What is the most efficient way to automatically convert TypeScript code into JavaScript?

Currently, I am diving into AngularJS2 through a book from 2015 called ng-book2. However, the node package it relies on, tsc, for transpiling TypeScript to JavaScript on the go has been discontinued and deprecated:

npm WARN deprecated [email protected]: TSD is no longer supported, suggesting to use Typings instead (https://github.com/typings/typings) - visit https://github.com/DefinitelyTyped/tsd/issues/269 for further details

. While I have come across other methods in various tutorials, I am curious if there is a general agreement on the most effective way to transpile on a development machine?

Here's the package.json that I'm utilizing:

{
  "name": "ng-book2-reddit",
  "version": "1.0.0",
  "private": true,
  "scripts": {
    "clean": "rm -f ./*.js; rm -f ./*.js.map; rm -f ./intermediates/*.js; rm -f ./intermediates/*.js.map",
    "tsc": "./node_modules/.bin/tsc",
    "tsc:w": "./node_modules/.bin/tsc -w",
    "serve": "./node_modules/.bin/live-server --host=localhost --port=8080 .",
    "go": "concurrent \"npm run tsc:w\" \"npm run serve\" "
  },
  "license": "ISC",
  "dependencies": {
    "@angular/common": "2.0.0-rc.1",
    "@angular/compiler": "2.0.0-rc.1",
    "@angular/core": "2.0.0-rc.1",
    "@angular/http": "2.0.0-rc.1",
    "@angular/platform-browser": "2.0.0-rc.1",
    "@angular/platform-browser-dynamic": "2.0.0-rc.1",
    "@angular/router": "2.0.0-rc.1",
    "core-js": "2.2.2",
    "es6-shim": "^0.35.0",
    "reflect-metadata": "^0.1.3",
    "rxjs": "5.0.0-beta.6",
    "systemjs": "^0.19.6",
    "ts-helpers": "1.1.1",
    "tslint": "3.7.0-dev.2",
    "typescript": "1.9.0-dev.20160409",
    "typings": "^0.8.1",
    "zone.js": "0.6.12"
  },
  "devDependencies": {
    "concurrently": "1.0.0",
    "live-server": "0.9.0",
    "typescript": "1.7.3"
  }
}

Answer №1

Important Update: tsd is no longer in use, it has been replaced by tsc.

To install TypeScript type definitions, switch to using typings instead of tsd.

tsc serves as the TypeScript compiler.

To globally install the typings command line utility, simply run:

npm install typings --global

For detailed instructions on utilizing typings, visit the link provided.

Here's a practical example of installing Mocha TypeScript type definitions:

typings install dt~mocha --global --save

In your packages.json file, include the following script:

    "tsc": "tsc",

Create a tsconfig.json file; refer to this guide for reference.

Execute the following command in your shell:

npm run tsc

Ensure that the typescript package is only listed under devDependencies, not also under dependencies.

Answer №2

For this scenario, employ

npm run tsc:w

Within your package.json

"tsc:w": "./node_modules/.bin/tsc -w",

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