stream: ensure writable.destroy() emits error once

Prevent the `'error'` event from being emitted multiple times if
`writable.destroy()` is called with an error before the `_destroy()`
callback is called.

Emit the first error, discard all others.

PR-URL: https://github.com/nodejs/node/pull/26057
Fixes: https://github.com/nodejs/node/issues/26015
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: James M Snell <jasnell@gmail.com>

1 files changed, 14 insertions, 5 deletions

diff --git a/lib/internal/streams/destroy.js b/lib/internal/streams/destroy.js
index 0c652be9dd..200c75459a 100644
--- a/lib/internal/streams/destroy.js
+++ b/lib/internal/streams/destroy.js
@@ -10,10 +10,15 @@ function destroy(err, cb) {
   if (readableDestroyed || writableDestroyed) {
     if (cb) {
       cb(err);
-    } else if (err &&
-               (!this._writableState || !this._writableState.errorEmitted)) {
-      process.nextTick(emitErrorNT, this, err);
+    } else if (err) {
+      if (!this._writableState) {
+        process.nextTick(emitErrorNT, this, err);
+      } else if (!this._writableState.errorEmitted) {
+        this._writableState.errorEmitted = true;
+        process.nextTick(emitErrorNT, this, err);
+      }
     }
+
     return this;
   }
 
@@ -31,9 +36,13 @@ function destroy(err, cb) {
 
   this._destroy(err || null, (err) => {
     if (!cb && err) {
-      process.nextTick(emitErrorAndCloseNT, this, err);
-      if (this._writableState) {
+      if (!this._writableState) {
+        process.nextTick(emitErrorAndCloseNT, this, err);
+      } else if (!this._writableState.errorEmitted) {
         this._writableState.errorEmitted = true;
+        process.nextTick(emitErrorAndCloseNT, this, err);
+      } else {
+        process.nextTick(emitCloseNT, this);
       }
     } else if (cb) {
       process.nextTick(emitCloseNT, this);