IPC Renderer Service for Electron/Angular2

index.html

<script>
	const electron = require('electron');
	
	// below is just plain angular stuff
	System
		.config({
			packages: {
				angular: {
					format: 'register',
					defaultExtension: 'js'
				}
			}
		})
	;

	System
		.import('./angular/main.js')
		.then(null, console.error.bind(console))
	;
</script>

ipc-renderer.service.ts

import {Injectable} from 'angular2/core';

declare var electron:any;

@Injectable()

export class IpcRendererService {
	
	ipcRenderer = electron.ipcRenderer;
	
	// CONSTRUCTOR ////////////////////////////////////////////////////////////////////////////////////////////////////
	
	constructor() {}
	
	// PRIVATE FUNCTIONS //////////////////////////////////////////////////////////////////////////////////////////////

	// PUBLIC FUNCTIONS ///////////////////////////////////////////////////////////////////////////////////////////////

	on(message:string, callback) {
		return this.ipcRenderer.on(message, callback);
	}

	send(message:string, ...args) {
		this.ipcRenderer.send(message, args);
	}

	sendSync(message:string, ...args) {
		return this.ipcRenderer.sendSync(message, arguments);
	}
	
	// EVENT HANDLER //////////////////////////////////////////////////////////////////////////////////////////////////
	
}

in the sendSync method arguments is passed for ipcRenderer.sendSync() , is that a typo or intentional. Should it be args?