NODEJS TYPESCRIPT INSTALL
NODEJS TYPESCRIPT CODE

This is useful especially when you want to avoid compiling files containing unit or integration tests. This file is used to determine what all TypeScript files will be compiled in a project. We could also set up a tsconfig.json file. Try opening your browser You should see a Hello World! message. Now that we have our JavaScript file, we can use node to run our code.

NODEJS TYPESCRIPT CODE

What we need to do is to compile our TypeScript code into JavaScript code, and we are going to do that using the tsc command which it is available after installing typescript dependency in the project. If we try to do something similar with index.ts file, the terminal will fail due to syntax errors as we are writing code in TypeScript. Normally, you will run a js file using the nodecommand. If we were working with plain JavaScript, a similar code could be written in a js file such as index.js. Previously, you created a simple server inside the index.ts. Running TypeScript Files in Node.js: Understanding the Processįirst, it is important for you to understand the process that happens to run TypeScript files in node.js. npm i -save-dev typescript far, this is how your package.json should look like: ) Īs you notice, it will be a simple GET API endpoint returning a message.

NODEJS TYPESCRIPT INSTALL

We need to install TypeScript as well as Express types to take advantage of TypeScript, but in this case, we will install them as part of the dev dependencies.

Since we are going to work with Express.js, we need to install Express. For now, the only information we cared to provide is the package name and the entry point set to index.ts. Once this script is run, it will ask you the following questions: package name: (src) express-typescriptįeel free to provide the correct details. Time to set up our package.json file where we can define all our dependencies as well as executable scripts. Running TypeScript Files in Node.js: Quick Processįirst things first, we need to create the directory for our application: mkdir express-typescript.Running TypeScript Files in Node.js: Understanding the Process.Create Minimal Server with Express.js and TypeScript.

Nodejs typescript