Inbuilt Libraries

Bruno supports CommonJS syntax require for importing libraries. ES Modules import/export are not supported at this time.

Here’s an example demonstrating how to use the chai library in Bruno:

const chai = require('chai');
 
const { expect } = chai;
 
function add(a, b) {
  return a + b;
}
 
const result = add(2, 3);
 
expect(result).to.equal(5);
 
console.log('Test passed!');

You can include this code in the pre-request script section of Bruno to test it out.

Below is the list of inbuilt libraries supported by Bruno.

• axios (opens in a new tab) - Promise based HTTP client for the browser and node.js
• atob (opens in a new tab) - Turn base64-encoded ascii data back to binary.
• btoa (opens in a new tab) - Turn binary data to base64-encoded ascii.
• chai (opens in a new tab) - BDD/TDD assertion library for node.js and the browser.
• moment (opens in a new tab) - Parse, validate, manipulate, and display dates and times in JavaScript.
• uuid (opens in a new tab) - For the creation of RFC4122 UUIDs.
• nanoid (opens in a new tab) - A tiny, secure, URL-friendly, unique string ID generator for JavaScript.
• crypto-js (opens in a new tab) - JavaScript library of crypto standards.

• node-fetch (opens in a new tab) - A light-weight module that brings Fetch API to Node.js.
• lodash (opens in a new tab) - A modern JavaScript utility library delivering modularity, performance & extras.
• ajv (opens in a new tab) - Ajv JSON schema validator.