Summary
Covers both watch mode and hot mode for Bun development. Watch mode restarts your process in about 20ms when files change, which is fine for most scripts and tests. Hot mode is the interesting one: it reloads modules in place during Bun.serve without restarting, so you can preserve state like counters or WebSocket connections across changes. The import.meta.hot API gives you lifecycle hooks for cleanup and custom reload logic. Includes patterns for stateful servers using globalThis and a custom file watcher implementation if you need more control. The comparison table and common errors section are genuinely useful for knowing which flag to reach for.
Install to Claude Code
npx -y skills add secondsky/claude-skills --skill bun-hot-reloading --agent claude-codeInstalls into .claude/skills of the current project.
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Files
SKILL.md
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Plug Mailtrap into your AI workflow and let it handle the email.
Connect Mailtrap MCP →Agent, run crypto. Access onchain data & trade routes via 1inch.
Install now →Make coding agent sessions - Searchable, Shareable, Vendor-neutral & Scored.
Try For Free →Your agent targets a perfect 10 Code Health score. Deterministic. Every commit.
Try For Free →Integrate web data into your AI product. One API to scrape website & brand data.
Get API Key Now →belt cli automatically finds the best tools and skills for your agent. image, video, music, tts...
one prompt install →
