Bun vs Node.js
2026年、最適なツールを選ぶための詳細比較
🏆 クイック判定
引き分け！どちらも素晴らしい選択です。
Bun is the exciting newcomer with impressive speed and an all-in-one approach. Node.js remains the production standard with unmatched maturity, compatibility, and ecosystem support.
📚 Explore More
📊 Visual Comparison
総合スコア比較
カテゴリー別分析
Bun ハイライト
- ✅ Significantly faster than Node.js
- ✅ All-in-one (runtime, bundler, test runner, pkg manager)
- 💰 Free
Node.js ハイライト
- ✅ Most mature and battle-tested runtime
- ✅ Massive ecosystem (2M+ npm packages)
- 💰 Free
機能比較
| Feature | Bun | Node.js |
|---|---|---|
| Engine | JavaScriptCore (Safari) | V8 (Chrome) |
| TypeScript | Native (no config needed) | Via tsx, ts-node, or compilation |
| Package Manager | Built-in (bun install) | npm (bundled separately) |
| Bundler | Built-in (bun build) | None (use webpack, esbuild, etc.) |
| Test Runner | Built-in (bun test) | Built-in (node --test, since v18) |
| Hot Reload | bun --hot | --watch flag (since v18) |
| Node.js Compatibility | ~95% | 100% (it IS Node.js) |
| SQLite | Built-in bun:sqlite | No built-in |
| Web APIs | Fetch, WebSocket, etc. | Growing (fetch in v18+) |
| FFI | Built-in bun:ffi | Via node-ffi or N-API |
Bunとは？
Bun is an all-in-one JavaScript runtime, bundler, test runner, and package manager built from scratch using Zig and JavaScriptCore. It's designed to be a faster drop-in replacement for Node.js.
✅メリット
- •Significantly faster than Node.js
- •All-in-one (runtime, bundler, test runner, pkg manager)
- •Native TypeScript and JSX support
- •Fast package installation
- •Drop-in Node.js compatibility
- •Built-in SQLite support
❌デメリット
- •Not yet 100% Node.js compatible
- •Smaller ecosystem and community
- •Less production battle-testing
- •Some npm packages may not work
- •Linux and macOS focused (Windows support newer)
- •Fewer deployment platform options
Node.jsとは？
Node.js is the original and most widely used JavaScript runtime built on Chrome's V8 engine. It revolutionized server-side JavaScript and powers millions of applications worldwide.
✅メリット
- •Most mature and battle-tested runtime
- •Massive ecosystem (2M+ npm packages)
- •Universal deployment support
- •Extensive documentation
- •Long-term support (LTS) releases
- •Largest community and hiring pool
❌デメリット
- •Slower than Bun for many operations
- •No native TypeScript support
- •Requires separate tools (bundler, test runner)
- •CommonJS/ESM dual module system complexity
- •Callback-based legacy APIs
- •Package manager not included (npm ships separately)
料金比較
📊詳細分析: Bun vs Node.js
BunとNode.jsのどちらを選ぶかは、両ツールが現代のワークフローに魅力的な機能を提供しているため、難しい選択となることがあります。この包括的な比較では、機能や価格から実際のユースケースまで、あらゆる側面を分析し、情報に基づいた意思決定をお手伝いします。
Bun
Bun is an all-in-one JavaScript runtime, bundler, test runner, and package manager built from scratch using Zig and JavaScriptCore. It's designed to be a faster drop-in replacement for Node.js.
Node.js
Node.js is the original and most widely used JavaScript runtime built on Chrome's V8 engine. It revolutionized server-side JavaScript and powers millions of applications worldwide.
🎯最適なユースケース
Bunを選ぶべき時
- ✓チーム向け:
Significantly faster than Node.js
- ✓中小企業向け:
All-in-one (runtime, bundler, test runner, pkg manager)
- ✓エンタープライズ向け:
Native TypeScript and JSX support
Node.jsを選ぶべき時
- ✓個人向け:
Most mature and battle-tested runtime
- ✓中小企業向け:
Massive ecosystem (2M+ npm packages)
- ✓チーム向け:
Universal deployment support
🔍機能の詳細分析
Engine
TypeScript
Package Manager
Bundler
Test Runner
Hot Reload
💰価格分析
Bun
Open source
✅ 無料プランありNode.js
Open source
✅ 無料プランあり💡 Pro Tip
両ツールは無料トライアルまたは無料プランを提供しています。有料プランに加入する前に、実際のワークフローで両方をテストすることをお勧めします。
🏆おすすめ
広範な分析とテストの結果、私たちの見解は次のとおりです：BunとNode.jsはどちらも生産性を大幅に向上させる優れたツールです。最適な選択は、あなたの具体的なニーズ、ワークフロー、優先事項によって異なります。
Choose Bun if:
You want maximum speed, native TypeScript, an all-in-one toolchain, or are starting a new project where compatibility isn't a concern.
Choose Node.js if:
You need maximum compatibility, proven production stability, the widest deployment support, or are working on enterprise applications.
よくある質問
For many projects, yes. Bun aims for Node.js compatibility and handles most packages. However, some edge cases and native modules may not work. Test thoroughly before migrating production apps.
最終結論：どちらを選ぶべき？
✨ Bunを選ぶべき場合
You want maximum speed, native TypeScript, an all-in-one toolchain, or are starting a new project where compatibility isn't a concern.
✨ Node.jsを選ぶべき場合
You need maximum compatibility, proven production stability, the widest deployment support, or are working on enterprise applications.