Types refactoring

Author: slowcheetah

packages/core-js-types/src/base/core-js-types/async-iterator.d.ts

@@ -0,0 +1,22 @@
+interface AsyncIteratorObject<T, TReturn, TNext> extends AsyncIterator<T, TReturn, TNext> {
+  [Symbol.asyncIterator](): AsyncIteratorObject<T, TReturn, TNext>;
+}
+
+interface AsyncIterableIterator<T, TReturn, TNext> extends AsyncIterator<T, TReturn, TNext> {
+  [Symbol.asyncIterator](): AsyncIterableIterator<T, TReturn, TNext>;
+}
+
+interface AsyncIterator<T, TReturn = any, TNext = any> {
+  // NOTE: 'next' is defined using a tuple to ensure we report the correct assignability errors in all places.
+  next(...[value]: [] | [TNext]): Promise<IteratorResult<T, TReturn>>;
+  return?(value?: TReturn | PromiseLike<TReturn>): Promise<IteratorResult<T, TReturn>>;
+  throw?(e?: any): Promise<IteratorResult<T, TReturn>>;
+}
+
+interface AsyncIteratorConstructor {}
+
+declare var AsyncIterator: AsyncIteratorConstructor;
+
+interface AsyncIterable<T, TReturn = any, TNext = any> {
+  [Symbol.asyncIterator](): AsyncIterator<T, TReturn, TNext>;
+}

packages/core-js-types/src/base/core-js-types/core-js-types.d.ts

@@ -1,3 +1 @@
-declare namespace CoreJS {
-  export interface CoreJSIteratorObject<T, TReturn = any, TNext = any> extends Iterator<T, TReturn, TNext> {}
-}
+interface IteratorObject<T, TReturn, TNext> extends Iterator<T, TReturn, TNext> {}

packages/core-js-types/src/base/core-js-types/iterator-object.d.ts

@@ -1,4 +1,4 @@
-/// <reference types="../core-js-types/flat-array.d.ts" />
+/// <reference types="../core-js-types/flat-array" />
 
 // https://github.com/tc39/proposal-flatMap
 

packages/core-js-types/src/base/proposals/array-flat-map.d.ts

@@ -1,4 +1,4 @@
-/// <reference types="../core-js-types/core-js-types" />
+/// <reference types="../core-js-types/async-iterator" />
 
 // https://github.com/tc39/proposal-array-from-async
 

packages/core-js-types/src/base/proposals/array-from-async.d.ts

@@ -1,4 +1,4 @@
-/// <reference types="../core-js-types/core-js-types" />
+/// <reference types="../core-js-types/async-iterator" />
 
 // https://github.com/tc39/proposal-async-iterator-helpers
 

packages/core-js-types/src/base/proposals/async-iterator-helpers.d.ts

@@ -1,4 +1,4 @@
-/// <reference types="../core-js-types/iterator-object.ts" />
+/// <reference types="../core-js-types/iterator-object" />
 
 // https://github.com/tc39/proposal-iterator-chunking
 
@@ -9,13 +9,13 @@ interface Iterator<T> {
    * @param chunkSize - The maximum number of elements per chunk. Must be a positive integer.
    * @returns An iterator yielding arrays of at most `chunkSize` elements from the source iterator.
    */
-  chunks(chunkSize: number): CoreJS.CoreJSIteratorObject<T[]>;
+  chunks(chunkSize: number): IteratorObject<T[]>;
 
   /**
    * Yields overlapping arrays (windows) of the given size from the iterator.
    * @param windowSize - The size of each window. Must be a positive integer.
    * @param undersized - 'only-full' (default) to yield only full windows | 'allow-partial' to yield all windows.
    * @returns An iterator yielding arrays of the specified window size.
    */
-  windows(windowSize: number, undersized?: 'only-full' | 'allow-partial' | undefined): CoreJS.CoreJSIteratorObject<T[]>;
+  windows(windowSize: number, undersized?: 'only-full' | 'allow-partial' | undefined): IteratorObject<T[]>;
 }

packages/core-js-types/src/base/proposals/iterator-chunking.d.ts

@@ -1,4 +1,4 @@
-/// <reference types="../core-js-types/core-js-types" />
+/// <reference types="../core-js-types/iterator-object" />
 
 // https://github.com/tc39/proposal-iterator-helpers
 

packages/core-js-types/src/base/proposals/iterator-helpers.d.ts

@@ -1,4 +1,4 @@
-/// <reference types="../core-js-types/iterator-object.ts" />
+/// <reference types="../core-js-types/iterator-object" />
 
 // https://github.com/tc39/proposal-iterator-sequencing
 
@@ -8,7 +8,7 @@ interface IteratorConstructor { // @type-options: no-extends
    * @param iterators - The iterables to concatenate.
    * @returns An iterator yielding values from each input iterable in sequence.
    */
-  concat<T>(...iterators: Iterable<T>[]): CoreJS.CoreJSIteratorObject<T>;
+  concat<T>(...iterators: Iterable<T>[]): IteratorObject<T>;
 }
 
 declare var Iterator: IteratorConstructor;

packages/core-js-types/src/base/proposals/iterator-sequencing.d.ts

@@ -1,4 +1,4 @@
-/// <reference types="../proposals/iterator.ts" />
+/// <reference types="../proposals/iterator" />
 
 declare namespace CoreJS {
   export interface CoreJSIteratorObject<T, TReturn = any, TNext = any> extends CoreJSIterator<T, TReturn, TNext> {}