Programmatic Bundler API in Bun
From the Bun cheat sheet · Bundler · verified Jul 2026
Programmatic Bundler API
Use Bun.build() in code with plugins and advanced options
typescript
const result = await Bun.build({
entrypoints: ["./src/index.ts"],
outdir: "./dist",
target: "browser",
minify: true,
});
if (!result.success) {
console.error(result.logs);
}💡 Bun.build() returns artifacts with path, size, and hash — useful for build pipelines
⚡ Plugins use the same API as esbuild plugins — most esbuild plugins work in Bun
📌 Use env: "inline" to replace process.env references with actual values at build time
🟢 Check result.success and result.logs to catch build errors programmatically
buildpluginsapi