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-rw-r--r--lib/internal/worker/io.js3
1 files changed, 2 insertions, 1 deletions
diff --git a/lib/internal/worker/io.js b/lib/internal/worker/io.js
index d249ba8508..ad8056b5b9 100644
--- a/lib/internal/worker/io.js
+++ b/lib/internal/worker/io.js
@@ -62,7 +62,8 @@ MessagePort.prototype.unref = MessagePortPrototype.unref;
// .onmessage events, and a function used for sending data to a MessagePort
// in some other thread.
MessagePort.prototype[kOnMessageListener] = function onmessage(payload) {
- debug(`[${threadId}] received message`, payload);
+ if (payload.type !== messageTypes.STDIO_WANTS_MORE_DATA)
+ debug(`[${threadId}] received message`, payload);
// Emit the deserialized object to userland.
this.emit('message', payload);
};