jutsu-bun:bun-bundler

Bun's bundler compiles JS/TS apps into optimized outputs using its build API. Configure entrypoints, output directory, target (bun, browser, or node), format, and minification settings to produce bundles tailored to your runtime environment.

Tree shaking removes unused code during bundling; code splitting separates bundles by entry point for faster load times. Bun's bundler enables both through the splitting option and automatic dead-code elimination, optimizing performance across targets.

Yes, Bun's bundler supports multi-target builds through the target option. Define separate entrypoints and output directories for browser, bun, or node targets, applying target-specific optimizations and external dependency handling to each.

Use Bun's define option to inline environment variables at build time and the external option to exclude dependencies from the bundle. This keeps bundles lean while ensuring runtime access to shared libraries and configuration.

Yes, enable sourcemap generation with the sourcemap option to map minified code back to original sources. This simplifies debugging production bundles while maintaining the performance gains from minification.

Bun's bundler produces formats suited to each target: ESM for modern browsers, CommonJS for Node.js, and bun-compatible output for Bun runtime. Configure format and publicPath settings to control module syntax and asset loading behavior.