Re: [whatwg/streams] Execute strategySize first in write() (#680)

ricea commented on this pull request.



> @@ -654,7 +644,17 @@ function WritableStreamDefaultWriterRelease(writer) {
 function WritableStreamDefaultWriterWrite(writer, chunk) {
   const stream = writer._ownerWritableStream;
 
-  assert(stream !== undefined);
+  if (stream === undefined) {
+    return Promise.reject(defaultWriterLockException('write to'));
+  }
+
+  const controller = stream._writableStreamController;
+
+  const chunkSize = WritableStreamDefaultControllerGetChunkSize(controller, chunk);
+

I added tests to my wpt change and added the extra check here.

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