sync mode on

node_modules/thread-stream/test/port.js

@@ -0,0 +1,16 @@
+'use strict'
+
+const { Writable } = require('stream')
+
+function run (opts) {
+  const { port } = opts
+  return new Writable({
+    autoDestroy: true,
+    write (chunk, enc, cb) {
+      port.postMessage(chunk.toString())
+      cb()
+    }
+  })
+}
+
+module.exports = run