fixup: allow overriding writableHighWaterMark

Author: ronag

lib/internal/streams/transform.js

@@ -95,11 +95,11 @@ function Transform(options) {
       ...options,
       highWaterMark: null,
       readableHighWaterMark,
-      // TODO (ronag) This is not optimal since we have
+      // TODO (ronag): 0 is not optimal since we have
       // a "bug" where we check needDrain before calling _write and not after.
       // Refs: https://github.com/nodejs/node/pull/32887
       // Refs: https://github.com/nodejs/node/pull/35941
-      writableHighWaterMark: 0
+      writableHighWaterMark: options.writableHighWaterMark || 0
     };
   }