Fix URL type in Deno

Author: dsherret

ext/url/lib.deno_url.d.ts

@@ -5,6 +5,11 @@
 /// <reference no-default-lib="true" />
 /// <reference lib="esnext" />
 
+interface URLSearchParamsIterator<T>
+  extends IteratorObject<T, BuiltinIteratorReturn, unknown> {
+  [Symbol.iterator](): URLSearchParamsIterator<T>;
+}
+
 /** @category URL */
 interface URLSearchParams {
   /** Appends a specified key/value pair as a new search parameter.
@@ -102,7 +107,7 @@ interface URLSearchParams {
    * }
    * ```
    */
-  keys(): IterableIterator<string>;
+  keys(): URLSearchParamsIterator<string>;
 
   /** Returns an iterator allowing to go through all values contained
    * in this object.
@@ -114,7 +119,7 @@ interface URLSearchParams {
    * }
    * ```
    */
-  values(): IterableIterator<string>;
+  values(): URLSearchParamsIterator<string>;
 
   /** Returns an iterator allowing to go through all key/value
    * pairs contained in this object.
@@ -126,7 +131,7 @@ interface URLSearchParams {
    * }
    * ```
    */
-  entries(): IterableIterator<[string, string]>;
+  entries(): URLSearchParamsIterator<[string, string]>;
 
   /** Returns an iterator allowing to go through all key/value
    * pairs contained in this object.
@@ -138,7 +143,7 @@ interface URLSearchParams {
    * }
    * ```
    */
-  [Symbol.iterator](): IterableIterator<[string, string]>;
+  [Symbol.iterator](): URLSearchParamsIterator<[string, string]>;
 
   /** Returns a query string suitable for use in a URL.
    *
@@ -154,14 +159,14 @@ interface URLSearchParams {
    * searchParams.size
    * ```
    */
-  size: number;
+  readonly size: number;
 }
 
 /** @category URL */
 declare var URLSearchParams: {
   readonly prototype: URLSearchParams;
   new (
-    init?: Iterable<string[]> | Record<string, string> | string,
+    init?: Iterable<string[]> | Record<string, string> | string | URLSearchParams,
   ): URLSearchParams;
 };