Assembly Line

Esbuild

An extremely fast bundler for the web

Esbuild is an open-source javascript build tools project on GitHub under the MIT license (permissive), with 40k stars. It is built with Go and V8. Its last push was 3 months ago.

Stars
40k
License
MIT
Activity
Active
Latest release
v0.28.2

Code on GitHub Website

Judgement

What it is
Developer tool
What it does
A JavaScript, TypeScript, JSX and CSS bundler and minifier written in Go, used from the CLI, JavaScript or Go.
Adopt it when
You need a fast, low-config bundler or transpiler step, for a library, a script or inside another tool.
Watch out
It does not type-check TypeScript, its plugin API is narrower than webpack's or Rollup's, and it is mostly maintained by one person.
Ready for
Production-ready
Runs as
Command line and library
Built with
Go and JavaScript
How established
Established: started 10 years ago, latest release v0.28.2.
What the license allows
You can build it into a product you sell, as long as you keep its copyright notice.

Judged on 2026-11-06 from the project's README and GitHub data. The license and age lines are worked out directly.

Built from

GoV8

Follow it down: Esbuild → Go → runs on a microchip

How compilers were built, back to punched paper tape

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Stars, license and activity come from GitHub and refresh on a rolling hourly schedule. The project's own description is quoted as written.