Using TypeScript in a Sails app

Sails supports using TypeScript to write your custom app code (like actions and models). You can enable this support in just a few steps:

1. Run npm install typescript ts-node --save in your app folder.
2. Install the necessary typings for your app. At the very least you'll probably want to:

   npm install @types/node --save
   npm install @types/express --save
   

3. Add the following line at the top of your app's app.js file:

   require('ts-node/register');
   

4. Add a config/extensions.js file to your project with:

   module.exports.moduleloader = {
     sourceExt: ['js', 'ts'],
     configExt: ['js', 'ts']
   };
   

5. Start your app with node app.js instead of sails lift.

Here's an example Typescript controller to get you started, courtesy of @oshatrk: Remember to name it with .ts extension: api/controllers/TsController.ts

// api/controllers/TsController.ts

import util = require('util');
import express = require('express');

declare var sails: any;

export function index(req:any, res:any, next: Function):any {
  console.log('index() from TsController.ts');
  res.status(200).send('Hello from Typescript!');
}

export function config(req: express.Request, res: express.Response, next: Function) {
  console.log('config() from TsController.ts');
  res.status(200)
     .send('<h1>sails.config :</h1><pre>' + util.inspect(sails.config) + '<pre>');
}