feat(fetch): accept async iterables for body (#24623)

Implements https://github.com/whatwg/webidl/pull/1397
Fixes #21454 
Closes #24849

1 files changed, 21 insertions, 0 deletions

diff --git a/ext/webidl/internal.d.ts b/ext/webidl/internal.d.ts
index 1ce45463e..d9266f5f5 100644
--- a/ext/webidl/internal.d.ts
+++ b/ext/webidl/internal.d.ts
@@ -439,6 +439,27 @@ declare module "ext:deno_webidl/00_webidl.js" {
   ) => T[];
 
   /**
+   * Create a converter that converts an async iterable of the inner type.
+   */
+  function createAsyncIterableConverter<V, T>(
+    converter: (
+      v: V,
+      prefix?: string,
+      context?: string,
+      opts?: any,
+    ) => T,
+  ): (
+    v: any,
+    prefix?: string,
+    context?: string,
+    opts?: any,
+  ) => ConvertedAsyncIterable<V, T>;
+
+  interface ConvertedAsyncIterable<V, T> extends AsyncIterableIterator<T> {
+    value: V;
+  }
+
+  /**
    * Create a converter that converts a Promise of the inner type.
    */
   function createPromiseConverter<T>(