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Node.js Bun

easy

Bun is 3-4x faster for HTTP throughput and startup time. Drop-in for most Node.js apps. Native TypeScript, test runner, bundler, and package manager included.

Estimated: 1-3h · 5 steps
Progress0%
Step 1: Install Bun
curl -fsSL https://bun.sh/install | bash
Step 2: Replace node commands

Most scripts: node index.ts → bun index.ts. package.json scripts auto-detected.

bun run start
Step 3: Replace package manager

npm install → bun install (10-25x faster). Reads existing package.json and lockfile.

bun install
Step 4: Test Node.js compatibility

Bun supports most Node.js built-ins. Known gaps: vm module, some crypto functions, native addons (.node files).

Step 5: Use Bun native APIs

Optional: replace node:fs with Bun.file(), replace http with Bun.serve() for max performance.

App starts and serves requests. Tests pass. npm scripts work.