bun-runtime
Bun as runtime, package manager, bundler, and test runner. When to choose Bun vs Node, migration notes, and Vercel support.
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Excerpt from the author’s documentation
Extracted from a fixed version of SKILL.md in its original language. This is the author’s documentation; installation, compatibility and runtime results have not been verified by this site.
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Topics in the source
- Bun Runtime
- When to Use
- How It Works
- Examples
- Run and install
- Scripts and env
- Testing
- Runtime API
Bun is a fast all-in-one JavaScript runtime and toolkit: runtime, package manager, bundler, and test runner. Prefer Bun for: new JS/TS projects, scripts where install/run speed matters, Vercel deployments with Bun runtime, and when you want a single toolchain (run + install + test + build). Prefer Node for: maximum ecosystem compatibility, legacy tooling that assumes Node, or when a dependency has known Bun issues. Use when: adopting Bun, migrating from Node, writing or debugging Bun scripts/tests, or configuring Bun on Vercel or other platforms. Version baseline: guidance below targets Bun 1.4.x. Check the actual version with bun --version before relying on flag names, since CLI flags can change between releases. Runtime: Drop-in Node-compatible runtime, built on JavaScriptCore. As of Bun 1.4 the runtime itself is implemented in Rust (migrated from Zig). Not 100% Node-compatible — some native addons, less-common node: internal APIs, and packages that depend on Node-specific internals can still fail; verify before depending on it in production. Package manager: Bun includes a package manager; installation performance depends on the project, network conditions, and cache state. Lock
This is an excerpt. Refer to the complete source and its current requirements.
- Source repository
- affaan-m/ECC
- Source file
- pi/core/skills/bun-runtime/SKILL.md
- Fixed revision
- d2ef2680594f9a17526a6e1a2e18b3d242c5d17b
Sources and evidence
This record was collected automatically. Its documentation, suitability and runtime behavior have not been manually verified.
Author: affaan-m/ECC · original repository metadata. Documentation review: Not reviewed. Last source check: 2026-11-09T15:01:42.862Z.
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License and attribution
MIT. Third-party content and copyright remain with their authors. Refer to the original license and terms.
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