diagnostics_channel.unsubscribe(name, onMessage)

• name <string> | <symbol> 通道名称
• onMessage <Function> 要移除的先前订阅的处理程序
• 返回：<boolean> 如果找到处理程序，则为 true，否则为 false。

移除之前使用 diagnostics_channel.subscribe(name, onMessage) 在此通道注册的消息处理程序。

【Remove a message handler previously registered to this channel with diagnostics_channel.subscribe(name, onMessage).】

import diagnostics_channel from 'diagnostics_channel';

function onMessage(message, name) {
  // Received data
}

diagnostics_channel.subscribe('my-channel', onMessage);

diagnostics_channel.unsubscribe('my-channel', onMessage);const diagnostics_channel = require('diagnostics_channel');

function onMessage(message, name) {
  // Received data
}

diagnostics_channel.subscribe('my-channel', onMessage);

diagnostics_channel.unsubscribe('my-channel', onMessage);拷贝