From a5d18304f1c84d9a7de2975ed15c71ccf1f3dee8 Mon Sep 17 00:00:00 2001
From: Mattias Buelens <mattias@buelens.com>
Date: Sun, 14 Jan 2024 22:45:50 +0100
Subject: [PATCH] Remove IteratorComplete and IteratorValue

---
 src/lib/abstract-ops/ecmascript.ts | 11 -----------
 src/lib/readable-stream/from.ts    |  6 +++---
 2 files changed, 3 insertions(+), 14 deletions(-)

diff --git a/src/lib/abstract-ops/ecmascript.ts b/src/lib/abstract-ops/ecmascript.ts
index 6a07db4..1416fbf 100644
--- a/src/lib/abstract-ops/ecmascript.ts
+++ b/src/lib/abstract-ops/ecmascript.ts
@@ -168,14 +168,3 @@ export function IteratorNext<T>(iteratorRecord: AsyncIteratorRecord<T>): Promise
   return result;
 }
 
-export function IteratorComplete<TReturn>(
-  iterResult: IteratorResult<unknown, TReturn>
-): iterResult is IteratorReturnResult<TReturn> {
-  assert(typeIsObject(iterResult));
-  return Boolean(iterResult.done);
-}
-
-export function IteratorValue<T>(iterResult: IteratorYieldResult<T>): T {
-  assert(typeIsObject(iterResult));
-  return iterResult.value;
-}
diff --git a/src/lib/readable-stream/from.ts b/src/lib/readable-stream/from.ts
index 2d0f0a6..53d1194 100644
--- a/src/lib/readable-stream/from.ts
+++ b/src/lib/readable-stream/from.ts
@@ -5,7 +5,7 @@ import {
   type ReadableStreamLike
 } from './readable-stream-like';
 import { ReadableStreamDefaultControllerClose, ReadableStreamDefaultControllerEnqueue } from './default-controller';
-import { GetIterator, GetMethod, IteratorComplete, IteratorNext, IteratorValue } from '../abstract-ops/ecmascript';
+import { GetIterator, GetMethod, IteratorNext } from '../abstract-ops/ecmascript';
 import { promiseCall, promiseRejectedWith, promiseResolvedWith, transformPromiseWith } from '../helpers/webidl';
 import { typeIsObject } from '../helpers/miscellaneous';
 import { noop } from '../../utils';
@@ -37,11 +37,11 @@ export function ReadableStreamFromIterable<R>(asyncIterable: Iterable<R> | Async
       if (!typeIsObject(iterResult)) {
         throw new TypeError('The promise returned by the iterator.next() method must fulfill with an object');
       }
-      const done = IteratorComplete(iterResult);
+      const done = iterResult.done;
       if (done) {
         ReadableStreamDefaultControllerClose(stream._readableStreamController);
       } else {
-        const value = IteratorValue(iterResult);
+        const value = iterResult.value;
         ReadableStreamDefaultControllerEnqueue(stream._readableStreamController, value);
       }
     });