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Maelwalser
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bun-runtime

Configure Bun as a JavaScript runtime, package manager, bundler, and test runner.

Updated Aug 27, 2026
Search Tags:#javascript#runtime#vercel#bun#bundler#package-manager#test-runner
One-click install
npx skills add https://github.com/Maelwalser/claude-config --skill bun-runtime-maelwalser
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: bun-runtime
Source: https://github.com/Maelwalser/claude-config/tree/main/skills/bun-runtime
Command: npx skills add https://github.com/Maelwalser/claude-config --skill bun-runtime-maelwalser

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Helps developers choose, configure, and migrate to Bun as an integrated JavaScript runtime and toolchain to improve install, run, test, and build speed while simplifying deployment workflows.

Core Features & Use Cases

  • When to choose Bun: Best for new JS/TS projects, fast scripting, and environments where install/run performance matters or Bun is supported natively.
  • Migration guidance: Instructions to replace Node/npm commands with Bun equivalents, handle bun.lock or bun.lockb, and adapt npm scripts to bun run or bun x.
  • Deployment and CI: Recommendations for reproducible installs and Vercel configuration, including using bun install --frozen-lockfile for deterministic deploys.

Quick Start

Run bun install to create or update the lockfile, then use bun run <script-name> to start your app and bun test to run tests.

Frequently Asked Questions about bun-runtime

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I migrate my Node.js project to Bun?▼

To migrate to Bun, replace Node and npm commands with Bun equivalents like `bun install` and `bun run`. This handles lockfile management by generating `bun.lock` or `bun.lockb` and adapts existing npm scripts seamlessly.

Does Bun work with Vercel for deploying JavaScript applications?▼

Bun works natively with Vercel deployments. You can ensure reproducible installs by configuring your CI environment to use `bun install --frozen-lockfile` for deterministic dependency resolution during the build process.

What is the best way to run tests using the Bun runtime?▼

The best way to run tests using the Bun runtime is the built-in `bun test` command. This integrated test runner executes your test suites directly, offering fast performance without requiring external testing dependencies.

When should I choose Bun over Node for a new JavaScript project?▼

Choose Bun over Node for new JavaScript or TypeScript projects when install, run, test, and build speeds are critical. It provides an all-in-one toolchain combining a package manager, bundler, and test runner.

How do I execute scripts in a Bun project?▼

You can execute scripts in a Bun project using the `bun run` command followed by your script name, or use `bun x` for one-off executions. This directly replaces standard npm script execution workflows.

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