Incredibly fast JavaScript runtime, bundler, test runner, and package manager – all in one
Latest release bun-v1.4.4 — Bun v1.4.4 · 22 Oct 2026
19 files for Claude Code, Codex and OpenCode: dedupe, find-duplicate-prs, find-issues, upgrade-boringssl and 15 more — 4,500 tokens loaded in every session.
AGENTS.md A 4 tok CLAUDE.md B 4,496 tok .claude/settings.json A — .claude/settings.json A — .claude/settings.json A — .claude/skills/implementing-jsc-classes-cpp/SKILL.md A 38 tok .claude/skills/implementing-jsc-classes-rust/SKILL.md A 40 tok .claude/skills/javascriptcore-garbage-collector/SKILL.md A 80 tok .claude/skills/rust-system-calls/SKILL.md A 42 tok .claude/skills/slowest-tests/SKILL.md A 61 tok .claude/skills/verify/SKILL.md A 16 tok .claude/skills/writing-bundler-tests/SKILL.md A 42 tok .claude/skills/writing-dev-server-tests/SKILL.md A 36 tok .claude/commands/dedupe.md A 5 tok .claude/commands/find-duplicate-prs.md A 10 tok .claude/commands/find-issues.md A 9 tok .claude/commands/upgrade-boringssl.md C 24 tok .claude/commands/upgrade-nodejs.md A — .claude/commands/upgrade-webkit.md A 14 tok These files are oven-sh/bun's own configuration — they tell Claude Code, Codex and OpenCode how to work on this repository, so they are not mods to install elsewhere. Copy one as a starting point and replace the parts that are about this project.