fixup

Author: ronag

lib/_stream_writable.js

@@ -482,15 +482,21 @@ function clearBuffer(stream, state) {
 
   state.bufferProcessing = true;
   if (bufferedLength === 1) {
-    const { chunk, encoding, callback } = buffered[0];
+    const chunk = buffered[0].chunk;
+    const encoding = buffered[0].encoding;
+    const callback = buffered[0].callback;
+
     const len = state.objectMode ? 1 : chunk.length;
     doWrite(stream, state, false, len, chunk, encoding, callback);
     buffered.length = 0;
     buffered.allBuffers = true;
   } else if (stream._writev) {
     state.pendingcb++;
     // doWrite mutates buffered array. Keep a copy of callbacks.
-    const callbacks = buffered.map(({ callback }) => callback);
+    const callbacks = [];
+    for (let n = 0; n < buffered.length; ++n) {
+      callbacks.push(buffered[n].callback);
+    }
     doWrite(stream, state, true, state.length, buffered, '', (err) => {
       for (const callback of callbacks) {
         state.pendingcb--;
@@ -501,8 +507,11 @@ function clearBuffer(stream, state) {
     state.buffered.allBuffers = true;
   } else {
     let i = 0;
-    while (i < bufferedLength && !state.writing) {
-      const { chunk, encoding, callback } = buffered[i++];
+    for (; i < bufferedLength && !state.writing; i++) {
+      const chunk = buffered[i].chunk;
+      const encoding = buffered[i].encoding;
+      const callback = buffered[i].callback;
+
       const len = state.objectMode ? 1 : chunk.length;
       doWrite(stream, state, false, len, chunk, encoding, callback);
     }