Bun
Bun 1.3.14 is an all-in-one JavaScript and TypeScript tool that combines a runtime, package manager, script and test runner, bundler and bunx package executor in one binary.
What Bun provides
Bun combines runtime execution, package installation, scripts, tests, bundling and bunx into a single command-line tool. It can shorten the setup for JavaScript and TypeScript projects, but Node compatibility is a target rather than a promise that every native extension or edge API behaves identically.
Migration and dependency boundaries
Test an existing project on a branch or copied directory while keeping the original Node version, lockfile and CI baseline. Native modules, environment assumptions, test timing and bundler behavior should be checked before production migration.
Execution and licensing
Scripts, dependencies and packages started through bunx run with the current user permissions and should be reviewed like normal executable code. Bun core and bundled JavaScriptCore, WebKit and other components have separate license obligations. Review date: 2026-08-23.
Save to your cloud drive
Open the cloud drive to get the file directly, or save it for convenient access on another device.
Quark Cloud Drive
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Baidu Netdisk
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Bun 1.3.14 installation and compatibility guide
Install the binary for the platform, create an isolated test project, verify dependencies, scripts, tests and builds, and only then compare it with an existing Node.js workflow.
Before you start
- Select the Windows, macOS or Linux build for the CPU architecture and baseline requirements.
- Copy the project or create a branch while preserving the Node version, lockfile and CI settings.
- Remove production secrets from the shell and review third-party install scripts and bunx packages.
Installation steps
- 01
Install and check the binary
Install the matching package, run the version command and confirm the executable path before changing a project toolchain.
- 02
Create a test project
Initialize a small JavaScript or TypeScript project, install one dependency and verify the lockfile and node_modules layout.
- 03
Run scripts, tests and a build
Execute the project scripts and test suite, compare output with Node and inspect the generated bundle before using it in CI.
Quick start
- 01
Check dependency resolution
Install from a clean lockfile, compare transitive versions and record any native module or postinstall differences.
- 02
Compare runtime behavior
Run representative HTTP, filesystem and environment-variable tests, then check error messages and timing.
- 03
Freeze a rollback path
Save the original Node command, lockfile and CI result so the project can return to the previous runtime if a compatibility issue appears.
Usage tips
- bunx packages and install scripts should be reviewed before execution.
- Keep lockfiles and runtime versions pinned for reproducible builds.
- Preserve bundled component license notices when redistributing binaries.
Troubleshooting and uninstall
Why does a Node project fail under Bun?
Check native extensions, unsupported APIs, module resolution, environment assumptions and test timing. Reproduce the smallest failing case and keep the Node path available.
Why did dependency versions change?
Compare lockfiles and registry configuration, then reinstall from a clean directory and review transitive packages before accepting the new graph.
- Restore the original toolchainRevert scripts or CI changes, save the Bun test results and confirm the project still builds with its original runtime.
- Remove the binary and cachesUninstall Bun through the chosen installation method and clear caches only after confirming that project lockfiles and outputs remain intact.
Frequently asked questions
Can Bun replace every Node.js project without changes?
No guarantee applies to native extensions, edge APIs and toolchain assumptions. Run the project's own tests, performance checks and rollback validation first.
Does Bun sandbox third-party scripts by default?
No. Scripts and packages run with the current user's permissions, so review dependencies, install hooks and bunx commands as executable code.
Does the download require an extraction code?
The Quark entry does not require one; the four-character code for the Baidu entry is shown beside its download entry.