Esbuild

esbuild is a free and open-source module bundler and minifier for JavaScript and CSS^[2] written by Evan Wallace.^[3][4] Written in Go instead of JavaScript, esbuild claims to be "10 to 100 times" faster than other bundlers by using parallelism and shared memory usage.^[5][6][7][8] It supports TypeScript, JSX, tree-shaking and is extensible through plugins.

esbuild
Developer(s)	Evan Wallace
Stable release	0.25.6[1]  / 7 July 2025; 36 days ago (7 July 2025)
Repository	github.com/evanw/esbuild
Written in	Go
Operating system	Cross-platform
Type	JavaScript bundler
License	MIT License
Website	Official website

Usage

esbuild is used in Vite, a front-end build-tool and development server, and the Phoenix Framework. It is included as a bundler for Angular since v17,^[9] Ruby on Rails since v7,^[10] and for Netlify Functions.^[11]

See also

• Webpack
• Vite