Basic Template for TypeScript App

Get starting files here:

mkdir <appName>

cd <appName>

Generate package.json

npm init -y

Generate tsconfig.json

tsc --init

Install Nodemon

npm install -g nodemon

Install Concurrently

npm install -g concurrently

Add src and build folders

mkdir src build

Launch app in vscode

code .

Configure tsconfig.json

"compilerOptions": {
  // ...
  "rootDir": "./src", 
  "outDir": "./build", 
  // ...
}

Setup scripts in package.json to build, run and run commands concurrently.

  // ...
  "scripts": {
    "start:build": "tsc -w",
    "start:run": "nodemon build/index.js",
    "start": "concurrently npm:start:*"
    // ...
  },

Test and run in Terminal

npm start

May get an error on the first run. This is because the TypeScript Compiler has not yet generated the index.js file. If this occurs, stop nodemon (control + C) and run app again (npm start).

Node JS

• Will need to add type definition files

npm install @types/node