Bun

Lesson in the Frontend Developer Roadmap · Stage 5: Version Control

Last updated 14 September 2026

What is Bun?

Bun is a JavaScript runtime, bundler, transpiler, and package manager, all-in-one. It's designed to be a faster, more efficient alternative to Node.js and npm, aiming to improve performance and developer experience through its speed and comprehensive toolset. Bun uses JavaScriptCore, Apple's JavaScript engine, which is known for its performance.

Study this in the interactive course See the whole Frontend roadmap

Free resources to learn Bun

Official docsBun Docs
Open sourcebun
ArticleWhat Is Bun? An All-in-One Runtime Taking on Node.js
VideoBun Crash Course | JavaScript Runtime, Bundler & Transpiler

Bun: common questions

Can I learn Bun in Hindi?

This lesson is written in English. Once you sign in, open it in the interactive course and ask the AI tutor to explain Bun in Hindi or Hinglish. The tutor answers from this lesson’s own text, so it stays on the syllabus, and it runs on your own Google, OpenAI or Anthropic key.

Is this Bun tutorial for beginners?

It is lesson 18 of 120 in the free Frontend roadmap, in stage 5, Version Control. If you are new to Frontend, start from stage 1 and come back here in order; if you already know the earlier stages, this lesson stands on its own.