by Sai gowtham

Getting the version number from package.json in Node.js

In this tutorial, we are going to learn about two different ways to get the version number from a package.json file in the Node app.

Getting the version number

We can get the version number from the package.json file by requiring it as a module.

Here is an example:

app.js
const package_json = require('./package.json');

console.log(package_json.version); // 1.2.4

The package_json.version property is holding the version number.

Similarly, we can also access the version number by saved it inside the .env file and accessing it using the environment variable.

.env
package_version=1.2.4
app.js
require('dotenv').config();

console.log(process.env.package_version); // 1.2.4

Note: Install the dotenv npm package, if you don’t have in your project.

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