Express with TypeScript (and ES Modules — Compilation, Build)

Express with TypeScript (and ES Modules — Compilation, Build)

Express with TypeScript (and ES Modules — Compilation, Build) How to use Express with TypeScript and ES modules with example applications. Express is one of the most popular libraries for Node.js compile backend development purposes. Today, we will go through how to add TypeScript support for the Express framework.

Express is one of the most popular libraries for Node.js backend development purposes. Today, we will go through how to add TypeScript support for the Express framework.

If you are not familiar with Express and want to read a quick tutorial, you can check out my other story to getting started with Express.

Requirements

  • Node.js needs to be installed on your system.

Initialization

Let’s create an empty folder and initialize our package.json file

mkdir ExpressApp && cd ExpressApp

After the initialization of our application folder, we need to initialize npm

npm init -y

Installing Express

yarn add express

Installing TypeScript and required types

yarn add -D typescript ts-node @types/node @types/express

After adding all required packages, now we can initialize our TypeScript configuration file

yarn tsc --init

After successfully initialize your typescript configuration it will create tsconfig.json file for you.

There are some changes that need to be made to be able to use ES modules in Node.js and to build the application

javascript nodejs express typescript

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