Re: [whatwg/streams] Add @@asyncIterator to ReadableStream (#980)

domenic commented on this pull request.



> +    }
+    if (reader._readRequests.length > 0) {
+      return Promise.reject(new TypeError(
+        'Tried to release a reader lock when that reader has pending read() calls un-settled'));
+    }
+    if (this._preventCancel === false) {
+      const result = ReadableStreamReaderGenericCancel(reader, value);
+      ReadableStreamReaderGenericRelease(reader);
+      return result.then(() => ReadableStreamCreateReadResult(value, true, true));
+    }
+    ReadableStreamReaderGenericRelease(reader);
+    return Promise.resolve(ReadableStreamCreateReadResult(value, true, true));
+  }
+}, AsyncIteratorPrototype);
+
+ReadableStream.prototype[Symbol.asyncIterator] = ReadableStream.prototype.getIterator;

Yeah, non-enumerable please!

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