Nodejs server with npm library and Dart

Nodejs server with npm library and Dart

This is just AWESOME!!!

I just been able to make a server using nodejs and dartjs and calling npm library. I decided to share my find with you guys.

To be able to access npm library, you need to be able to access require. Until now, it was block, but by doing this little hack, you can call require and access npm library. The tricks is to put nodejs local variable in a global variable that you can access later.

#main.pre.js
GLOBAL.nodejs = {};
GLOBAL.nodejs.__dirname = __dirname;
GLOBAL.nodejs.__filename = __filename;
GLOBAL.nodejs.exports = exports;
GLOBAL.nodejs.module = module;
GLOBAL.nodejs.require = require;


#main.bat
@echo off
CALL C:\Users\Administrator\AppData\Local\Google\Dart\dart-sdk\bin\dart2js.bat main.dart -o main.js
CALL COPY main.pre.js main.pre.js_
CALL TYPE main.js >> main.pre.js_
CALL DEL main.js
CALL REN main.pre.js_ main.js
CALL node main.js

Change the path to Dart to whatever is yours.

#main.dart
import 'dart:js' as js;

void main() {
  var express = js.context['nodejs'].callMethod('require', ['express.io']);
  var app = express.apply([]);
  
  app.callMethod('listen', [3413]);
}


From there, you can add more library and do whatever you want.

Everytime you want to run your app, you just have to execute main.bat

I used express.io, but it can be anything. It can be the standard http or any other library.