Type Script
TypeScript is a superset of JavaScript that compiles to clean JavaScript output.
6to5
Turn ES6 code into readable vanilla ES5 with source maps
Cypress
Fast, easy and reliable testing for anything that runs in a browser.
Yarn
Fast, reliable, and secure dependency management.
Mocha
A simple, flexible, fun javascript test framework for node.js & the browser. (BDD, TDD, QUnit styles via interfaces)
Faker.js
generate massive amounts of fake data in Node.js and the browser
Gulp
The streaming build system
Jasmine
DOM-less simple JavaScript testing framework
Bluebird
Bluebird is a full featured promise library with unmatched performance.
Platform
Reactive libraries for Angular
Nightwatch
UI automated testing framework based on node.js and selenium webdriver
Protractor
E2E test framework for Angular apps
Bower
A package manager for the web, created at Twitter
Sinon.js
Test spies, stubs and mocks for JavaScript.
JSHint
JSHint is a community-driven tool to detect errors in JavaScript code and enforce your team's coding conventions.
Nock
HTTP mocking and expectations library
Testcafe
A Node.js tool to automate end-to-end web testing.