From 1dc3609ff22e6a7be4d86d2ba983f81dfd8c1fd4 Mon Sep 17 00:00:00 2001
From: Kenta Moriuchi <moriken@kimamass.com>
Date: Sun, 15 Jan 2023 13:26:05 +0900
Subject: fix(core): Add `Generator` and `AsyncGenerator` to promordials
 (#17241)

---
 ext/web/06_streams.js |  5 ++---
 ext/web/09_file.js    | 16 +++++++++++-----
 2 files changed, 13 insertions(+), 8 deletions(-)

(limited to 'ext')

diff --git a/ext/web/06_streams.js b/ext/web/06_streams.js
index 22baa1234..5b1c0141d 100644
--- a/ext/web/06_streams.js
+++ b/ext/web/06_streams.js
@@ -19,6 +19,7 @@
     ArrayPrototypeMap,
     ArrayPrototypePush,
     ArrayPrototypeShift,
+    AsyncGeneratorPrototype,
     BigInt64ArrayPrototype,
     BigUint64ArrayPrototype,
     DataView,
@@ -4439,9 +4440,7 @@
   }
 
   /** @type {AsyncIterator<unknown, unknown>} */
-  const asyncIteratorPrototype = ObjectGetPrototypeOf(
-    ObjectGetPrototypeOf(async function* () {}).prototype,
-  );
+  const asyncIteratorPrototype = ObjectGetPrototypeOf(AsyncGeneratorPrototype);
 
   const _iteratorNext = Symbol("[[iteratorNext]]");
   const _iteratorFinished = Symbol("[[iteratorFinished]]");
diff --git a/ext/web/09_file.js b/ext/web/09_file.js
index f789a24d2..0fc1e7e96 100644
--- a/ext/web/09_file.js
+++ b/ext/web/09_file.js
@@ -20,6 +20,7 @@
     ArrayBufferPrototypeSlice,
     ArrayBufferIsView,
     ArrayPrototypePush,
+    AsyncGeneratorPrototypeNext,
     Date,
     DatePrototypeGetTime,
     MathMax,
@@ -330,7 +331,9 @@
         /** @param {ReadableByteStreamController} controller */
         async pull(controller) {
           while (true) {
-            const { value, done } = await partIterator.next();
+            const { value, done } = await AsyncGeneratorPrototypeNext(
+              partIterator,
+            );
             if (done) return controller.close();
             if (value.byteLength > 0) {
               return controller.enqueue(value);
@@ -354,11 +357,14 @@
       const bytes = new Uint8Array(size);
       const partIterator = toIterator(this[_parts]);
       let offset = 0;
-      // deno-lint-ignore prefer-primordials
-      for await (const chunk of partIterator) {
-        const byteLength = chunk.byteLength;
+      while (true) {
+        const { value, done } = await AsyncGeneratorPrototypeNext(
+          partIterator,
+        );
+        if (done) break;
+        const byteLength = value.byteLength;
         if (byteLength > 0) {
-          TypedArrayPrototypeSet(bytes, chunk, offset);
+          TypedArrayPrototypeSet(bytes, value, offset);
           offset += byteLength;
         }
       }
-- 
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