embark/lib/modules/plugin_cmd/index.js

class PluginCommand {
  constructor(embark) {
    this.embark = embark;
    this.registerCommands();
  }
  registerCommands() {
    const self = this;
    self.embark.registerConsoleCommand((cmd, _options) => {
      return {
        match: () => cmd === 'plugin',
        process: (cb) => {
          //self.events.request('start-webserver', cb)
        }
      };
    });
  }
}

module.exports = PluginCommand;