-         LINEAR_MIPMAP_LINEAR           : 0x2703;
-  static TEXTURE_MAG_FILTER             : 0x2800;
-         TEXTURE_MAG_FILTER             : 0x2800;
-  static TEXTURE_MIN_FILTER             : 0x2801;
-         TEXTURE_MIN_FILTER             : 0x2801;
-  static TEXTURE_WRAP_S                 : 0x2802;
-         TEXTURE_WRAP_S                 : 0x2802;
-  static TEXTURE_WRAP_T                 : 0x2803;
-         TEXTURE_WRAP_T                 : 0x2803;
-  static TEXTURE_2D                     : 0x0DE1;
-         TEXTURE_2D                     : 0x0DE1;
-  static TEXTURE                        : 0x1702;
-         TEXTURE                        : 0x1702;
-  static TEXTURE_CUBE_MAP               : 0x8513;
-         TEXTURE_CUBE_MAP               : 0x8513;
-  static TEXTURE_BINDING_CUBE_MAP       : 0x8514;
-         TEXTURE_BINDING_CUBE_MAP       : 0x8514;
-  static TEXTURE_CUBE_MAP_POSITIVE_X    : 0x8515;
-         TEXTURE_CUBE_MAP_POSITIVE_X    : 0x8515;
-  static TEXTURE_CUBE_MAP_NEGATIVE_X    : 0x8516;
-         TEXTURE_CUBE_MAP_NEGATIVE_X    : 0x8516;
-  static TEXTURE_CUBE_MAP_POSITIVE_Y    : 0x8517;
-         TEXTURE_CUBE_MAP_POSITIVE_Y    : 0x8517;
-  static TEXTURE_CUBE_MAP_NEGATIVE_Y    : 0x8518;
-         TEXTURE_CUBE_MAP_NEGATIVE_Y    : 0x8518;
-  static TEXTURE_CUBE_MAP_POSITIVE_Z    : 0x8519;
-         TEXTURE_CUBE_MAP_POSITIVE_Z    : 0x8519;
-  static TEXTURE_CUBE_MAP_NEGATIVE_Z    : 0x851A;
-         TEXTURE_CUBE_MAP_NEGATIVE_Z    : 0x851A;
-  static MAX_CUBE_MAP_TEXTURE_SIZE      : 0x851C;
-         MAX_CUBE_MAP_TEXTURE_SIZE      : 0x851C;
-  static TEXTURE0                       : 0x84C0;
-         TEXTURE0                       : 0x84C0;
-  static TEXTURE1                       : 0x84C1;
-         TEXTURE1                       : 0x84C1;
-  static TEXTURE2                       : 0x84C2;
-         TEXTURE2                       : 0x84C2;
-  static TEXTURE3                       : 0x84C3;
-         TEXTURE3                       : 0x84C3;
-  static TEXTURE4                       : 0x84C4;
-         TEXTURE4                       : 0x84C4;
-  static TEXTURE5                       : 0x84C5;
-         TEXTURE5                       : 0x84C5;
-  static TEXTURE6                       : 0x84C6;
-         TEXTURE6                       : 0x84C6;
-  static TEXTURE7                       : 0x84C7;
-         TEXTURE7                       : 0x84C7;
-  static TEXTURE8                       : 0x84C8;
-         TEXTURE8                       : 0x84C8;
-  static TEXTURE9                       : 0x84C9;
-         TEXTURE9                       : 0x84C9;
-  static TEXTURE10                      : 0x84CA;
-         TEXTURE10                      : 0x84CA;
-  static TEXTURE11                      : 0x84CB;
-         TEXTURE11                      : 0x84CB;
-  static TEXTURE12                      : 0x84CC;
-         TEXTURE12                      : 0x84CC;
-  static TEXTURE13                      : 0x84CD;
-         TEXTURE13                      : 0x84CD;
-  static TEXTURE14                      : 0x84CE;
-         TEXTURE14                      : 0x84CE;
-  static TEXTURE15                      : 0x84CF;
-         TEXTURE15                      : 0x84CF;
-  static TEXTURE16                      : 0x84D0;
-         TEXTURE16                      : 0x84D0;
-  static TEXTURE17                      : 0x84D1;
-         TEXTURE17                      : 0x84D1;
-  static TEXTURE18                      : 0x84D2;
-         TEXTURE18                      : 0x84D2;
-  static TEXTURE19                      : 0x84D3;
-         TEXTURE19                      : 0x84D3;
-  static TEXTURE20                      : 0x84D4;
-         TEXTURE20                      : 0x84D4;
-  static TEXTURE21                      : 0x84D5;
-         TEXTURE21                      : 0x84D5;
-  static TEXTURE22                      : 0x84D6;
-         TEXTURE22                      : 0x84D6;
-  static TEXTURE23                      : 0x84D7;
-         TEXTURE23                      : 0x84D7;
-  static TEXTURE24                      : 0x84D8;
-         TEXTURE24                      : 0x84D8;
-  static TEXTURE25                      : 0x84D9;
-         TEXTURE25                      : 0x84D9;
-  static TEXTURE26                      : 0x84DA;
-         TEXTURE26                      : 0x84DA;
-  static TEXTURE27                      : 0x84DB;
-         TEXTURE27                      : 0x84DB;
-  static TEXTURE28                      : 0x84DC;
-         TEXTURE28                      : 0x84DC;
-  static TEXTURE29                      : 0x84DD;
-         TEXTURE29                      : 0x84DD;
-  static TEXTURE30                      : 0x84DE;
-         TEXTURE30                      : 0x84DE;
-  static TEXTURE31                      : 0x84DF;
-         TEXTURE31                      : 0x84DF;
-  static ACTIVE_TEXTURE                 : 0x84E0;
-         ACTIVE_TEXTURE                 : 0x84E0;
-  static REPEAT                         : 0x2901;
-         REPEAT                         : 0x2901;
-  static CLAMP_TO_EDGE                  : 0x812F;
-         CLAMP_TO_EDGE                  : 0x812F;
-  static MIRRORED_REPEAT                : 0x8370;
-         MIRRORED_REPEAT                : 0x8370;
-  static FLOAT_VEC2                     : 0x8B50;
-         FLOAT_VEC2                     : 0x8B50;
-  static FLOAT_VEC3                     : 0x8B51;
-         FLOAT_VEC3                     : 0x8B51;
-  static FLOAT_VEC4                     : 0x8B52;
-         FLOAT_VEC4                     : 0x8B52;
-  static INT_VEC2                       : 0x8B53;
-         INT_VEC2                       : 0x8B53;
-  static INT_VEC3                       : 0x8B54;
-         INT_VEC3                       : 0x8B54;
-  static INT_VEC4                       : 0x8B55;
-         INT_VEC4                       : 0x8B55;
-  static BOOL                           : 0x8B56;
-         BOOL                           : 0x8B56;
-  static BOOL_VEC2                      : 0x8B57;
-         BOOL_VEC2                      : 0x8B57;
-  static BOOL_VEC3                      : 0x8B58;
-         BOOL_VEC3                      : 0x8B58;
-  static BOOL_VEC4                      : 0x8B59;
-         BOOL_VEC4                      : 0x8B59;
-  static FLOAT_MAT2                     : 0x8B5A;
-         FLOAT_MAT2                     : 0x8B5A;
-  static FLOAT_MAT3                     : 0x8B5B;
-         FLOAT_MAT3                     : 0x8B5B;
-  static FLOAT_MAT4                     : 0x8B5C;
-         FLOAT_MAT4                     : 0x8B5C;
-  static SAMPLER_2D                     : 0x8B5E;
-         SAMPLER_2D                     : 0x8B5E;
-  static SAMPLER_CUBE                   : 0x8B60;
-         SAMPLER_CUBE                   : 0x8B60;
-  static VERTEX_ATTRIB_ARRAY_ENABLED        : 0x8622;
-         VERTEX_ATTRIB_ARRAY_ENABLED        : 0x8622;
-  static VERTEX_ATTRIB_ARRAY_SIZE           : 0x8623;
-         VERTEX_ATTRIB_ARRAY_SIZE           : 0x8623;
-  static VERTEX_ATTRIB_ARRAY_STRIDE         : 0x8624;
-         VERTEX_ATTRIB_ARRAY_STRIDE         : 0x8624;
-  static VERTEX_ATTRIB_ARRAY_TYPE           : 0x8625;
-         VERTEX_ATTRIB_ARRAY_TYPE           : 0x8625;
-  static VERTEX_ATTRIB_ARRAY_NORMALIZED     : 0x886A;
-         VERTEX_ATTRIB_ARRAY_NORMALIZED     : 0x886A;
-  static VERTEX_ATTRIB_ARRAY_POINTER        : 0x8645;
-         VERTEX_ATTRIB_ARRAY_POINTER        : 0x8645;
-  static VERTEX_ATTRIB_ARRAY_BUFFER_BINDING : 0x889F;
-         VERTEX_ATTRIB_ARRAY_BUFFER_BINDING : 0x889F;
-  static IMPLEMENTATION_COLOR_READ_TYPE   : 0x8B9A;
-         IMPLEMENTATION_COLOR_READ_TYPE   : 0x8B9A;
-  static IMPLEMENTATION_COLOR_READ_FORMAT : 0x8B9B;
-         IMPLEMENTATION_COLOR_READ_FORMAT : 0x8B9B;
-  static COMPILE_STATUS                 : 0x8B81;
-         COMPILE_STATUS                 : 0x8B81;
-  static LOW_FLOAT                      : 0x8DF0;
-         LOW_FLOAT                      : 0x8DF0;
-  static MEDIUM_FLOAT                   : 0x8DF1;
-         MEDIUM_FLOAT                   : 0x8DF1;
-  static HIGH_FLOAT                     : 0x8DF2;
-         HIGH_FLOAT                     : 0x8DF2;
-  static LOW_INT                        : 0x8DF3;
-         LOW_INT                        : 0x8DF3;
-  static MEDIUM_INT                     : 0x8DF4;
-         MEDIUM_INT                     : 0x8DF4;
-  static HIGH_INT                       : 0x8DF5;
-         HIGH_INT                       : 0x8DF5;
-  static FRAMEBUFFER                    : 0x8D40;
-         FRAMEBUFFER                    : 0x8D40;
-  static RENDERBUFFER                   : 0x8D41;
-         RENDERBUFFER                   : 0x8D41;
-  static RGBA4                          : 0x8056;
-         RGBA4                          : 0x8056;
-  static RGB5_A1                        : 0x8057;
-         RGB5_A1                        : 0x8057;
-  static RGB565                         : 0x8D62;
-         RGB565                         : 0x8D62;
-  static DEPTH_COMPONENT16              : 0x81A5;
-         DEPTH_COMPONENT16              : 0x81A5;
-  static STENCIL_INDEX                  : 0x1901;
-         STENCIL_INDEX                  : 0x1901;
-  static STENCIL_INDEX8                 : 0x8D48;
-         STENCIL_INDEX8                 : 0x8D48;
-  static DEPTH_STENCIL                  : 0x84F9;
-         DEPTH_STENCIL                  : 0x84F9;
-  static RENDERBUFFER_WIDTH             : 0x8D42;
-         RENDERBUFFER_WIDTH             : 0x8D42;
-  static RENDERBUFFER_HEIGHT            : 0x8D43;
-         RENDERBUFFER_HEIGHT            : 0x8D43;
-  static RENDERBUFFER_INTERNAL_FORMAT   : 0x8D44;
-         RENDERBUFFER_INTERNAL_FORMAT   : 0x8D44;
-  static RENDERBUFFER_RED_SIZE          : 0x8D50;
-         RENDERBUFFER_RED_SIZE          : 0x8D50;
-  static RENDERBUFFER_GREEN_SIZE        : 0x8D51;
-         RENDERBUFFER_GREEN_SIZE        : 0x8D51;
-  static RENDERBUFFER_BLUE_SIZE         : 0x8D52;
-         RENDERBUFFER_BLUE_SIZE         : 0x8D52;
-  static RENDERBUFFER_ALPHA_SIZE        : 0x8D53;
-         RENDERBUFFER_ALPHA_SIZE        : 0x8D53;
-  static RENDERBUFFER_DEPTH_SIZE        : 0x8D54;
-         RENDERBUFFER_DEPTH_SIZE        : 0x8D54;
-  static RENDERBUFFER_STENCIL_SIZE      : 0x8D55;
-         RENDERBUFFER_STENCIL_SIZE      : 0x8D55;
-  static FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE           : 0x8CD0;
-         FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE           : 0x8CD0;
-  static FRAMEBUFFER_ATTACHMENT_OBJECT_NAME           : 0x8CD1;
-         FRAMEBUFFER_ATTACHMENT_OBJECT_NAME           : 0x8CD1;
-  static FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL         : 0x8CD2;
-         FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL         : 0x8CD2;
-  static FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE : 0x8CD3;
-         FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE : 0x8CD3;
-  static COLOR_ATTACHMENT0              : 0x8CE0;
-         COLOR_ATTACHMENT0              : 0x8CE0;
-  static DEPTH_ATTACHMENT               : 0x8D00;
-         DEPTH_ATTACHMENT               : 0x8D00;
-  static STENCIL_ATTACHMENT             : 0x8D20;
-         STENCIL_ATTACHMENT             : 0x8D20;
-  static DEPTH_STENCIL_ATTACHMENT       : 0x821A;
-         DEPTH_STENCIL_ATTACHMENT       : 0x821A;
-  static NONE                           : 0;
-         NONE                           : 0;
-  static FRAMEBUFFER_COMPLETE                      : 0x8CD5;
-         FRAMEBUFFER_COMPLETE                      : 0x8CD5;
-  static FRAMEBUFFER_INCOMPLETE_ATTACHMENT         : 0x8CD6;
-         FRAMEBUFFER_INCOMPLETE_ATTACHMENT         : 0x8CD6;
-  static FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT : 0x8CD7;
-         FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT : 0x8CD7;
-  static FRAMEBUFFER_INCOMPLETE_DIMENSIONS         : 0x8CD9;
-         FRAMEBUFFER_INCOMPLETE_DIMENSIONS         : 0x8CD9;
-  static FRAMEBUFFER_UNSUPPORTED                   : 0x8CDD;
-         FRAMEBUFFER_UNSUPPORTED                   : 0x8CDD;
-  static FRAMEBUFFER_BINDING            : 0x8CA6;
-         FRAMEBUFFER_BINDING            : 0x8CA6;
-  static RENDERBUFFER_BINDING           : 0x8CA7;
-         RENDERBUFFER_BINDING           : 0x8CA7;
-  static MAX_RENDERBUFFER_SIZE          : 0x84E8;
-         MAX_RENDERBUFFER_SIZE          : 0x84E8;
-  static INVALID_FRAMEBUFFER_OPERATION  : 0x0506;
-         INVALID_FRAMEBUFFER_OPERATION  : 0x0506;
-  static UNPACK_FLIP_Y_WEBGL            : 0x9240;
-         UNPACK_FLIP_Y_WEBGL            : 0x9240;
-  static UNPACK_PREMULTIPLY_ALPHA_WEBGL : 0x9241;
-         UNPACK_PREMULTIPLY_ALPHA_WEBGL : 0x9241;
-  static CONTEXT_LOST_WEBGL             : 0x9242;
-         CONTEXT_LOST_WEBGL             : 0x9242;
-  static UNPACK_COLORSPACE_CONVERSION_WEBGL : 0x9243;
-         UNPACK_COLORSPACE_CONVERSION_WEBGL : 0x9243;
-  static BROWSER_DEFAULT_WEBGL          : 0x9244;
-         BROWSER_DEFAULT_WEBGL          : 0x9244;
-
-  canvas: HTMLCanvasElement;
-  drawingBufferWidth: number;
-  drawingBufferHeight: number;
-
-  getContextAttributes(): ?WebGLContextAttributes;
-  isContextLost(): boolean;
-
-  getSupportedExtensions(): ?Array<string>;
-  getExtension(name: string): any;
-
-  activeTexture(texture: number): void;
-  attachShader(program: WebGLProgram, shader: WebGLShader): void;
-  bindAttribLocation(program: WebGLProgram, index: number, name: string): void;
-  bindBuffer(target: number, buffer: ?WebGLBuffer): void;
-  bindFramebuffer(target: number, framebuffer: ?WebGLFramebuffer): void;
-  bindRenderbuffer(target: number, renderbuffer: ?WebGLRenderbuffer): void;
-  bindTexture(target: number, texture: ?WebGLTexture): void;
-  blendColor(red: number, green: number, blue: number, alpha: number): void;
-  blendEquation(mode: number): void;
-  blendEquationSeparate(modeRGB: number, modeAlpha: number): void;
-  blendFunc(sfactor: number, dfactor: number): void;
-  blendFuncSeparate(srcRGB: number, dstRGB: number, srcAlpha: number, dstAlpha: number): void;
-
-  bufferData(target: number, size: number, usage: number): void;
-  bufferData(target: number, data: ?ArrayBuffer, usage: number): void;
-  bufferData(target: number, data: $ArrayBufferView, usage: number): void;
-  bufferSubData(target: number, offset: number, data: BufferDataSource): void;
-
-  checkFramebufferStatus(target: number): number;
-  clear(mask: number): void;
-  clearColor(red: number, green: number, blue: number, alpha: number): void;
-  clearDepth(depth: number): void;
-  clearStencil(s: number): void;
-  colorMask(red: boolean, green: boolean, blue: boolean, alpha: boolean): void;
-  compileShader(shader: WebGLShader): void;
-
-  compressedTexImage2D(target: number, level: number, internalformat: number,
-                       width: number, height: number, border: number,
-                       data: $ArrayBufferView): void;
-
-  compressedTexSubImage2D(target: number, level: number,
-                          xoffset: number, yoffset: number,
-                          width: number, height: number, format: number,
-                          data: $ArrayBufferView): void;
-
-  copyTexImage2D(target: number, level: number, internalformat: number,
-                x: number, y: number, width: number, height: number,
-                border: number): void;
-  copyTexSubImage2D(target: number, level: number, xoffset: number, yoffset: number,
-                    x: number, y: number, width: number, height: number): void;
-
-  createBuffer(): ?WebGLBuffer;
-  createFramebuffer(): ?WebGLFramebuffer;
-  createProgram(): ?WebGLProgram;
-  createRenderbuffer(): ?WebGLRenderbuffer;
-  createShader(type: number): ?WebGLShader;
-  createTexture(): ?WebGLTexture;
-
-  cullFace(mode: number): void;
-
-  deleteBuffer(buffer: ?WebGLBuffer): void;
-  deleteFramebuffer(framebuffer: ?WebGLFramebuffer): void;
-  deleteProgram(program: ?WebGLProgram): void;
-  deleteRenderbuffer(renderbuffer: ?WebGLRenderbuffer): void;
-  deleteShader(shader: ?WebGLShader): void;
-  deleteTexture(texture: ?WebGLTexture): void;
-
-  depthFunc(func: number): void;
-  depthMask(flag: boolean): void;
-  depthRange(zNear: number, zFar: number): void;
-  detachShader(program: WebGLProgram, shader: WebGLShader): void;
-  disable(cap: number): void;
-  disableVertexAttribArray(index: number): void;
-  drawArrays(mode: number, first: number, count: number): void;
-  drawElements(mode: number, count: number, type: number, offset: number): void;
-
-  enable(cap: number): void;
-  enableVertexAttribArray(index: number): void;
-  finish(): void;
-  flush(): void;
-  framebufferRenderbuffer(target: number, attachment: number,
-                          renderbuffertarget: number,
-                          renderbuffer: ?WebGLRenderbuffer): void;
-  framebufferTexture2D(target: number, attachment: number, textarget: number,
-                       texture: ?WebGLTexture, level: number): void;
-  frontFace(mode: number): void;
-
-  generateMipmap(target: number): void;
-
-  getActiveAttrib(program: WebGLProgram, index: number): ?WebGLActiveInfo;
-  getActiveUniform(program: WebGLProgram, index: number): ?WebGLActiveInfo;
-  getAttachedShaders(program: WebGLProgram): ?Array<WebGLShader>;
-
-  getAttribLocation(program: WebGLProgram, name: string): number;
-
-  getBufferParameter(target: number, pname: number): any;
-  getParameter(pname: number): any;
-
-  getError(): number;
-
-  getFramebufferAttachmentParameter(target: number, attachment: number,
-                                    pname: number): any;
-  getProgramParameter(program: WebGLProgram, pname: number): any;
-  getProgramInfoLog(program: WebGLProgram): ?string;
-  getRenderbufferParameter(target: number, pname: number): any;
-  getShaderParameter(shader: WebGLShader, pname: number): any;
-  getShaderPrecisionFormat(shadertype: number, precisiontype: number): ?WebGLShaderPrecisionFormat;
-  getShaderInfoLog(shader: WebGLShader): ?string;
-
-  getShaderSource(shader: WebGLShader): ?string;
-
-  getTexParameter(target: number, pname: number): any;
-
-  getUniform(program: WebGLProgram, location: WebGLUniformLocation): any;
-
-  getUniformLocation(program: WebGLProgram, name: string): ?WebGLUniformLocation;
-
-  getVertexAttrib(index: number, pname: number): any;
-
-  getVertexAttribOffset(index: number, pname: number): number;
-
-  hint(target: number, mode: number): void;
-  isBuffer(buffer: ?WebGLBuffer): boolean;
-  isEnabled(cap: number): boolean;
-  isFramebuffer(framebuffer: ?WebGLFramebuffer): boolean;
-  isProgram(program: ?WebGLProgram): boolean;
-  isRenderbuffer(renderbuffer: ?WebGLRenderbuffer): boolean;
-  isShader(shader: ?WebGLShader): boolean;
-  isTexture(texture: ?WebGLTexture): boolean;
-  lineWidth(width: number): void;
-  linkProgram(program: WebGLProgram): void;
-  pixelStorei(pname: number, param: number): void;
-  polygonOffset(factor: number, units: number): void;
-
-  readPixels(x: number, y: number, width: number, height: number,
-             format: number, type: number, pixels: ?$ArrayBufferView): void;
-
-  renderbufferStorage(target: number, internalformat: number,
-                           width: number, height: number): void;
-  sampleCoverage(value: number, invert: boolean): void;
-  scissor(x: number, y: number, width: number, height: number): void;
-
-  shaderSource(shader: WebGLShader, source: string): void;
-
-  stencilFunc(func: number, ref: number, mask: number): void;
-  stencilFuncSeparate(face: number, func: number, ref: number, mask: number): void;
-  stencilMask(mask: number): void;
-  stencilMaskSeparate(face: number, mask: number): void;
-  stencilOp(fail: number, zfail: number, zpass: number): void;
-  stencilOpSeparate(face: number, fail: number, zfail: number, zpass: number): void;
-
-  texImage2D(target: number, level: number, internalformat: number,
-             width: number, height: number, border: number, format: number,
-             type: number, pixels: ?$ArrayBufferView): void;
-  texImage2D(target: number, level: number, internalformat: number,
-             format: number, type: number, source: TexImageSource): void;
-
-  texParameterf(target: number, pname: number, param: number): void;
-  texParameteri(target: number, pname: number, param: number): void;
-
-  texSubImage2D(target: number, level: number, xoffset: number, yoffset: number,
-                width: number, height: number,
-                format: number, type: number, pixels: ?$ArrayBufferView): void;
-  texSubImage2D(target: number, level: number, xoffset: number, yoffset: number,
-                format: number, type: number, source: TexImageSource): void;
-
-  uniform1f(location: ?WebGLUniformLocation, x: number): void;
-  uniform1fv(location: ?WebGLUniformLocation, v: Float32Array): void;
-  uniform1fv(location: ?WebGLUniformLocation, v: Array<number>): void;
-  uniform1fv(location: ?WebGLUniformLocation, v: [number]): void;
-  uniform1i(location: ?WebGLUniformLocation, x: number): void;
-  uniform1iv(location: ?WebGLUniformLocation, v: Int32Array): void;
-  uniform1iv(location: ?WebGLUniformLocation, v: Array<number>): void;
-  uniform1iv(location: ?WebGLUniformLocation, v: [number]): void;
-  uniform2f(location: ?WebGLUniformLocation, x: number, y: number): void;
-  uniform2fv(location: ?WebGLUniformLocation, v: Float32Array): void;
-  uniform2fv(location: ?WebGLUniformLocation, v: Array<number>): void;
-  uniform2fv(location: ?WebGLUniformLocation, v: [number, number]): void;
-  uniform2i(location: ?WebGLUniformLocation, x: number, y: number): void;
-  uniform2iv(location: ?WebGLUniformLocation, v: Int32Array): void;
-  uniform2iv(location: ?WebGLUniformLocation, v: Array<number>): void;
-  uniform2iv(location: ?WebGLUniformLocation, v: [number, number]): void;
-  uniform3f(location: ?WebGLUniformLocation, x: number, y: number, z: number): void;
-  uniform3fv(location: ?WebGLUniformLocation, v: Float32Array): void;
-  uniform3fv(location: ?WebGLUniformLocation, v: Array<number>): void;
-  uniform3fv(location: ?WebGLUniformLocation, v: [number, number, number]): void;
-  uniform3i(location: ?WebGLUniformLocation, x: number, y: number, z: number): void;
-  uniform3iv(location: ?WebGLUniformLocation, v: Int32Array): void;
-  uniform3iv(location: ?WebGLUniformLocation, v: Array<number>): void;
-  uniform3iv(location: ?WebGLUniformLocation, v: [number, number, number]): void;
-  uniform4f(location: ?WebGLUniformLocation, x: number, y: number, z: number, w: number): void;
-  uniform4fv(location: ?WebGLUniformLocation, v: Float32Array): void;
-  uniform4fv(location: ?WebGLUniformLocation, v: Array<number>): void;
-  uniform4fv(location: ?WebGLUniformLocation, v: [number, number, number, number]): void;
-  uniform4i(location: ?WebGLUniformLocation, x: number, y: number, z: number, w: number): void;
-  uniform4iv(location: ?WebGLUniformLocation, v: Int32Array): void;
-  uniform4iv(location: ?WebGLUniformLocation, v: Array<number>): void;
-  uniform4iv(location: ?WebGLUniformLocation, v: [number, number, number, number]): void;
-
-  uniformMatrix2fv(location: ?WebGLUniformLocation, transpose: boolean,
-                        value: Float32Array): void;
-  uniformMatrix2fv(location: ?WebGLUniformLocation, transpose: boolean,
-                        value: Array<number>): void;
-  uniformMatrix3fv(location: ?WebGLUniformLocation, transpose: boolean,
-                        value: Float32Array): void;
-  uniformMatrix3fv(location: ?WebGLUniformLocation, transpose: boolean,
-                        value: Array<number>): void;
-  uniformMatrix4fv(location: ?WebGLUniformLocation, transpose: boolean,
-                        value: Float32Array): void;
-  uniformMatrix4fv(location: ?WebGLUniformLocation, transpose: boolean,
-                        value: Array<number>): void;
-
-  useProgram(program: ?WebGLProgram): void;
-  validateProgram(program: WebGLProgram): void;
-
-  vertexAttrib1f(index: number, x: number): void;
-  vertexAttrib1fv(index: number, values: VertexAttribFVSource): void;
-  vertexAttrib2f(index: number, x: number, y: number): void;
-  vertexAttrib2fv(index: number, values: VertexAttribFVSource): void;
-  vertexAttrib3f(index: number, x: number, y: number, z: number): void;
-  vertexAttrib3fv(index: number, values: VertexAttribFVSource): void;
-  vertexAttrib4f(index: number, x: number, y: number, z: number, w: number): void;
-  vertexAttrib4fv(index: number, values: VertexAttribFVSource): void;
-  vertexAttribPointer(index: number, size: number, type: number,
-                           normalized: boolean, stride: number, offset: number): void;
-
-  viewport(x: number, y: number, width: number, height: number): void;
-};
-
-declare class WebGLContextEvent extends Event {
-  statusMessage: string;
-};
-
-// http://www.w3.org/TR/html5/scripting-1.html#renderingcontext
-type RenderingContext = CanvasRenderingContext2D | WebGLRenderingContext;
-
-// https://www.w3.org/TR/html5/scripting-1.html#htmlcanvaselement
-declare class HTMLCanvasElement extends HTMLElement {
-  tagName: 'CANVAS';
-  width: number;
-  height: number;
-  getContext(contextId: "2d", ...args: any): CanvasRenderingContext2D;
-  getContext(contextId: "webgl", contextAttributes?: Partial<WebGLContextAttributes>): ?WebGLRenderingContext;
-  // IE currently only supports "experimental-webgl"
-  getContext(contextId: "experimental-webgl", contextAttributes?: Partial<WebGLContextAttributes>): ?WebGLRenderingContext;
-  getContext(contextId: string, ...args: any): ?RenderingContext; // fallback
-  toDataURL(type?: string, ...args: any): string;
-  toBlob(callback: (v: File) => void, type?: string, ...args: any): void;
-  captureStream(frameRate?: number): CanvasCaptureMediaStream;
-}
-
-// https://html.spec.whatwg.org/multipage/forms.html#the-details-element
-declare class HTMLDetailsElement extends HTMLElement {
-  tagName: 'DETAILS';
-  open: boolean;
-}
-
-declare class HTMLFormElement extends HTMLElement {
-  tagName: 'FORM';
-  @@iterator(): Iterator<HTMLElement>;
-  [index: number | string]: HTMLElement | null;
-  acceptCharset: string;
-  action: string;
-  elements: HTMLCollection<HTMLElement>;
-  encoding: string;
-  enctype: string;
-  length: number;
-  method: string;
-  name: string;
-  rel: string;
-  target: string;
-
-  checkValidity(): boolean;
-  reportValidity(): boolean;
-  reset(): void;
-  submit(): void;
-}
-
-// https://www.w3.org/TR/html5/forms.html#the-fieldset-element
-declare class HTMLFieldSetElement extends HTMLElement {
-  tagName: 'FIELDSET';
-  disabled: boolean;
-  elements: HTMLCollection<HTMLElement>; // readonly
-  form: HTMLFormElement | null; // readonly
-  name: string;
-  type: string; // readonly
-
-  checkValidity(): boolean;
-  setCustomValidity(error: string): void;
-}
-
-declare class HTMLLegendElement extends HTMLElement {
-  tagName: 'LEGEND';
-  form: HTMLFormElement | null; // readonly
-}
-
-declare class HTMLIFrameElement extends HTMLElement {
-  tagName: 'IFRAME';
-  allowFullScreen: boolean;
-  contentDocument: Document;
-  contentWindow: any;
-  frameBorder: string;
-  height: string;
-  marginHeight: string;
-  marginWidth: string;
-  name: string;
-  scrolling: string;
-  sandbox: DOMTokenList;
-  src: string;
-  // flowlint unsafe-getters-setters:off
-  get srcdoc(): string;
-  set srcdoc(value: string | TrustedHTML): void;
-  // flowlint unsafe-getters-setters:error
-  width: string;
-}
-
-declare class HTMLImageElement extends HTMLElement {
-  tagName: 'IMG';
-  alt: string;
-  complete: boolean; // readonly
-  crossOrigin: ?string;
-  currentSrc: string; // readonly
-  height: number;
-  decode(): Promise<void>;
-  isMap: boolean;
-  naturalHeight: number; // readonly
-  naturalWidth: number; // readonly
-  sizes: string;
-  src: string;
-  srcset: string;
-  useMap: string;
-  width: number;
-}
-
-declare class Image extends HTMLImageElement {
-  constructor(width?: number, height?: number): void;
-}
-
-declare class MediaError {
-  MEDIA_ERR_ABORTED: number;
-  MEDIA_ERR_NETWORK: number;
-  MEDIA_ERR_DECODE: number;
-  MEDIA_ERR_SRC_NOT_SUPPORTED: number;
-  code: number;
-  message: ?string;
-}
-
-declare class TimeRanges {
-  length: number;
-  start(index: number): number;
-  end(index: number): number;
-}
-declare class Audio extends HTMLAudioElement {
-  constructor(URLString?: string): void;
-}
-
-declare class AudioTrack {
-  id: string;
-  kind: string;
-  label: string;
-  language: string;
-  enabled: boolean;
-}
-
-declare class AudioTrackList extends EventTarget {
-  length: number;
-  [index: number]: AudioTrack;
-
-  getTrackById(id: string): ?AudioTrack;
-
-  onchange: (ev: any) => any;
-  onaddtrack: (ev: any) => any;
-  onremovetrack: (ev: any) => any;
-}
-
-declare class VideoTrack {
-  id: string;
-  kind: string;
-  label: string;
-  language: string;
-  selected: boolean;
-}
-
-declare class VideoTrackList extends EventTarget {
-  length: number;
-  [index: number]: VideoTrack;
-  getTrackById(id: string): ?VideoTrack;
-  selectedIndex: number;
-
-  onchange: (ev: any) => any;
-  onaddtrack: (ev: any) => any;
-  onremovetrack: (ev: any) => any;
-}
-
-declare class TextTrackCue extends EventTarget {
-  constructor(startTime: number, endTime: number, text: string): void;
-
-  track: TextTrack;
-  id: string;
-  startTime: number;
-  endTime: number;
-  pauseOnExit: boolean;
-  vertical: string;
-  snapToLines: boolean;
-  lines: number;
-  position: number;
-  size: number;
-  align: string;
-  text: string;
-
-  getCueAsHTML(): Node;
-  onenter: (ev: any) => any;
-  onexit: (ev: any) => any;
-}
-
-declare class TextTrackCueList {
-  @@iterator(): Iterator<TextTrackCue>;
-  length: number;
-  [index: number]: TextTrackCue;
-  getCueById(id: string): ?TextTrackCue;
-}
-
-declare class TextTrack extends EventTarget {
-  kind: string;
-  label: string;
-  language: string;
-
-  mode: string;
-
-  cues: TextTrackCueList;
-  activeCues: TextTrackCueList;
-
-  addCue(cue: TextTrackCue): void;
-  removeCue(cue: TextTrackCue): void;
-
-  oncuechange: (ev: any) => any;
-}
-
-declare class TextTrackList extends EventTarget {
-  length: number;
-  [index: number]: TextTrack;
-
-  onaddtrack: (ev: any) => any;
-  onremovetrack: (ev: any) => any;
-}
-
-declare class MediaKeyStatusMap<BufferDataSource, MediaKeyStatus> {
-  @@iterator(): Iterator<[BufferDataSource, MediaKeyStatus]>;
-  size: number;
-  entries(): Iterator<[BufferDataSource, MediaKeyStatus]>;
-  forEach(callbackfn: (value: MediaKeyStatus, key: BufferDataSource, map: MediaKeyStatusMap<BufferDataSource, MediaKeyStatus>) => any, thisArg?: any): void;
-  get(key: BufferDataSource): MediaKeyStatus;
-  has(key: BufferDataSource): boolean;
-  keys(): Iterator<BufferDataSource>;
-  values(): Iterator<MediaKeyStatus>;
-}
-
-declare class MediaKeySession extends EventTarget {
-  sessionId: string;
-  expiration: number;
-  closed: Promise<void>;
-  keyStatuses: MediaKeyStatusMap<BufferDataSource, MediaKeyStatus>;
-
-  generateRequest(initDataType: string, initData: BufferDataSource): Promise<void>;
-  load(sessionId: string): Promise<boolean>;
-  update(response: BufferDataSource): Promise<void>;
-  close(): Promise<void>;
-  remove(): Promise<void>;
-
-  onkeystatuschange: (ev: any) => any;
-  onmessage: (ev: any) => any;
-}
-
-declare class MediaKeys {
-  createSession(mediaKeySessionType: MediaKeySessionType): MediaKeySession;
-  setServerCertificate(serverCertificate: BufferDataSource): Promise<boolean>;
-}
-
-declare class HTMLMediaElement extends HTMLElement {
-  // error state
-  error: ?MediaError;
-
-  // network state
-  src: string;
-  srcObject: ?any;
-  currentSrc: string;
-  crossOrigin: ?string;
-  NETWORK_EMPTY: number;
-  NETWORK_IDLE: number;
-  NETWORK_LOADING: number;
-  NETWORK_NO_SOURCE: number;
-  networkState: number;
-  preload: string;
-  buffered: TimeRanges;
-  load(): void;
-  canPlayType(type: string): string;
-
-  // ready state
-  HAVE_NOTHING: number;
-  HAVE_METADATA: number;
-  HAVE_CURRENT_DATA: number;
-  HAVE_FUTURE_DATA: number;
-  HAVE_ENOUGH_DATA: number;
-  readyState: number;
-  seeking: boolean;
-
-  // playback state
-  currentTime: number;
-  duration: number;
-  startDate: Date;
-  paused: boolean;
-  defaultPlaybackRate: number;
-  playbackRate: number;
-  played: TimeRanges;
-  seekable: TimeRanges;
-  ended: boolean;
-  autoplay: boolean;
-  loop: boolean;
-  play(): Promise<void>;
-  pause(): void;
-  fastSeek(): void;
-  captureStream(): MediaStream;
-
-  // media controller
-  mediaGroup: string;
-  controller: ?any;
-
-  // controls
-  controls: boolean;
-  volume: number;
-  muted: boolean;
-  defaultMuted: boolean;
-  controlsList?: DOMTokenList;
-
-  // tracks
-  audioTracks: AudioTrackList;
-  videoTracks: VideoTrackList;
-  textTracks: TextTrackList;
-  addTextTrack(kind: string, label?: string, language?: string): TextTrack;
-
-  // media keys
-  mediaKeys?: ?MediaKeys;
-  setMediakeys?: (mediakeys: ?MediaKeys) => Promise<?MediaKeys>;
-}
-
-declare class HTMLAudioElement extends HTMLMediaElement {
-  tagName: 'AUDIO';
-}
-
-declare class HTMLVideoElement extends HTMLMediaElement {
-  tagName: 'VIDEO';
-  width: number;
-  height: number;
-  videoWidth: number;
-  videoHeight: number;
-  poster: string;
-}
-
-declare class HTMLSourceElement extends HTMLElement {
-    tagName: 'SOURCE';
-    src: string;
-    type: string;
-
-    //when used with the picture element
-    srcset: string;
-    sizes: string;
-    media: string;
-}
-
-declare class ValidityState {
-  badInput: boolean;
-  customError: boolean;
-  patternMismatch: boolean;
-  rangeOverflow: boolean;
-  rangeUnderflow: boolean;
-  stepMismatch: boolean;
-  tooLong: boolean;
-  tooShort: boolean;
-  typeMismatch: boolean;
-  valueMissing: boolean;
-  valid: boolean;
-}
-
-// https://w3c.github.io/html/sec-forms.html#dom-selectionapielements-setselectionrange
-type SelectionDirection = 'backward' | 'forward' | 'none';
-type SelectionMode = 'select' | 'start' | 'end' | 'preserve';
-declare class HTMLInputElement extends HTMLElement {
-  tagName: 'INPUT';
-  accept: string;
-  align: string;
-  alt: string;
-  autocomplete: string;
-  autofocus: boolean;
-  border: string;
-  checked: boolean;
-  complete: boolean;
-  defaultChecked: boolean;
-  defaultValue: string;
-  dirname: string;
-  disabled: boolean;
-  dynsrc: string;
-  files: FileList;
-  form: HTMLFormElement | null;
-  formAction: string;
-  formEncType: string;
-  formMethod: string;
-  formNoValidate: boolean;
-  formTarget: string;
-  height: string;
-  hspace: number;
-  indeterminate: boolean;
-  labels: NodeList<HTMLLabelElement>;
-  list: HTMLElement | null;
-  loop: number;
-  lowsrc: string;
-  max: string;
-  maxLength: number;
-  min: string;
-  multiple: boolean;
-  name: string;
-  pattern: string;
-  placeholder: string;
-  readOnly: boolean;
-  required: boolean;
-  selectionDirection: SelectionDirection;
-  selectionEnd: number;
-  selectionStart: number;
-  size: number;
-  src: string;
-  start: string;
-  status: boolean;
-  step: string;
-  type: string;
-  useMap: string;
-  validationMessage: string;
-  validity: ValidityState;
-  value: string;
-  valueAsDate: Date;
-  valueAsNumber: number;
-  vrml: string;
-  vspace: number;
-  width: string;
-  willValidate: boolean;
-
-  checkValidity(): boolean;
-  reportValidity(): boolean;
-  setCustomValidity(error: string): void;
-  createTextRange(): TextRange;
-  select(): void;
-  setRangeText(replacement: string, start?: void, end?: void, selectMode?: void): void;
-  setRangeText(replacement: string, start: number, end: number, selectMode?: SelectionMode): void;
-  setSelectionRange(start: number, end: number, direction?: SelectionDirection): void;
-  showPicker(): void;
-  stepDown(stepDecrement?: number): void;
-  stepUp(stepIncrement?: number): void;
-}
-
-declare class HTMLButtonElement extends HTMLElement {
-  tagName: 'BUTTON';
-  autofocus: boolean;
-  disabled: boolean;
-  form: HTMLFormElement | null;
-  labels: NodeList<HTMLLabelElement> | null;
-  name: string;
-  type: string;
-  validationMessage: string;
-  validity: ValidityState;
-  value: string;
-  willValidate: boolean;
-
-  checkValidity(): boolean;
-  reportValidity(): boolean;
-  setCustomValidity(error: string): void;
-}
-
-// https://w3c.github.io/html/sec-forms.html#the-textarea-element
-declare class HTMLTextAreaElement extends HTMLElement {
-  tagName: 'TEXTAREA';
-  autofocus: boolean;
-  cols: number;
-  dirName: string;
-  disabled: boolean;
-  form: HTMLFormElement | null;
-  maxLength: number;
-  name: string;
-  placeholder: string;
-  readOnly: boolean;
-  required: boolean;
-  rows: number;
-  wrap: string;
-
-  type: string;
-  defaultValue: string;
-  value: string;
-  textLength: number;
-
-  willValidate: boolean;
-  validity: ValidityState;
-  validationMessage: string;
-  checkValidity(): boolean;
-  setCustomValidity(error: string): void;
-
-  labels: NodeList<HTMLLabelElement>;
-
-  select(): void;
-  selectionStart: number;
-  selectionEnd: number;
-  selectionDirection: SelectionDirection;
-  setSelectionRange(start: number, end: number, direction?: SelectionDirection): void;
-}
-
-declare class HTMLSelectElement extends HTMLElement {
-  tagName: 'SELECT';
-  autocomplete: string;
-  autofocus: boolean;
-  disabled: boolean;
-  form: HTMLFormElement | null;
-  labels: NodeList<HTMLLabelElement>;
-  length: number;
-  multiple: boolean;
-  name: string;
-  options: HTMLOptionsCollection;
-  required: boolean;
-  selectedIndex: number;
-  selectedOptions: HTMLCollection<HTMLOptionElement>;
-  size: number;
-  type: string;
-  validationMessage: string;
-  validity: ValidityState;
-  value: string;
-  willValidate: boolean;
-
-  add(element: HTMLElement, before?: HTMLElement): void;
-  checkValidity(): boolean;
-  item(index: number): HTMLOptionElement | null;
-  namedItem(name: string): HTMLOptionElement | null;
-  remove(index?: number): void;
-  setCustomValidity(error: string): void;
-}
-
-declare class HTMLOptionsCollection extends HTMLCollection<HTMLOptionElement> {
-  selectedIndex: number;
-  add(element: HTMLOptionElement | HTMLOptGroupElement, before?: HTMLElement | number): void;
-  remove(index: number): void;
-}
-
-declare class HTMLOptionElement extends HTMLElement {
-  tagName: 'OPTION';
-  defaultSelected: boolean;
-  disabled: boolean;
-  form: HTMLFormElement | null;
-  index: number;
-  label: string;
-  selected: boolean;
-  text: string;
-  value: string;
-}
-
-declare class HTMLOptGroupElement extends HTMLElement {
-  tagName: 'OPTGROUP';
-  disabled: boolean;
-  label: string;
-}
-
-declare class HTMLAnchorElement extends HTMLElement {
-  tagName: 'A';
-  charset: string;
-  coords: string;
-  download: string;
-  hash: string;
-  host: string;
-  hostname: string;
-  href: string;
-  hreflang: string;
-  media: string;
-  name: string;
-  origin: string;
-  password: string;
-  pathname: string;
-  port: string;
-  protocol: string;
-  rel: string;
-  rev: string;
-  search: string;
-  shape: string;
-  target: string;
-  text: string;
-  type: string;
-  username: string;
-}
-
-// https://w3c.github.io/html/sec-forms.html#the-label-element
-declare class HTMLLabelElement extends HTMLElement {
-  tagName: 'LABEL';
-  form: HTMLFormElement | null;
-  htmlFor: string;
-  control: HTMLElement | null;
-}
-
-declare class HTMLLinkElement extends HTMLElement {
-  tagName: 'LINK';
-  crossOrigin: ?('anonymous' | 'use-credentials');
-  href: string;
-  hreflang: string;
-  media: string;
-  rel: string;
-  sizes: DOMTokenList;
-  type: string;
-  as: string;
-}
-
-declare class HTMLScriptElement extends HTMLElement {
-  tagName: 'SCRIPT';
-  async: boolean;
-  charset: string;
-  crossOrigin?: string;
-  defer: boolean;
-  // flowlint unsafe-getters-setters:off
-  get src(): string;
-  set src(value: string | TrustedScriptURL): void;
-  get text(): string;
-  set text(value: string | TrustedScript): void;
-  // flowlint unsafe-getters-setters:error
-  type: string;
-}
-
-declare class HTMLStyleElement extends HTMLElement {
-  tagName: 'STYLE';
-  disabled: boolean;
-  media: string;
-  scoped: boolean;
-  sheet: ?CSSStyleSheet;
-  type: string;
-}
-
-declare class HTMLParagraphElement extends HTMLElement {
-  tagName: 'P';
-  align: 'left' | 'center' | 'right' | 'justify'; // deprecated in HTML 4.01
-}
-
-declare class HTMLHtmlElement extends HTMLElement {
-  tagName: 'HTML';
-}
-
-declare class HTMLBodyElement extends HTMLElement {
-  tagName: 'BODY';
-}
-
-declare class HTMLHeadElement extends HTMLElement {
-  tagName: 'HEAD';
-}
-
-declare class HTMLDivElement extends HTMLElement {
-  tagName: 'DIV';
-}
-
-declare class HTMLSpanElement extends HTMLElement {
-  tagName: 'SPAN';
-}
-
-declare class HTMLAppletElement extends HTMLElement {}
-
-declare class HTMLHeadingElement extends HTMLElement {
-  tagName: 'H1' | 'H2' | 'H3' | 'H4' | 'H5' | 'H6';
-}
-
-declare class HTMLHRElement extends HTMLElement {
-  tagName: 'HR';
-}
-
-declare class HTMLBRElement extends HTMLElement {
-  tagName: 'BR';
-}
-
-declare class HTMLDListElement extends HTMLElement {
-  tagName: 'DL';
-}
-
-declare class HTMLAreaElement extends HTMLElement {
-  tagName: 'AREA';
-  alt: string;
-  coords: string;
-  shape: string;
-  target: string;
-  download: string;
-  ping: string;
-  rel: string;
-  relList: DOMTokenList;
-  referrerPolicy: string;
-}
-
-declare class HTMLDataElement extends HTMLElement {
-  tagName: 'DATA';
-  value: string;
-}
-
-declare class HTMLDataListElement extends HTMLElement {
-  tagName: 'DATALIST';
-  options: HTMLCollection<HTMLOptionElement>;
-}
-
-declare class HTMLDialogElement extends HTMLElement {
-  tagName: 'DIALOG';
-  open: boolean;
-  returnValue: string;
-  show(): void;
-  showModal(): void;
-  close(returnValue: ?string): void;
-}
-
-declare class HTMLEmbedElement extends HTMLElement {
-  tagName: 'EMBED';
-  src: string;
-  type: string;
-  width: string;
-  height: string;
-  getSVGDocument(): ?Document;
-}
-
-declare class HTMLMapElement extends HTMLElement {
-  tagName: 'MAP';
-  areas: HTMLCollection<HTMLAreaElement>;
-  images: HTMLCollection<HTMLImageElement>;
-  name: string;
-}
-
-declare class HTMLMeterElement extends HTMLElement {
-  tagName: 'METER';
-  high: number;
-  low: number;
-  max: number;
-  min: number;
-  optimum: number;
-  value: number;
-  labels: NodeList<HTMLLabelElement>;
-}
-
-declare class HTMLModElement extends HTMLElement {
-  tagName: 'DEL' | 'INS';
-  cite: string;
-  dateTime: string;
-}
-
-declare class HTMLObjectElement extends HTMLElement {
-  tagName: 'OBJECT';
-  contentDocument: ?Document;
-  contentWindow: ?WindowProxy;
-  data: string;
-  form: ?HTMLFormElement;
-  height: string;
-  name: string;
-  type: string;
-  typeMustMatch: boolean;
-  useMap: string;
-  validationMessage: string;
-  validity: ValidityState;
-  width: string;
-  willValidate: boolean;
-  checkValidity(): boolean;
-  getSVGDocument(): ?Document;
-  reportValidity(): boolean;
-  setCustomValidity(error: string): void;
-}
-
-declare class HTMLOutputElement extends HTMLElement {
-  defaultValue: string;
-  form: ?HTMLFormElement;
-  htmlFor: DOMTokenList;
-  labels: NodeList<HTMLLabelElement>;
-  name: string;
-  type: string;
-  validationMessage: string;
-  validity: ValidityState;
-  value: string;
-  willValidate: boolean;
-  checkValidity(): boolean;
-  reportValidity(): boolean;
-  setCustomValidity(error: string): void;
-}
-
-declare class HTMLParamElement extends HTMLElement {
-  tagName: 'PARAM';
-  name: string;
-  value: string;
-}
-
-declare class HTMLProgressElement extends HTMLElement {
-  tagName: 'PROGRESS';
-  labels: NodeList<HTMLLabelElement>;
-  max: number;
-  position: number;
-  value: number;
-}
-
-declare class HTMLPictureElement extends HTMLElement {
-  tagName: 'PICTURE';
-}
-
-declare class HTMLTimeElement extends HTMLElement {
-  tagName: 'TIME';
-  dateTime: string;
-}
-
-declare class HTMLTitleElement extends HTMLElement {
-  tagName: 'TITLE';
-  text: string;
-}
-
-declare class HTMLTrackElement extends HTMLElement {
-  tagName: 'TRACK';
-  static NONE: 0;
-  static LOADING: 1;
-  static LOADED: 2;
-  static ERROR: 3;
-
-  default: boolean;
-  kind: string;
-  label: string;
-  readyState: 0 | 1 | 2 | 3;
-  src: string;
-  srclang: string;
-  track: TextTrack;
-}
-
-declare class HTMLQuoteElement extends HTMLElement {
-  tagName: 'BLOCKQUOTE' | 'Q';
-  cite: string;
-}
-
-declare class HTMLOListElement extends HTMLElement {
-  tagName: 'OL';
-  reversed: boolean;
-  start: number;
-  type: string;
-}
-
-declare class HTMLUListElement extends HTMLElement {
-  tagName: 'UL';
-}
-
-declare class HTMLLIElement extends HTMLElement {
-  tagName: 'LI';
-  value: number;
-}
-
-declare class HTMLPreElement extends HTMLElement {
-  tagName: 'PRE';
-}
-
-declare class HTMLMetaElement extends HTMLElement {
-  tagName: 'META';
-  content: string;
-  httpEquiv: string;
-  name: string;
-}
-
-declare class HTMLUnknownElement extends HTMLElement {}
-
-declare class TextRange {
-  boundingLeft: number;
-  htmlText: string;
-  offsetLeft: number;
-  boundingWidth: number;
-  boundingHeight: number;
-  boundingTop: number;
-  text: string;
-  offsetTop: number;
-  moveToPoint(x: number, y: number): void;
-  queryCommandValue(cmdID: string): any;
-  getBookmark(): string;
-  move(unit: string, count?: number): number;
-  queryCommandIndeterm(cmdID: string): boolean;
-  scrollIntoView(fStart?: boolean): void;
-  findText(string: string, count?: number, flags?: number): boolean;
-  execCommand(cmdID: string, showUI?: boolean, value?: any): boolean;
-  getBoundingClientRect(): DOMRect;
-  moveToBookmark(bookmark: string): boolean;
-  isEqual(range: TextRange): boolean;
-  duplicate(): TextRange;
-  collapse(start?: boolean): void;
-  queryCommandText(cmdID: string): string;
-  select(): void;
-  pasteHTML(html: string): void;
-  inRange(range: TextRange): boolean;
-  moveEnd(unit: string, count?: number): number;
-  getClientRects(): DOMRectList;
-  moveStart(unit: string, count?: number): number;
-  parentElement(): Element;
-  queryCommandState(cmdID: string): boolean;
-  compareEndPoints(how: string, sourceRange: TextRange): number;
-  execCommandShowHelp(cmdID: string): boolean;
-  moveToElementText(element: Element): void;
-  expand(Unit: string): boolean;
-  queryCommandSupported(cmdID: string): boolean;
-  setEndPoint(how: string, SourceRange: TextRange): void;
-  queryCommandEnabled(cmdID: string): boolean;
-}
-
-// These types used to exist as a copy of DOMRect/DOMRectList, which is
-// incorrect because there are no ClientRect/ClientRectList globals on the DOM.
-// Keep these as type aliases for backwards compatibility.
-declare type ClientRect = DOMRect;
-declare type ClientRectList = DOMRectList;
-
-// TODO: HTML*Element
-
-declare class DOMImplementation {
-  createDocumentType(qualifiedName: string, publicId: string, systemId: string): DocumentType;
-  createDocument(namespaceURI: string | null, qualifiedName: string, doctype?: DocumentType | null): Document;
-  hasFeature(feature: string, version?: string): boolean;
-
-  // non-standard
-  createHTMLDocument(title?: string): Document;
-}
-
-declare class DocumentType extends Node {
-  name: string;
-  notations: NamedNodeMap;
-  systemId: string;
-  internalSubset: string;
-  entities: NamedNodeMap;
-  publicId: string;
-
-  // from ChildNode interface
-  after(...nodes: Array<string | Node>): void;
-  before(...nodes: Array<string | Node>): void;
-  replaceWith(...nodes: Array<string | Node>): void;
-  remove(): void;
-}
-
-declare class CharacterData extends Node {
-  length: number;
-  data: string;
-  deleteData(offset: number, count: number): void;
-  replaceData(offset: number, count: number, arg: string): void;
-  appendData(arg: string): void;
-  insertData(offset: number, arg: string): void;
-  substringData(offset: number, count: number): string;
-
-  // from ChildNode interface
-  after(...nodes: Array<string | Node>): void;
-  before(...nodes: Array<string | Node>): void;
-  replaceWith(...nodes: Array<string | Node>): void;
-  remove(): void;
-}
-
-declare class Text extends CharacterData {
-  assignedSlot?: HTMLSlotElement;
-  wholeText: string;
-  splitText(offset: number): Text;
-  replaceWholeText(content: string): Text;
-}
-
-declare class Comment extends CharacterData {
-  text: string;
-}
-
-declare class URL {
-  static canParse(url: string, base?: string): boolean;
-  static createObjectURL(blob: Blob): string;
-  static createObjectURL(mediaSource: MediaSource): string;
-  static revokeObjectURL(url: string): void;
-  constructor(url: string, base?: string | URL): void;
-  hash: string;
-  host: string;
-  hostname: string;
-  href: string;
-  +origin: string;
-  password: string;
-  pathname: string;
-  port: string;
-  protocol: string;
-  search: string;
-  +searchParams: URLSearchParams;
-  username: string;
-  toString(): string;
-  toJSON(): string;
-}
-
-declare interface MediaSourceHandle {
-}
-
-declare class MediaSource extends EventTarget {
-  sourceBuffers: SourceBufferList;
-  activeSourceBuffers: SourceBufferList;
-  // https://w3c.github.io/media-source/#dom-readystate
-  readyState: "closed" | "open" | "ended";
-  duration: number;
-  handle: MediaSourceHandle;
-  addSourceBuffer(type: string): SourceBuffer;
-  removeSourceBuffer(sourceBuffer: SourceBuffer): void;
-  endOfStream(error?: string): void;
-  static isTypeSupported(type: string): boolean;
-}
-
-declare class SourceBuffer extends EventTarget {
-  mode: "segments" | "sequence";
-  updating: boolean;
-  buffered: TimeRanges;
-  timestampOffset: number;
-  audioTracks: AudioTrackList;
-  videoTracks: VideoTrackList;
-  textTracks: TextTrackList;
-  appendWindowStart: number;
-  appendWindowEnd: number;
-
-  appendBuffer(data: ArrayBuffer | $ArrayBufferView): void;
-  // TODO: Add ReadableStream
-  // appendStream(stream: ReadableStream, maxSize?: number): void;
-  abort(): void;
-  remove(start: number, end: number): void;
-
-  trackDefaults: TrackDefaultList;
-}
-
-declare class SourceBufferList extends EventTarget {
-  @@iterator(): Iterator<SourceBuffer>;
-  [index: number]: SourceBuffer;
-  length: number;
-}
-
-declare class Storage {
-  length: number;
-  getItem(key: string): ?string;
-  setItem(key: string, data: string): void;
-  clear(): void;
-  removeItem(key: string): void;
-  key(index: number): ?string;
-  [name: string]: ?string;
-}
-
-declare class TrackDefaultList {
-  [index: number]: TrackDefault;
-  length: number;
-}
-
-declare class TrackDefault {
-  type: "audio" | "video" | "text";
-  byteStreamTrackID: string;
-  language: string;
-  label: string;
-  kinds: Array<string>;
-}
-
-// TODO: The use of `typeof` makes this function signature effectively
-// (node: Node) => number, but it should be (node: Node) => 1|2|3
-type NodeFilterCallback = (node: Node) =>
-typeof NodeFilter.FILTER_ACCEPT |
-typeof NodeFilter.FILTER_REJECT |
-typeof NodeFilter.FILTER_SKIP;
-
-type NodeFilterInterface = NodeFilterCallback | { acceptNode: NodeFilterCallback, ... }
-
-// TODO: window.NodeFilter exists at runtime and behaves as a constructor
-//       as far as `instanceof` is concerned, but it is not callable.
-declare class NodeFilter {
-  static SHOW_ALL: -1;
-  static SHOW_ELEMENT: 1;
-  static SHOW_ATTRIBUTE: 2; // deprecated
-  static SHOW_TEXT: 4;
-  static SHOW_CDATA_SECTION: 8; // deprecated
-  static SHOW_ENTITY_REFERENCE: 16; // deprecated
-  static SHOW_ENTITY: 32; // deprecated
-  static SHOW_PROCESSING_INSTRUCTION: 64;
-  static SHOW_COMMENT: 128;
-  static SHOW_DOCUMENT: 256;
-  static SHOW_DOCUMENT_TYPE: 512;
-  static SHOW_DOCUMENT_FRAGMENT: 1024;
-  static SHOW_NOTATION: 2048; // deprecated
-  static FILTER_ACCEPT: 1;
-  static FILTER_REJECT: 2;
-  static FILTER_SKIP: 3;
-  acceptNode: NodeFilterCallback;
-}
-
-// TODO: window.NodeIterator exists at runtime and behaves as a constructor
-//       as far as `instanceof` is concerned, but it is not callable.
-declare class NodeIterator<RootNodeT, WhatToShowT> {
-  root: RootNodeT;
-  whatToShow: number;
-  filter: NodeFilter;
-  expandEntityReferences: boolean;
-  referenceNode: RootNodeT | WhatToShowT;
-  pointerBeforeReferenceNode: boolean;
-  detach(): void;
-  previousNode(): WhatToShowT | null;
-  nextNode(): WhatToShowT | null;
-}
-
-// TODO: window.TreeWalker exists at runtime and behaves as a constructor
-//       as far as `instanceof` is concerned, but it is not callable.
-declare class TreeWalker<RootNodeT, WhatToShowT> {
-  root: RootNodeT;
-  whatToShow: number;
-  filter: NodeFilter;
-  expandEntityReferences: boolean;
-  currentNode: RootNodeT | WhatToShowT;
-  parentNode(): WhatToShowT | null;
-  firstChild(): WhatToShowT | null;
-  lastChild(): WhatToShowT | null;
-  previousSibling(): WhatToShowT | null;
-  nextSibling(): WhatToShowT | null;
-  previousNode(): WhatToShowT | null;
-  nextNode(): WhatToShowT | null;
-}
-
-/* window */
-
-declare type WindowProxy = any;
diff --git a/lib/streams.js b/lib/streams.js
deleted file mode 100644
index 7d418cb4bc6..00000000000
--- a/lib/streams.js
+++ /dev/null
@@ -1,127 +0,0 @@
-/**
- * Copyright (c) Meta Platforms, Inc. and affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- *
- * @flow
- */
-
-type TextEncodeOptions = { options?: boolean, ... };
-
-declare class TextEncoder {
-  encode(buffer: string, options?: TextEncodeOptions): Uint8Array,
-}
-
-declare class ReadableStreamController {
-  constructor(
-    stream: ReadableStream,
-    underlyingSource: UnderlyingSource,
-    size: number,
-    highWaterMark: number,
-  ): void,
-
-  desiredSize: number,
-
-  close(): void,
-  enqueue(chunk: any): void,
-  error(error: Error): void,
-}
-
-declare class ReadableStreamReader {
-  constructor(stream: ReadableStream): void,
-
-  closed: boolean,
-
-  cancel(reason: string): void,
-  read(): Promise<{
-    value: ?any,
-    done: boolean,
-    ...
-  }>,
-  releaseLock(): void,
-}
-
-declare interface UnderlyingSource {
-  autoAllocateChunkSize?: number,
-  type?: string,
-
-  start?: (controller: ReadableStreamController) => ?Promise<void>,
-  pull?: (controller: ReadableStreamController) => ?Promise<void>,
-  cancel?: (reason: string) => ?Promise<void>,
-}
-
-declare class TransformStream {
-  readable: ReadableStream,
-  writable: WritableStream,
-};
-
-interface PipeThroughTransformStream {
-  readable: ReadableStream,
-  writable: WritableStream,
-}
-
-type PipeToOptions = {
-  preventClose?: boolean,
-  preventAbort?: boolean,
-  preventCancel?: boolean,
-  ...
-};
-
-type QueuingStrategy  = {
-  highWaterMark: number,
-  size(chunk: ?any): number,
-  ...
-};
-
-declare class ReadableStream {
-  constructor(
-    underlyingSource: ?UnderlyingSource,
-    queuingStrategy: ?QueuingStrategy,
-  ): void,
-
-  locked: boolean,
-
-  cancel(reason: string): void,
-  getReader(): ReadableStreamReader,
-  pipeThrough(transform: PipeThroughTransformStream, options: ?any): void,
-  pipeTo(dest: WritableStream, options: ?PipeToOptions): Promise<void>,
-  tee(): [ReadableStream, ReadableStream],
-};
-
-declare interface WritableStreamController {
-  error(error: Error): void,
-}
-
-declare interface UnderlyingSink {
-  autoAllocateChunkSize?: number,
-  type?: string,
-
-  abort?: (reason: string) => ?Promise<void>,
-  close?: (controller: WritableStreamController) => ?Promise<void>,
-  start?: (controller: WritableStreamController) => ?Promise<void>,
-  write?: (chunk: any, controller: WritableStreamController) => ?Promise<void>,
-}
-
-declare interface WritableStreamWriter {
-  closed: Promise<any>,
-  desiredSize?: number,
-  ready: Promise<any>,
-
-  abort(reason: string): ?Promise<any>,
-  close(): Promise<any>,
-  releaseLock(): void,
-  write(chunk: any): Promise<any>,
-}
-
-declare class WritableStream {
-  constructor(
-    underlyingSink: ?UnderlyingSink,
-    queuingStrategy: QueuingStrategy,
-  ): void,
-
-  locked: boolean,
-
-  abort(reason: string): void,
-  getWriter(): WritableStreamWriter,
-}
diff --git a/newtests/lsp/queries/test.js b/newtests/lsp/queries/test.js
index 9eb46f58651..566d46be6de 100644
--- a/newtests/lsp/queries/test.js
+++ b/newtests/lsp/queries/test.js
@@ -310,7 +310,7 @@ module.exports = (suite(
         [
           [
             'telemetry/rage',
-            '{Focused: 8,LSP adapter state: Connected,.monitor_log,.log}',
+            '{Focused: 4,LSP adapter state: Connected,.monitor_log,.log}',
           ],
         ],
         [...lspIgnoreStatusAndCancellation],
diff --git a/tests/arrows/arrows.js b/tests/arrows/arrows.js
index f25cc0fb3c4..5a69c07f78c 100644
--- a/tests/arrows/arrows.js
+++ b/tests/arrows/arrows.js
@@ -8,3 +8,7 @@ function selectBestEffortImageForWidth(
     return images.find(image => image.width >= maxPixelWidth) ||
         images[images.length - 1];
 }
+
+declare class Image {
+    width: number
+}
diff --git a/tests/autocomplete_from_m_to_q/autocomplete_from_m_to_q.exp b/tests/autocomplete_from_m_to_q/autocomplete_from_m_to_q.exp
index b74419039aa..fb4fe31dfee 100644
--- a/tests/autocomplete_from_m_to_q/autocomplete_from_m_to_q.exp
+++ b/tests/autocomplete_from_m_to_q/autocomplete_from_m_to_q.exp
@@ -326,13 +326,7 @@ namespace.js:12:12
 Flags: --pretty
 {
   "result":[
-    {"name":"AbortSignal","type":"typeof AbortSignal"},
     {"name":"AggregateError","type":"typeof AggregateError"},
-    {"name":"Animation","type":"typeof Animation"},
-    {"name":"AnimationEffect","type":"typeof AnimationEffect"},
-    {"name":"AnimationEvent","type":"typeof AnimationEvent"},
-    {"name":"AnimationPlaybackEvent","type":"typeof AnimationPlaybackEvent"},
-    {"name":"AnimationTimeline","type":"typeof AnimationTimeline"},
     {"name":"Array","type":"typeof Array"},
     {"name":"ArrayBuffer","type":"typeof ArrayBuffer"},
     {"name":"atob","type":"(encodedString: string) => string"},
@@ -340,170 +334,35 @@ Flags: --pretty
       "name":"Atomics",
       "type":"{+[key: $SymbolToStringTag]: \"Atomics\", add(typedArray: $SharedIntegerTypedArray, index: number, value: number): number, and(typedArray: $SharedIntegerTypedArray, index: number, value: number): number, compareExchange(typedArray: $SharedIntegerTypedArray, index: number, expectedValue: number, replacementValue: number): number, exchange(typedArray: $SharedIntegerTypedArray, index: number, value: number): number, isLockFree(size: number): boolean, load(typedArray: $SharedIntegerTypedArray, index: number): number, notify(typedArray: Int32Array, index: number, count: number): number, or(typedArray: $SharedIntegerTypedArray, index: number, value: number): number, store(typedArray: $SharedIntegerTypedArray, index: number, value: number): number, sub(typedArray: $SharedIntegerTypedArray, index: number, value: number): number, wait(typedArray: Int32Array, index: number, value: number, timeout?: number): \"ok\" | \"not-equal\" | \"timed-out\", xor(typedArray: $SharedIntegerTypedArray, index: number, value: number): number}"
     },
-    {"name":"Attr","type":"typeof Attr"},
-    {"name":"Audio","type":"typeof Audio"},
-    {"name":"AudioTrack","type":"typeof AudioTrack"},
-    {"name":"AudioTrackList","type":"typeof AudioTrackList"},
-    {"name":"BeforeUnloadEvent","type":"typeof BeforeUnloadEvent"},
     {"name":"BigInt","type":"typeof BigInt"},
     {"name":"BigInt64Array","type":"typeof BigInt64Array"},
     {"name":"BigUint64Array","type":"typeof BigUint64Array"},
-    {"name":"Blob","type":"typeof Blob"},
     {"name":"Boolean","type":"typeof Boolean"},
-    {"name":"BroadcastChannel","type":"typeof BroadcastChannel"},
     {"name":"btoa","type":"(rawString: string) => string"},
     {"name":"CallSite","type":"typeof CallSite"},
-    {"name":"CanvasCaptureMediaStream","type":"typeof CanvasCaptureMediaStream"},
-    {"name":"CanvasDrawingStyles","type":"typeof CanvasDrawingStyles"},
-    {"name":"CanvasGradient","type":"typeof CanvasGradient"},
-    {"name":"CanvasPattern","type":"typeof CanvasPattern"},
-    {"name":"CanvasRenderingContext2D","type":"typeof CanvasRenderingContext2D"},
-    {"name":"CharacterData","type":"typeof CharacterData"},
     {"name":"clearInterval","type":"(intervalId: ?IntervalID) => void"},
     {"name":"clearTimeout","type":"(timeoutId: ?TimeoutID) => void"},
-    {"name":"ClipboardEvent","type":"typeof ClipboardEvent"},
-    {"name":"ClipboardItem","type":"typeof ClipboardItem"},
-    {"name":"Comment","type":"typeof Comment"},
-    {"name":"CompositionEvent","type":"typeof CompositionEvent"},
     {
       "name":"console",
       "type":"{_exception(...data: Array<any>): void, assert(condition: mixed, ...data: Array<any>): void, clear(): void, count(label?: string): void, countReset(label?: string): void, debug(...data: Array<any>): void, dir(...data: Array<any>): void, dirxml(...data: Array<any>): void, error(...data: Array<any>): void, group(...data: Array<any>): void, groupCollapsed(...data: Array<any>): void, groupEnd(): void, info(...data: Array<any>): void, log(...data: Array<any>): void, profile(name?: string): void, profileEnd(name?: string): void, table(tabularData: {[key: string]: any} | Array<{[key: string]: any}> | Array<Array<any>>): void, time(label?: string): void, timeEnd(label: string): void, timeLog(label?: string, ...data: Array<any>): void, timeStamp(label?: string): void, trace(...data: Array<any>): void, warn(...data: Array<any>): void, ...}"
     },
-    {"name":"CSSKeyframeRule","type":"typeof CSSKeyframeRule"},
-    {"name":"CSSKeyframesRule","type":"typeof CSSKeyframesRule"},
-    {"name":"CSSRule","type":"typeof CSSRule"},
-    {"name":"CSSRuleList","type":"typeof CSSRuleList"},
-    {"name":"CSSStyleDeclaration","type":"typeof CSSStyleDeclaration"},
-    {"name":"CSSStyleSheet","type":"typeof CSSStyleSheet"},
-    {"name":"CustomEvent","type":"typeof CustomEvent"},
-    {"name":"DataTransfer","type":"typeof DataTransfer"},
-    {"name":"DataTransferItem","type":"typeof DataTransferItem"},
-    {"name":"DataTransferItemList","type":"typeof DataTransferItemList"},
     {"name":"DataView","type":"typeof DataView"},
     {"name":"Date","type":"typeof Date"},
     {"name":"decodeURI","type":"(encodedURI: string) => string"},
     {"name":"decodeURIComponent","type":"(encodedURIComponent: string) => string"},
-    {"name":"Document","type":"typeof Document"},
-    {"name":"document","type":"Document"},
-    {"name":"DocumentFragment","type":"typeof DocumentFragment"},
-    {"name":"DocumentTimeline","type":"typeof DocumentTimeline"},
-    {"name":"DocumentType","type":"typeof DocumentType"},
-    {"name":"DOMError","type":"typeof DOMError"},
-    {"name":"DOMImplementation","type":"typeof DOMImplementation"},
-    {"name":"DOMRect","type":"typeof DOMRect"},
-    {"name":"DOMRectList","type":"typeof DOMRectList"},
-    {"name":"DOMRectReadOnly","type":"typeof DOMRectReadOnly"},
-    {"name":"DOMStringList","type":"typeof DOMStringList"},
-    {"name":"DOMTokenList","type":"typeof DOMTokenList"},
-    {"name":"DragEvent","type":"typeof DragEvent"},
-    {"name":"Element","type":"typeof Element"},
     {"name":"encodeURI","type":"(uri: string) => string"},
     {"name":"encodeURIComponent","type":"(uriComponent: string) => string"},
     {"name":"Error","type":"typeof Error"},
-    {"name":"ErrorEvent","type":"typeof ErrorEvent"},
     {"name":"escape","type":"(str: string) => string"},
     {"name":"EvalError","type":"typeof EvalError"},
-    {"name":"Event","type":"typeof Event"},
-    {"name":"EventSource","type":"typeof EventSource"},
-    {"name":"EventTarget","type":"typeof EventTarget"},
     {"name":"exports","type":"{-[key: string]: mixed}"},
-    {"name":"File","type":"typeof File"},
-    {"name":"FileList","type":"typeof FileList"},
-    {"name":"FileReader","type":"typeof FileReader"},
-    {"name":"FileSystemDirectoryHandle","type":"typeof FileSystemDirectoryHandle"},
-    {"name":"FileSystemFileHandle","type":"typeof FileSystemFileHandle"},
-    {"name":"FileSystemHandle","type":"typeof FileSystemHandle"},
-    {
-      "name":"FileSystemSyncAccessHandle",
-      "type":"typeof FileSystemSyncAccessHandle"
-    },
-    {
-      "name":"FileSystemWritableFileStream",
-      "type":"typeof FileSystemWritableFileStream"
-    },
     {"name":"FinalizationRegistry","type":"typeof FinalizationRegistry"},
     {"name":"Float32Array","type":"typeof Float32Array"},
     {"name":"Float64Array","type":"typeof Float64Array"},
-    {"name":"FocusEvent","type":"typeof FocusEvent"},
-    {"name":"FormData","type":"typeof FormData"},
     {"name":"Function","type":"typeof Function"},
     {"name":"global","type":"any"},
     {"name":"globalThis","type":"typeof globalThis"},
-    {"name":"HitRegionOptions","type":"typeof HitRegionOptions"},
-    {"name":"HTMLAnchorElement","type":"typeof HTMLAnchorElement"},
-    {"name":"HTMLAppletElement","type":"typeof HTMLAppletElement"},
-    {"name":"HTMLAreaElement","type":"typeof HTMLAreaElement"},
-    {"name":"HTMLAudioElement","type":"typeof HTMLAudioElement"},
-    {"name":"HTMLBaseElement","type":"typeof HTMLBaseElement"},
-    {"name":"HTMLBodyElement","type":"typeof HTMLBodyElement"},
-    {"name":"HTMLBRElement","type":"typeof HTMLBRElement"},
-    {"name":"HTMLButtonElement","type":"typeof HTMLButtonElement"},
-    {"name":"HTMLCanvasElement","type":"typeof HTMLCanvasElement"},
-    {"name":"HTMLCollection","type":"typeof HTMLCollection"},
-    {"name":"HTMLDataElement","type":"typeof HTMLDataElement"},
-    {"name":"HTMLDataListElement","type":"typeof HTMLDataListElement"},
-    {"name":"HTMLDetailsElement","type":"typeof HTMLDetailsElement"},
-    {"name":"HTMLDialogElement","type":"typeof HTMLDialogElement"},
-    {"name":"HTMLDivElement","type":"typeof HTMLDivElement"},
-    {"name":"HTMLDListElement","type":"typeof HTMLDListElement"},
-    {"name":"HTMLElement","type":"typeof HTMLElement"},
-    {"name":"HTMLEmbedElement","type":"typeof HTMLEmbedElement"},
-    {"name":"HTMLFieldSetElement","type":"typeof HTMLFieldSetElement"},
-    {"name":"HTMLFormElement","type":"typeof HTMLFormElement"},
-    {"name":"HTMLHeadElement","type":"typeof HTMLHeadElement"},
-    {"name":"HTMLHeadingElement","type":"typeof HTMLHeadingElement"},
-    {"name":"HTMLHRElement","type":"typeof HTMLHRElement"},
-    {"name":"HTMLHtmlElement","type":"typeof HTMLHtmlElement"},
-    {"name":"HTMLIFrameElement","type":"typeof HTMLIFrameElement"},
-    {"name":"HTMLImageElement","type":"typeof HTMLImageElement"},
-    {"name":"HTMLInputElement","type":"typeof HTMLInputElement"},
-    {"name":"HTMLLabelElement","type":"typeof HTMLLabelElement"},
-    {"name":"HTMLLegendElement","type":"typeof HTMLLegendElement"},
-    {"name":"HTMLLIElement","type":"typeof HTMLLIElement"},
-    {"name":"HTMLLinkElement","type":"typeof HTMLLinkElement"},
-    {"name":"HTMLMapElement","type":"typeof HTMLMapElement"},
-    {"name":"HTMLMediaElement","type":"typeof HTMLMediaElement"},
-    {"name":"HTMLMenuElement","type":"typeof HTMLMenuElement"},
-    {"name":"HTMLMetaElement","type":"typeof HTMLMetaElement"},
-    {"name":"HTMLMeterElement","type":"typeof HTMLMeterElement"},
-    {"name":"HTMLModElement","type":"typeof HTMLModElement"},
-    {"name":"HTMLObjectElement","type":"typeof HTMLObjectElement"},
-    {"name":"HTMLOListElement","type":"typeof HTMLOListElement"},
-    {"name":"HTMLOptGroupElement","type":"typeof HTMLOptGroupElement"},
-    {"name":"HTMLOptionElement","type":"typeof HTMLOptionElement"},
-    {"name":"HTMLOptionsCollection","type":"typeof HTMLOptionsCollection"},
-    {"name":"HTMLOutputElement","type":"typeof HTMLOutputElement"},
-    {"name":"HTMLParagraphElement","type":"typeof HTMLParagraphElement"},
-    {"name":"HTMLParamElement","type":"typeof HTMLParamElement"},
-    {"name":"HTMLPictureElement","type":"typeof HTMLPictureElement"},
-    {"name":"HTMLPreElement","type":"typeof HTMLPreElement"},
-    {"name":"HTMLProgressElement","type":"typeof HTMLProgressElement"},
-    {"name":"HTMLQuoteElement","type":"typeof HTMLQuoteElement"},
-    {"name":"HTMLScriptElement","type":"typeof HTMLScriptElement"},
-    {"name":"HTMLSelectElement","type":"typeof HTMLSelectElement"},
-    {"name":"HTMLSlotElement","type":"typeof HTMLSlotElement"},
-    {"name":"HTMLSourceElement","type":"typeof HTMLSourceElement"},
-    {"name":"HTMLSpanElement","type":"typeof HTMLSpanElement"},
-    {"name":"HTMLStyleElement","type":"typeof HTMLStyleElement"},
-    {"name":"HTMLTableCaptionElement","type":"typeof HTMLTableCaptionElement"},
-    {"name":"HTMLTableCellElement","type":"typeof HTMLTableCellElement"},
-    {"name":"HTMLTableColElement","type":"typeof HTMLTableColElement"},
-    {"name":"HTMLTableElement","type":"typeof HTMLTableElement"},
-    {"name":"HTMLTableRowElement","type":"typeof HTMLTableRowElement"},
-    {"name":"HTMLTableSectionElement","type":"typeof HTMLTableSectionElement"},
-    {"name":"HTMLTemplateElement","type":"typeof HTMLTemplateElement"},
-    {"name":"HTMLTextAreaElement","type":"typeof HTMLTextAreaElement"},
-    {"name":"HTMLTimeElement","type":"typeof HTMLTimeElement"},
-    {"name":"HTMLTitleElement","type":"typeof HTMLTitleElement"},
-    {"name":"HTMLTrackElement","type":"typeof HTMLTrackElement"},
-    {"name":"HTMLUListElement","type":"typeof HTMLUListElement"},
-    {"name":"HTMLUnknownElement","type":"typeof HTMLUnknownElement"},
-    {"name":"HTMLVideoElement","type":"typeof HTMLVideoElement"},
-    {"name":"Image","type":"typeof Image"},
-    {"name":"ImageBitmap","type":"typeof ImageBitmap"},
-    {"name":"ImageData","type":"typeof ImageData"},
     {"name":"Infinity","type":"number"},
-    {"name":"InputEvent","type":"typeof InputEvent"},
     {"name":"Int16Array","type":"typeof Int16Array"},
     {"name":"Int32Array","type":"typeof Int32Array"},
     {"name":"Int8Array","type":"typeof Int8Array"},
@@ -514,57 +373,27 @@ Flags: --pretty
       "name":"JSON",
       "type":"{|+parse: (text: string, reviver?: (key: any, value: any) => any) => any, +stringify: ((value: null | string | number | boolean | interface {} | $ReadOnlyArray<mixed>, replacer?: ?((key: string, value: any) => any) | Array<any>, space?: string | number) => string) & ((value: mixed, replacer?: ?((key: string, value: any) => any) | Array<any>, space?: string | number) => string | void)|}"
     },
-    {"name":"KeyboardEvent","type":"typeof KeyboardEvent"},
-    {"name":"KeyframeEffect","type":"typeof KeyframeEffect"},
-    {"name":"Location","type":"typeof Location"},
     {"name":"Map","type":"typeof Map"},
     {
       "name":"Math",
       "type":"{E: number, LN10: number, LN2: number, LOG10E: number, LOG2E: number, PI: number, SQRT1_2: number, SQRT2: number, abs(x: number): number, acos(x: number): number, acosh(x: number): number, asin(x: number): number, asinh(x: number): number, atan(x: number): number, atan2(y: number, x: number): number, atanh(x: number): number, cbrt(x: number): number, ceil(x: number): number, clz32(x: number): number, cos(x: number): number, cosh(x: number): number, exp(x: number): number, expm1(x: number): number, floor(x: number): number, fround(x: number): number, hypot(...values: Array<number>): number, imul(x: number, y: number): number, log(x: number): number, log10(x: number): number, log1p(x: number): number, log2(x: number): number, max(...values: Array<number>): number, min(...values: Array<number>): number, pow(x: number, y: number): number, random(): number, round(x: number): number, sign(x: number): number, sin(x: number): number, sinh(x: number): number, sqrt(x: number): number, tan(x: number): number, tanh(x: number): number, trunc(x: number): number, ...}"
     },
-    {"name":"MediaError","type":"typeof MediaError"},
-    {"name":"MediaKeys","type":"typeof MediaKeys"},
-    {"name":"MediaKeySession","type":"typeof MediaKeySession"},
-    {"name":"MediaKeyStatusMap","type":"typeof MediaKeyStatusMap"},
-    {"name":"MediaList","type":"typeof MediaList"},
-    {"name":"MediaQueryListEvent","type":"typeof MediaQueryListEvent"},
-    {"name":"MediaSource","type":"typeof MediaSource"},
-    {"name":"MediaStream","type":"typeof MediaStream"},
-    {"name":"MediaStreamTrack","type":"typeof MediaStreamTrack"},
-    {"name":"MediaStreamTrackEvent","type":"typeof MediaStreamTrackEvent"},
-    {"name":"MessageEvent","type":"typeof MessageEvent"},
     {
       "name":"module",
       "type":"{children: Array<any>, exports: any, filename: string, id: string, isPreloading: boolean, loaded: boolean, parent: any, path: string, paths: Array<string>, require(id: string): any, ...}"
     },
-    {"name":"MouseEvent","type":"typeof MouseEvent"},
-    {"name":"NamedNodeMap","type":"typeof NamedNodeMap"},
     {"name":"NaN","type":"number"},
-    {"name":"Node","type":"typeof Node"},
-    {"name":"NodeFilter","type":"typeof NodeFilter"},
-    {"name":"NodeIterator","type":"typeof NodeIterator"},
-    {"name":"NodeList","type":"typeof NodeList"},
     {"name":"Number","type":"typeof Number"},
     {"name":"Object","type":"typeof Object"},
-    {"name":"PageTransitionEvent","type":"typeof PageTransitionEvent"},
     {"name":"parseFloat","type":"(string: mixed) => number"},
     {"name":"parseInt","type":"(string: mixed, radix?: number) => number"},
-    {"name":"Path2D","type":"typeof Path2D"},
-    {"name":"PermissionStatus","type":"typeof PermissionStatus"},
-    {"name":"PointerEvent","type":"typeof PointerEvent"},
-    {"name":"ProgressEvent","type":"typeof ProgressEvent"},
     {"name":"Promise","type":"typeof Promise"},
-    {"name":"PromiseRejectionEvent","type":"typeof PromiseRejectionEvent"},
     {"name":"Proxy","type":"typeof Proxy"},
     {
       "name":"queueMicrotask",
       "type":"<TArguments: $ReadOnlyArray<mixed>>(callback: (...args: TArguments) => mixed) => void"
     },
-    {"name":"Range","type":"typeof Range"},
     {"name":"RangeError","type":"typeof RangeError"},
-    {"name":"ReadableStream","type":"typeof ReadableStream"},
-    {"name":"ReadableStreamController","type":"typeof ReadableStreamController"},
-    {"name":"ReadableStreamReader","type":"typeof ReadableStreamReader"},
     {"name":"ReferenceError","type":"typeof ReferenceError"},
     {
       "name":"Reflect",
@@ -575,11 +404,6 @@ Flags: --pretty
       "name":"require",
       "type":"{(id: string): any, cache: any, main: {children: Array<any>, exports: any, filename: string, id: string, isPreloading: boolean, loaded: boolean, parent: any, path: string, paths: Array<string>, require(id: string): any, ...}, resolve: (id: string, options?: {paths?: Array<string>, ...}) => string, ...}"
     },
-    {
-      "name":"SecurityPolicyViolationEvent",
-      "type":"typeof SecurityPolicyViolationEvent"
-    },
-    {"name":"Selection","type":"typeof Selection"},
     {"name":"Set","type":"typeof Set"},
     {
       "name":"setInterval",
@@ -590,38 +414,10 @@ Flags: --pretty
       "type":"<TArguments: Array<mixed>>(callback: (...args: TArguments) => mixed, ms?: number, ...args: TArguments) => TimeoutID"
     },
     {"name":"SharedArrayBuffer","type":"typeof SharedArrayBuffer"},
-    {"name":"SourceBuffer","type":"typeof SourceBuffer"},
-    {"name":"SourceBufferList","type":"typeof SourceBufferList"},
-    {"name":"Storage","type":"typeof Storage"},
-    {"name":"StorageEvent","type":"typeof StorageEvent"},
     {"name":"String","type":"typeof String"},
-    {"name":"StyleSheet","type":"typeof StyleSheet"},
-    {"name":"StyleSheetList","type":"typeof StyleSheetList"},
-    {"name":"SVGMatrix","type":"typeof SVGMatrix"},
     {"name":"Symbol","type":"typeof Symbol"},
     {"name":"SyntaxError","type":"typeof SyntaxError"},
-    {"name":"Text","type":"typeof Text"},
-    {"name":"TextEncoder","type":"typeof TextEncoder"},
-    {"name":"TextMetrics","type":"typeof TextMetrics"},
-    {"name":"TextRange","type":"typeof TextRange"},
-    {"name":"TextTrack","type":"typeof TextTrack"},
-    {"name":"TextTrackCue","type":"typeof TextTrackCue"},
-    {"name":"TextTrackCueList","type":"typeof TextTrackCueList"},
-    {"name":"TextTrackList","type":"typeof TextTrackList"},
-    {"name":"TimeRanges","type":"typeof TimeRanges"},
-    {"name":"Touch","type":"typeof Touch"},
-    {"name":"TouchEvent","type":"typeof TouchEvent"},
-    {"name":"TouchList","type":"typeof TouchList"},
-    {"name":"TrackDefault","type":"typeof TrackDefault"},
-    {"name":"TrackDefaultList","type":"typeof TrackDefaultList"},
-    {"name":"TransformStream","type":"typeof TransformStream"},
-    {"name":"TransitionEvent","type":"typeof TransitionEvent"},
-    {"name":"TreeWalker","type":"typeof TreeWalker"},
-    {"name":"TrustedHTML","type":"typeof TrustedHTML"},
-    {"name":"TrustedScript","type":"typeof TrustedScript"},
-    {"name":"TrustedScriptURL","type":"typeof TrustedScriptURL"},
     {"name":"TypeError","type":"typeof TypeError"},
-    {"name":"UIEvent","type":"typeof UIEvent"},
     {"name":"Uint16Array","type":"typeof Uint16Array"},
     {"name":"Uint32Array","type":"typeof Uint32Array"},
     {"name":"Uint8Array","type":"typeof Uint8Array"},
@@ -629,47 +425,9 @@ Flags: --pretty
     {"name":"undefined","type":"void"},
     {"name":"unescape","type":"(str: string) => string"},
     {"name":"URIError","type":"typeof URIError"},
-    {"name":"URL","type":"typeof URL"},
-    {"name":"URLSearchParams","type":"typeof URLSearchParams"},
-    {"name":"USBAlternateInterface","type":"typeof USBAlternateInterface"},
-    {"name":"USBConfiguration","type":"typeof USBConfiguration"},
-    {"name":"USBConnectionEvent","type":"typeof USBConnectionEvent"},
-    {"name":"USBDevice","type":"typeof USBDevice"},
-    {"name":"USBEndpoint","type":"typeof USBEndpoint"},
-    {"name":"USBInterface","type":"typeof USBInterface"},
-    {"name":"USBInTransferResult","type":"typeof USBInTransferResult"},
-    {
-      "name":"USBIsochronousInTransferPacket",
-      "type":"typeof USBIsochronousInTransferPacket"
-    },
-    {
-      "name":"USBIsochronousInTransferResult",
-      "type":"typeof USBIsochronousInTransferResult"
-    },
-    {
-      "name":"USBIsochronousOutTransferPacket",
-      "type":"typeof USBIsochronousOutTransferPacket"
-    },
-    {
-      "name":"USBIsochronousOutTransferResult",
-      "type":"typeof USBIsochronousOutTransferResult"
-    },
-    {"name":"USBOutTransferResult","type":"typeof USBOutTransferResult"},
-    {"name":"ValidityState","type":"typeof ValidityState"},
-    {"name":"VideoTrack","type":"typeof VideoTrack"},
-    {"name":"VideoTrackList","type":"typeof VideoTrackList"},
     {"name":"WeakMap","type":"typeof WeakMap"},
     {"name":"WeakRef","type":"typeof WeakRef"},
-    {"name":"WeakSet","type":"typeof WeakSet"},
-    {"name":"WebGLContextEvent","type":"typeof WebGLContextEvent"},
-    {"name":"WebGLRenderingContext","type":"typeof WebGLRenderingContext"},
-    {"name":"WheelEvent","type":"typeof WheelEvent"},
-    {"name":"WritableStream","type":"typeof WritableStream"},
-    {
-      "name":"WritableStreamDefaultWriter",
-      "type":"typeof WritableStreamDefaultWriter"
-    },
-    {"name":"WriteableStream","type":"typeof WriteableStream"}
+    {"name":"WeakSet","type":"typeof WeakSet"}
   ]
 }
 
diff --git a/tests/component_syntax/component_syntax.exp b/tests/component_syntax/component_syntax.exp
index 0f4b080ef0c..73ee101ce9d 100644
--- a/tests/component_syntax/component_syntax.exp
+++ b/tests/component_syntax/component_syntax.exp
@@ -3196,13 +3196,12 @@ References:
 Error --------------------------------------------------------------------------------------------------- refs.js:105:23
 
 Cannot create `GenericRef1` element because in property `ref`: [incompatible-type]
- - Either `HTMLElement` [1] is not a subtype of object type [2]. Class instances are not subtypes of object types;
-   consider rewriting object type [2] as an interface.
- - Or `HTMLElement` [1] is incompatible with function type [3]. Non-callable objects are not compatible with functions.
+ - Either number [1] is incompatible with object type [2].
+ - Or number [1] is incompatible with function type [3].
 
    refs.js:105:23
-   105|     <GenericRef1 ref={new HTMLElement()} />; // error
-                              ^^^^^^^^^^^^^^^^^ [1]
+   105|     <GenericRef1 ref={1} />; // error
+                              ^ [1]
 
 References:
    <BUILTINS>/react.js:113:5
diff --git a/tests/component_syntax/refs.js b/tests/component_syntax/refs.js
index 4de27ce1159..64ded3df250 100644
--- a/tests/component_syntax/refs.js
+++ b/tests/component_syntax/refs.js
@@ -102,7 +102,7 @@ import * as React from 'react';
 
     <GenericRef1 ref={(r: string | null) => {}} />; // ok
     <GenericRef1 ref={(r: number | null) => {}} />; // ok
-    <GenericRef1 ref={new HTMLElement()} />; // error
+    <GenericRef1 ref={1} />; // error
     <GenericRef2 ref={(r: Array<Array<Array<string>>> | null) => {}} />; // ok
     <GenericRef2 ref={(r: Array<Array<Array<number>>> | null) => {}} />; // ok
     <GenericRef2 ref={(r: string | null) => {}} />; // error
diff --git a/tests/declare_namespace/declare_namespace.exp b/tests/declare_namespace/declare_namespace.exp
index 251a66ba4db..9b8b35090c8 100644
--- a/tests/declare_namespace/declare_namespace.exp
+++ b/tests/declare_namespace/declare_namespace.exp
@@ -471,48 +471,54 @@ Cannot resolve name `React`. [cannot-resolve-name]
 
 Error --------------------------------------------------------------------------------- type_only_react_namespace.js:5:3
 
-Cannot cast `new HTMLAnchorElement()` to `Node` because: [incompatible-cast]
- - Either `HTMLAnchorElement` [1] is incompatible with `React.Element` [2].
- - Or `HTMLAnchorElement` [1] is incompatible with `React.Portal` [3].
- - Or property `@@iterator` is missing in `HTMLAnchorElement` [1] but exists in `$Iterable` [4].
+Cannot cast `Array` to `Node` because: [incompatible-cast]
+ - Either class `Array` [1] is incompatible with `React.Element` [2].
+ - Or class `Array` [1] is incompatible with `React.Portal` [3].
+ - Or property `@@iterator` is missing in class `Array` [1] but exists in `$Iterable` [4].
 
    type_only_react_namespace.js:5:3
-    5|   new HTMLAnchorElement() as React.Node; // error
-         ^^^^^^^^^^^^^^^^^^^^^^^ [1]
+     5|   Array as React.Node; // error
+          ^^^^^
 
 References:
+   <BUILTINS>/core.js:946:15
+   946| declare class Array<T> extends $ReadOnlyArray<T> {
+                      ^^^^^ [1]
    <BUILTINS>/react.js:21:5
-   21|   | React$Element<any>
-           ^^^^^^^^^^^^^^^^^^ [2]
+    21|   | React$Element<any>
+            ^^^^^^^^^^^^^^^^^^ [2]
    <BUILTINS>/react.js:22:5
-   22|   | React$Portal
-           ^^^^^^^^^^^^ [3]
+    22|   | React$Portal
+            ^^^^^^^^^^^^ [3]
    <BUILTINS>/react.js:23:5
-   23|   | Iterable<?React$Node>;
-           ^^^^^^^^^^^^^^^^^^^^^ [4]
+    23|   | Iterable<?React$Node>;
+            ^^^^^^^^^^^^^^^^^^^^^ [4]
 
 
 Error -------------------------------------------------------------------------------- type_only_react_namespace.js:12:3
 
-Cannot cast `new HTMLAnchorElement()` to `Node` because: [incompatible-cast]
- - Either `HTMLAnchorElement` [1] is incompatible with `React.Element` [2].
- - Or `HTMLAnchorElement` [1] is incompatible with `React.Portal` [3].
- - Or property `@@iterator` is missing in `HTMLAnchorElement` [1] but exists in `$Iterable` [4].
+Cannot cast `Array` to `Node` because: [incompatible-cast]
+ - Either class `Array` [1] is incompatible with `React.Element` [2].
+ - Or class `Array` [1] is incompatible with `React.Portal` [3].
+ - Or property `@@iterator` is missing in class `Array` [1] but exists in `$Iterable` [4].
 
    type_only_react_namespace.js:12:3
-   12|   new HTMLAnchorElement() as React.Node; // error
-         ^^^^^^^^^^^^^^^^^^^^^^^ [1]
+    12|   Array as React.Node; // error
+          ^^^^^
 
 References:
+   <BUILTINS>/core.js:946:15
+   946| declare class Array<T> extends $ReadOnlyArray<T> {
+                      ^^^^^ [1]
    <BUILTINS>/react.js:21:5
-   21|   | React$Element<any>
-           ^^^^^^^^^^^^^^^^^^ [2]
+    21|   | React$Element<any>
+            ^^^^^^^^^^^^^^^^^^ [2]
    <BUILTINS>/react.js:22:5
-   22|   | React$Portal
-           ^^^^^^^^^^^^ [3]
+    22|   | React$Portal
+            ^^^^^^^^^^^^ [3]
    <BUILTINS>/react.js:23:5
-   23|   | Iterable<?React$Node>;
-           ^^^^^^^^^^^^^^^^^^^^^ [4]
+    23|   | Iterable<?React$Node>;
+            ^^^^^^^^^^^^^^^^^^^^^ [4]
 
 
 Error ----------------------------------------------------------------------------------------------- typing_test.js:7:1
diff --git a/tests/declare_namespace/type_only_react_namespace.js b/tests/declare_namespace/type_only_react_namespace.js
index 1ae06fbf56f..42cfe145a30 100644
--- a/tests/declare_namespace/type_only_react_namespace.js
+++ b/tests/declare_namespace/type_only_react_namespace.js
@@ -2,12 +2,12 @@
   <div />; // ok
   React; // error
   1 as React.Node;
-  new HTMLAnchorElement() as React.Node; // error
+  Array as React.Node; // error
 }
 {
   const React = require('react');
   <div /> as React.Node; // ok
   React; // error
   1 as React.Node;
-  new HTMLAnchorElement() as React.Node; // error
+  Array as React.Node; // error
 }
diff --git a/tests/global_this/global_this.exp b/tests/global_this/global_this.exp
index dffc71eb8c4..c6115b376bf 100644
--- a/tests/global_this/global_this.exp
+++ b/tests/global_this/global_this.exp
@@ -69,28 +69,28 @@ References:
 
 Error ----------------------------------------------------------------------------------------------------- test.js:10:1
 
-Cannot cast `HTMLElement` to `Node` because: [incompatible-cast]
- - Either class `HTMLElement` [1] is incompatible with `React.Element` [2].
- - Or class `HTMLElement` [1] is incompatible with `React.Portal` [3].
- - Or property `@@iterator` is missing in class `HTMLElement` [1] but exists in `$Iterable` [4].
+Cannot cast `Array` to `Node` because: [incompatible-cast]
+ - Either class `Array` [1] is incompatible with `React.Element` [2].
+ - Or class `Array` [1] is incompatible with `React.Portal` [3].
+ - Or property `@@iterator` is missing in class `Array` [1] but exists in `$Iterable` [4].
 
    test.js:10:1
-     10| HTMLElement as globalThis.React.Node; // error
-         ^^^^^^^^^^^
+    10| Array as globalThis.React.Node; // error
+        ^^^^^
 
 References:
-   <BUILTINS>/dom.js:2092:15
-   2092| declare class HTMLElement extends Element {
-                       ^^^^^^^^^^^ [1]
+   <BUILTINS>/core.js:946:15
+   946| declare class Array<T> extends $ReadOnlyArray<T> {
+                      ^^^^^ [1]
    <BUILTINS>/react.js:21:5
-     21|   | React$Element<any>
-             ^^^^^^^^^^^^^^^^^^ [2]
+    21|   | React$Element<any>
+            ^^^^^^^^^^^^^^^^^^ [2]
    <BUILTINS>/react.js:22:5
-     22|   | React$Portal
-             ^^^^^^^^^^^^ [3]
+    22|   | React$Portal
+            ^^^^^^^^^^^^ [3]
    <BUILTINS>/react.js:23:5
-     23|   | Iterable<?React$Node>;
-             ^^^^^^^^^^^^^^^^^^^^^ [4]
+    23|   | Iterable<?React$Node>;
+            ^^^^^^^^^^^^^^^^^^^^^ [4]
 
 
 
diff --git a/tests/global_this/test.js b/tests/global_this/test.js
index b423372f85c..0f7607fc707 100644
--- a/tests/global_this/test.js
+++ b/tests/global_this/test.js
@@ -7,4 +7,4 @@ window.myGlobal as globalThis.Opaque; // ok: this is weird, but TS also supports
 window.myGlobal as empty; // error
 globalThis.myGlobal as empty; // error
 
-HTMLElement as globalThis.React.Node; // error
+Array as globalThis.React.Node; // error
diff --git a/tests/new_merge_diff/new_merge_diff.exp b/tests/new_merge_diff/new_merge_diff.exp
index 3dfb1fee99b..bd8fca82857 100644
--- a/tests/new_merge_diff/new_merge_diff.exp
+++ b/tests/new_merge_diff/new_merge_diff.exp
@@ -78,6 +78,11 @@ Error --------------------------------------------------------------------------
 Invalid trivially recursive definition of exports.  [recursive-definition]
 
 
+Error ---------------------------------------------------------------------------------- recursive_module_cycle_B.js:0:1
+
+Invalid trivially recursive definition of exports.  [recursive-definition]
+
+
 Error ------------------------------------------------------------------------------------------ recursive_types.js:1:14
 
 Invalid type annotation for `x`. It contains a reference [1] to the binding being declared. [recursive-definition]
@@ -169,7 +174,7 @@ Invalid trivially recursive definition of object type.  [recursive-definition]
 
 
 
-Found 15 errors
+Found 16 errors
 
 Only showing the most relevant union/intersection branches.
 To see all branches, re-run Flow with --show-all-branches
diff --git a/tests/quick_start/quick_start.exp b/tests/quick_start/quick_start.exp
index 3331c37487f..fe46419033c 100644
--- a/tests/quick_start/quick_start.exp
+++ b/tests/quick_start/quick_start.exp
@@ -6,7 +6,7 @@ Quick start.
 Expect no errors.
 No errors!
 
-The Flow server is currently in lazy mode and is only checking 7/8 files.
+The Flow server is currently in lazy mode and is only checking 3/4 files.
 To learn more, visit flow.org/en/docs/lang/lazy-modes
 
 Change @flow file, expect error.
@@ -27,13 +27,13 @@ References:
 
 Found 1 error
 
-The Flow server is currently in lazy mode and is only checking 8/8 files.
+The Flow server is currently in lazy mode and is only checking 4/4 files.
 To learn more, visit flow.org/en/docs/lang/lazy-modes
 
 Make file @noflow, expect error to go away.
 No errors!
 
-The Flow server is currently in lazy mode and is only checking 7/7 files.
+The Flow server is currently in lazy mode and is only checking 3/3 files.
 To learn more, visit flow.org/en/docs/lang/lazy-modes
 
 Revert file, expect error again.
@@ -54,7 +54,7 @@ References:
 
 Found 1 error
 
-The Flow server is currently in lazy mode and is only checking 8/8 files.
+The Flow server is currently in lazy mode and is only checking 4/4 files.
 To learn more, visit flow.org/en/docs/lang/lazy-modes
 
 Done!
diff --git a/tests/quick_start_add_dependency/quick_start_add_dependency.exp b/tests/quick_start_add_dependency/quick_start_add_dependency.exp
index 2ec44930a5c..1cd00aa68b9 100644
--- a/tests/quick_start_add_dependency/quick_start_add_dependency.exp
+++ b/tests/quick_start_add_dependency/quick_start_add_dependency.exp
@@ -6,13 +6,13 @@ Quick start.
 Expect no errors.
 No errors!
 
-The Flow server is currently in lazy mode and is only checking 7/9 files.
+The Flow server is currently in lazy mode and is only checking 3/5 files.
 To learn more, visit flow.org/en/docs/lang/lazy-modes
 
 Change @flow file with dependency on a @flow file, expect no error.
 No errors!
 
-The Flow server is currently in lazy mode and is only checking 9/9 files.
+The Flow server is currently in lazy mode and is only checking 5/5 files.
 To learn more, visit flow.org/en/docs/lang/lazy-modes
 
 Done!
diff --git a/tests/quick_start_add_dependency_on_cycle/quick_start_add_dependency_on_cycle.exp b/tests/quick_start_add_dependency_on_cycle/quick_start_add_dependency_on_cycle.exp
index 57134574218..052201d82a9 100644
--- a/tests/quick_start_add_dependency_on_cycle/quick_start_add_dependency_on_cycle.exp
+++ b/tests/quick_start_add_dependency_on_cycle/quick_start_add_dependency_on_cycle.exp
@@ -6,13 +6,13 @@ Quick start.
 Expect no errors.
 No errors!
 
-The Flow server is currently in lazy mode and is only checking 7/10 files.
+The Flow server is currently in lazy mode and is only checking 3/6 files.
 To learn more, visit flow.org/en/docs/lang/lazy-modes
 
 Change @flow file with dependency on a @flow file in a cycle, expect no error.
 No errors!
 
-The Flow server is currently in lazy mode and is only checking 9/10 files.
+The Flow server is currently in lazy mode and is only checking 5/6 files.
 To learn more, visit flow.org/en/docs/lang/lazy-modes
 
 Done!
diff --git a/tests/quick_start_check_contents/quick_start_check_contents.exp b/tests/quick_start_check_contents/quick_start_check_contents.exp
index 9cea0ce7c39..1262e30fa42 100644
--- a/tests/quick_start_check_contents/quick_start_check_contents.exp
+++ b/tests/quick_start_check_contents/quick_start_check_contents.exp
@@ -6,7 +6,7 @@ Quick start.
 Expect no errors.
 No errors!
 
-The Flow server is currently in lazy mode and is only checking 7/12 files.
+The Flow server is currently in lazy mode and is only checking 3/8 files.
 To learn more, visit flow.org/en/docs/lang/lazy-modes
 
 Check contents with dependency, expect errors in contents.
@@ -33,7 +33,7 @@ Found 1 error
 No error in dependency (it is not checked).
 No errors!
 
-The Flow server is currently in lazy mode and is only checking 8/12 files.
+The Flow server is currently in lazy mode and is only checking 4/8 files.
 To learn more, visit flow.org/en/docs/lang/lazy-modes
 
 Unsaved files don't have dependents, as in non-lazy mode.
diff --git a/tests/quick_start_delete_dependency/quick_start_delete_dependency.exp b/tests/quick_start_delete_dependency/quick_start_delete_dependency.exp
index 3e86e0a7ed9..32e5f9acb37 100644
--- a/tests/quick_start_delete_dependency/quick_start_delete_dependency.exp
+++ b/tests/quick_start_delete_dependency/quick_start_delete_dependency.exp
@@ -6,7 +6,7 @@ Quick start.
 Expect no errors.
 No errors!
 
-The Flow server is currently in lazy mode and is only checking 7/9 files.
+The Flow server is currently in lazy mode and is only checking 3/5 files.
 To learn more, visit flow.org/en/docs/lang/lazy-modes
 
 Delete @flow file with a @flow dependent file, expect error.
@@ -21,13 +21,13 @@ Cannot resolve module `./a`. [cannot-resolve-module]
 
 Found 1 error
 
-The Flow server is currently in lazy mode and is only checking 8/8 files.
+The Flow server is currently in lazy mode and is only checking 4/4 files.
 To learn more, visit flow.org/en/docs/lang/lazy-modes
 
 Revert file, expect no errors.
 No errors!
 
-The Flow server is currently in lazy mode and is only checking 9/9 files.
+The Flow server is currently in lazy mode and is only checking 5/5 files.
 To learn more, visit flow.org/en/docs/lang/lazy-modes
 
 Done!
diff --git a/tests/quick_start_unchecked_dependency/quick_start_unchecked_dependency.exp b/tests/quick_start_unchecked_dependency/quick_start_unchecked_dependency.exp
index c036d7dc4b6..05b1b2141c6 100644
--- a/tests/quick_start_unchecked_dependency/quick_start_unchecked_dependency.exp
+++ b/tests/quick_start_unchecked_dependency/quick_start_unchecked_dependency.exp
@@ -6,25 +6,25 @@ Quick start.
 Expect no errors.
 No errors!
 
-The Flow server is currently in lazy mode and is only checking 7/12 files.
+The Flow server is currently in lazy mode and is only checking 3/8 files.
 To learn more, visit flow.org/en/docs/lang/lazy-modes
 
 "Warm up" a dependency.
 No errors!
 
-The Flow server is currently in lazy mode and is only checking 9/12 files.
+The Flow server is currently in lazy mode and is only checking 5/8 files.
 To learn more, visit flow.org/en/docs/lang/lazy-modes
 
 "Perturb" a dependent that depends on the warmed up, but unchanged dependency.
 No errors!
 
-The Flow server is currently in lazy mode and is only checking 10/12 files.
+The Flow server is currently in lazy mode and is only checking 6/8 files.
 To learn more, visit flow.org/en/docs/lang/lazy-modes
 
 Test that the perturbed dependent is actually known (expecting a crash otherwise).
 No errors!
 
-The Flow server is currently in lazy mode and is only checking 12/12 files.
+The Flow server is currently in lazy mode and is only checking 8/8 files.
 To learn more, visit flow.org/en/docs/lang/lazy-modes
 
 Done!
diff --git a/tests/react_ref_as_prop/react_ref_as_prop.exp b/tests/react_ref_as_prop/react_ref_as_prop.exp
index 3db894db99c..f1839969fbf 100644
--- a/tests/react_ref_as_prop/react_ref_as_prop.exp
+++ b/tests/react_ref_as_prop/react_ref_as_prop.exp
@@ -1,3 +1,35 @@
+Error ------------------------------------------------------------------------------ component_syntax_components.js:2:85
+
+Cannot resolve name `HTMLElement`. [cannot-resolve-name]
+
+   2| declare export component CompWithOptionalRefProp(foo: string, ref?: React.RefSetter<HTMLElement>);
+                                                                                          ^^^^^^^^^^^
+
+
+Error ------------------------------------------------------------------------------ component_syntax_components.js:3:84
+
+Cannot resolve name `HTMLElement`. [cannot-resolve-name]
+
+   3| declare export component CompWithRequiredRefProp(foo: string, ref: React.RefSetter<HTMLElement>);
+                                                                                         ^^^^^^^^^^^
+
+
+Error -------------------------------------------------------------------------------------------- fn_components.js:2:90
+
+Cannot resolve name `HTMLElement`. [cannot-resolve-name]
+
+   2| declare export function FnWithOptionalRefProp(props: {foo: string, ref?: React.RefSetter<HTMLElement>}): React.Node;
+                                                                                               ^^^^^^^^^^^
+
+
+Error -------------------------------------------------------------------------------------------- fn_components.js:3:89
+
+Cannot resolve name `HTMLElement`. [cannot-resolve-name]
+
+   3| declare export function FnWithRequiredRefProp(props: {foo: string, ref: React.RefSetter<HTMLElement>}): React.Node;
+                                                                                              ^^^^^^^^^^^
+
+
 Error ----------------------------------------------------------------------------------- implicit_instantiation.js:14:2
 
 Cannot cast object literal to `React.ElementConfig` because property `foo` is missing in object literal [1] but exists
@@ -57,32 +89,20 @@ References:
                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [2]
 
 
-Error ----------------------------------------------------------------------------------- implicit_instantiation.js:20:1
-
-Cannot cast `null` to `React.ElementRef` because null [1] is incompatible with `HTMLElement` [2]. [incompatible-cast]
+Error ----------------------------------------------------------------------------------- implicit_instantiation.js:19:5
 
-   implicit_instantiation.js:20:1
-   20| null as React.ElementRef<typeof IdMappedFnWithOptionalRefProp>; // error: null ~> HTMLElement
-       ^^^^ [1]
-
-References:
-   implicit_instantiation.js:20:9
-   20| null as React.ElementRef<typeof IdMappedFnWithOptionalRefProp>; // error: null ~> HTMLElement
-               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [2]
+Cannot resolve name `HTMLElement`. [cannot-resolve-name]
 
+   19| new HTMLElement() as React.ElementRef<typeof IdMappedFnWithOptionalRefProp>; // ok
+           ^^^^^^^^^^^
 
-Error ----------------------------------------------------------------------------------- implicit_instantiation.js:22:1
 
-Cannot cast `null` to `React.ElementRef` because null [1] is incompatible with `HTMLElement` [2]. [incompatible-cast]
+Error ----------------------------------------------------------------------------------- implicit_instantiation.js:21:5
 
-   implicit_instantiation.js:22:1
-   22| null as React.ElementRef<typeof IdMappedFnWithRequiredRefProp>; // error: null ~> HTMLElement
-       ^^^^ [1]
+Cannot resolve name `HTMLElement`. [cannot-resolve-name]
 
-References:
-   implicit_instantiation.js:22:9
-   22| null as React.ElementRef<typeof IdMappedFnWithRequiredRefProp>; // error: null ~> HTMLElement
-               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [2]
+   21| new HTMLElement() as React.ElementRef<typeof IdMappedFnWithRequiredRefProp>; // ok
+           ^^^^^^^^^^^
 
 
 Error ----------------------------------------------------------------------------------- implicit_instantiation.js:33:2
@@ -145,32 +165,20 @@ References:
                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [2]
 
 
-Error ----------------------------------------------------------------------------------- implicit_instantiation.js:39:1
+Error ----------------------------------------------------------------------------------- implicit_instantiation.js:38:5
 
-Cannot cast `null` to `React.ElementRef` because null [1] is incompatible with `HTMLElement` [2]. [incompatible-cast]
+Cannot resolve name `HTMLElement`. [cannot-resolve-name]
 
-   implicit_instantiation.js:39:1
-   39| null as React.ElementRef<typeof IdMappedCompWithOptionalRefProp>; // error: null ~> HTMLElement
-       ^^^^ [1]
+   38| new HTMLElement() as React.ElementRef<typeof IdMappedCompWithOptionalRefProp>; // ok
+           ^^^^^^^^^^^
 
-References:
-   implicit_instantiation.js:39:9
-   39| null as React.ElementRef<typeof IdMappedCompWithOptionalRefProp>; // error: null ~> HTMLElement
-               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [2]
 
+Error ----------------------------------------------------------------------------------- implicit_instantiation.js:40:5
 
-Error ----------------------------------------------------------------------------------- implicit_instantiation.js:41:1
+Cannot resolve name `HTMLElement`. [cannot-resolve-name]
 
-Cannot cast `null` to `React.ElementRef` because null [1] is incompatible with `HTMLElement` [2]. [incompatible-cast]
-
-   implicit_instantiation.js:41:1
-   41| null as React.ElementRef<typeof IdMappedCompWithRequiredRefProp>; // error: null ~> HTMLElement
-       ^^^^ [1]
-
-References:
-   implicit_instantiation.js:41:9
-   41| null as React.ElementRef<typeof IdMappedCompWithRequiredRefProp>; // error: null ~> HTMLElement
-               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [2]
+   40| new HTMLElement() as React.ElementRef<typeof IdMappedCompWithRequiredRefProp>; // ok
+           ^^^^^^^^^^^
 
 
 Error ---------------------------------------------------------------------------------------------- jsx_checking.js:6:2
@@ -224,48 +232,28 @@ References:
       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [2]
 
 
-Error -------------------------------------------------------------------------------------------- jsx_checking.js:10:39
+Error --------------------------------------------------------------------------------------------- jsx_checking.js:8:39
 
-Cannot create `FnWithOptionalRefProp` element because in property `ref`: [incompatible-type]
- - Either string [1] is incompatible with `HTMLElement` [2] in the first parameter.
- - Or function [3] is incompatible with object type [4]. Functions without statics are not compatible with objects.
+Cannot resolve name `HTMLElement`. [cannot-resolve-name]
 
-   jsx_checking.js:10:39
-    10| <FnWithOptionalRefProp foo="bar" ref={(_: ?string) => {}} />; // error: string ~> HTMLElement, ref checking still works
-                                              ^^^^^^^^^^^^^^^^^^ [3]
+   8| <FnWithoutRefProp foo="bar" ref={(_: ?HTMLElement) => {}} />; // error: extra ref prop
+                                            ^^^^^^^^^^^
 
-References:
-   jsx_checking.js:10:44
-    10| <FnWithOptionalRefProp foo="bar" ref={(_: ?string) => {}} />; // error: string ~> HTMLElement, ref checking still works
-                                                   ^^^^^^ [1]
-   fn_components.js:2:90
-     2| declare export function FnWithOptionalRefProp(props: {foo: string, ref?: React.RefSetter<HTMLElement>}): React.Node;
-                                                                                                 ^^^^^^^^^^^ [2]
-   <BUILTINS>/react.js:113:5
-   113|   | { -current: T | null, ... }
-            ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [4]
 
+Error --------------------------------------------------------------------------------------------- jsx_checking.js:9:44
 
-Error -------------------------------------------------------------------------------------------- jsx_checking.js:12:39
+Cannot resolve name `HTMLElement`. [cannot-resolve-name]
 
-Cannot create `FnWithRequiredRefProp` element because in property `ref`: [incompatible-type]
- - Either string [1] is incompatible with `HTMLElement` [2] in the first parameter.
- - Or function [3] is incompatible with object type [4]. Functions without statics are not compatible with objects.
+   9| <FnWithOptionalRefProp foo="bar" ref={(_: ?HTMLElement) => {}} />; // ok
+                                                 ^^^^^^^^^^^
 
-   jsx_checking.js:12:39
-    12| <FnWithRequiredRefProp foo="bar" ref={(_: ?string) => {}} />; // error: string ~> HTMLElement, ref checking still works
-                                              ^^^^^^^^^^^^^^^^^^ [3]
 
-References:
-   jsx_checking.js:12:44
-    12| <FnWithRequiredRefProp foo="bar" ref={(_: ?string) => {}} />; // error: string ~> HTMLElement, ref checking still works
-                                                   ^^^^^^ [1]
-   fn_components.js:3:89
-     3| declare export function FnWithRequiredRefProp(props: {foo: string, ref: React.RefSetter<HTMLElement>}): React.Node;
-                                                                                                ^^^^^^^^^^^ [2]
-   <BUILTINS>/react.js:113:5
-   113|   | { -current: T | null, ... }
-            ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [4]
+Error -------------------------------------------------------------------------------------------- jsx_checking.js:11:44
+
+Cannot resolve name `HTMLElement`. [cannot-resolve-name]
+
+   11| <FnWithRequiredRefProp foo="bar" ref={(_: ?HTMLElement) => {}} />; // ok
+                                                  ^^^^^^^^^^^
 
 
 Error -------------------------------------------------------------------------------------------- jsx_checking.js:17:26
@@ -301,48 +289,28 @@ References:
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [2]
 
 
-Error -------------------------------------------------------------------------------------------- jsx_checking.js:20:41
+Error -------------------------------------------------------------------------------------------- jsx_checking.js:18:41
+
+Cannot resolve name `HTMLElement`. [cannot-resolve-name]
 
-Cannot create `CompWithOptionalRefProp` element because in property `ref`: [incompatible-type]
- - Either string [1] is incompatible with `HTMLElement` [2] in the first parameter.
- - Or function [3] is incompatible with object type [4]. Functions without statics are not compatible with objects.
+   18| <CompWithoutRefProp foo="bar" ref={(_: ?HTMLElement) => {}} />; // error: extra ref prop
+                                               ^^^^^^^^^^^
 
-   jsx_checking.js:20:41
-    20| <CompWithOptionalRefProp foo="bar" ref={(_: ?string) => {}} />; // error: string ~> HTMLElement, ref checking still works
-                                                ^^^^^^^^^^^^^^^^^^ [3]
 
-References:
-   jsx_checking.js:20:46
-    20| <CompWithOptionalRefProp foo="bar" ref={(_: ?string) => {}} />; // error: string ~> HTMLElement, ref checking still works
-                                                     ^^^^^^ [1]
-   component_syntax_components.js:2:85
-     2| declare export component CompWithOptionalRefProp(foo: string, ref?: React.RefSetter<HTMLElement>);
-                                                                                            ^^^^^^^^^^^ [2]
-   <BUILTINS>/react.js:113:5
-   113|   | { -current: T | null, ... }
-            ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [4]
+Error -------------------------------------------------------------------------------------------- jsx_checking.js:19:46
 
+Cannot resolve name `HTMLElement`. [cannot-resolve-name]
 
-Error -------------------------------------------------------------------------------------------- jsx_checking.js:22:41
+   19| <CompWithOptionalRefProp foo="bar" ref={(_: ?HTMLElement) => {}} />; // ok
+                                                    ^^^^^^^^^^^
 
-Cannot create `CompWithRequiredRefProp` element because in property `ref`: [incompatible-type]
- - Either string [1] is incompatible with `HTMLElement` [2] in the first parameter.
- - Or function [3] is incompatible with object type [4]. Functions without statics are not compatible with objects.
 
-   jsx_checking.js:22:41
-    22| <CompWithRequiredRefProp foo="bar" ref={(_: ?string) => {}} />; // error: string ~> HTMLElement, ref checking still works
-                                                ^^^^^^^^^^^^^^^^^^ [3]
+Error -------------------------------------------------------------------------------------------- jsx_checking.js:21:46
 
-References:
-   jsx_checking.js:22:46
-    22| <CompWithRequiredRefProp foo="bar" ref={(_: ?string) => {}} />; // error: string ~> HTMLElement, ref checking still works
-                                                     ^^^^^^ [1]
-   component_syntax_components.js:3:84
-     3| declare export component CompWithRequiredRefProp(foo: string, ref: React.RefSetter<HTMLElement>);
-                                                                                           ^^^^^^^^^^^ [2]
-   <BUILTINS>/react.js:113:5
-   113|   | { -current: T | null, ... }
-            ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [4]
+Cannot resolve name `HTMLElement`. [cannot-resolve-name]
+
+   21| <CompWithRequiredRefProp foo="bar" ref={(_: ?HTMLElement) => {}} />; // ok
+                                                    ^^^^^^^^^^^
 
 
 Error ------------------------------------------------------------------------------------------------ subtyping.js:14:1
@@ -364,7 +332,4 @@ References:
 
 
 
-Found 22 errors
-
-Only showing the most relevant union/intersection branches.
-To see all branches, re-run Flow with --show-all-branches
+Found 28 errors
diff --git a/tests/react_rules/ref_read_different_type.js b/tests/react_rules/ref_read_different_type.js
index f2b9e6faaaa..9228faa1629 100644
--- a/tests/react_rules/ref_read_different_type.js
+++ b/tests/react_rules/ref_read_different_type.js
@@ -1,4 +1,4 @@
-component Foo(otherRef: { current: HTMLElement | null }) {
+component Foo(otherRef: { current: interface {} | null }) {
     otherRef.current; // error
     return null;
 }
diff --git a/tests/union/union.js b/tests/union/union.js
index 14937656969..c2a638acd39 100644
--- a/tests/union/union.js
+++ b/tests/union/union.js
@@ -10,3 +10,5 @@ function CD(b: boolean) {
   function qux2(e: C | D) { } // OK
   qux2(new C);
 }
+
+declare opaque type Document;