TypeScript Basics

Typescript

Typescript is a super-set of JavaScript which provides type definitions. It is a strongly typed programming language.

Starting a Typescript Project

To start a TypeScript Project, first of all, install TypeScript and ts-node as a dev-dependency

yarn add typescript ts-node -D

Create a tsconfig.json file at the root of your project and add the following configurations (Enough Config to get started).

{
  "compilerOptions": {
    "outDir": "./dist",
    "lib": ["ESNext"],
    "esModuleInterop": true
  }
}

Property	Function
outDir	Where your compiled JavaScript will be stored
lib	Include API's from specified versions.
esModuleInterop	With flag esModuleInterop we can import CommonJS modules in compliance with es6 modules spec.

"scripts": {
  "build": "tsc",
  "dev": "ts-node app.ts"
}