developit/microbundle

Health v2 · maintenance only

Adoption not part of the score

8129 stars · 359 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

Microbundle is a zero-configuration JavaScript module bundler for small libraries, built on top of Rollup. It bundles a library into CJS, ESM, and UMD output formats from a single dependency, with built-in TypeScript support, Terser minification, and watch mode.

Use cases

• bundle a small javascript library for npm
• build a library with zero configuration
• generate cjs, esm and umd bundles from one source
• bundle a typescript library without config
• track gzipped bundle size of my npm package
• watch mode rebuilds for library development

When to choose

• you are publishing a small-to-medium JS/TS library to npm and want minimal setup
• you need multiple module output formats (CJS, ESM, UMD) from one command
• you prefer convention-over-configuration with just a package.json

When to avoid

• you are bundling a large application with complex code-splitting needs
• you need heavy custom build pipelines or many plugins
• you want full control over the bundler configuration

Facets

cli-tool · maturity active

build-tool cli developer-tools developer-tools web-development frontend cli cross-platform module-bundler rollup zero-configuration javascript typescript npm umd esm cjs micro-libraries nodejs

Member repositories

For agents

markdown · JSON · MCP: product_card(name="developit/microbundle")