Bun Runtime Bun is a fast all-in-one JavaScript runtime built on JavaScriptCore (Safari's engine). It provides 4x faster startup than Node.js on Linux. Quick Start Core CLI Flags | Flag | Purpose | |------|---------| | | Restart on file changes | | | Hot module replacement (preserves state) | | | Reduce memory usage (slower GC) | | | Enable debugger | | | Load modules before execution | | | Load specific .env file | | | Evaluate code string | Running Files Bun transpiles TypeScript and JSX on-the-fly: Important : Put Bun flags immediately after : Package.json Scripts Bun respects lifecycle ho…