// Copyright 2020 The Chromium Authors | |
// Use of this source code is governed by a BSD-style license that can be | |
// found in the LICENSE file. | |
onconnect = (event) => { | |
const port = event.ports[0]; | |
port.onmessage = (e) => { | |
if (e.data === 'ping') { | |
port.postMessage('pong'); | |
} | |
}; | |
}; |