Unlike other npm clients, Bun does not execute arbitrary lifecycle scripts for installed dependencies, such as postinstall and node-gyp builds. These scripts represent a potential security risk, as they can execute arbitrary code on your machine.

NOTE

Bun includes a default allowlist of popular packages containing `postinstall` scripts that are known to be safe. You can see this list [here](https://github.com/oven-sh/bun/blob/main/src/install/default-trusted-dependencies.txt).

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If you are seeing one of the following errors, you are probably trying to use a package that uses postinstall to work properly:

• error: could not determine executable to run for package
• InvalidExe

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To allow Bun to execute lifecycle scripts for a specific package, add the package to trustedDependencies in your package.json file. You can do this automatically by running the command bun pm trust <pkg>.

NOTE

Note that this only allows lifecycle scripts for the specific package listed in `trustedDependencies`, _not_ the dependencies of that dependency!

{
  "name": "my-app",
  "version": "1.0.0",
  "trustedDependencies": ["my-trusted-package"] 
}

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Once this is added, run a fresh install. Bun will re-install your dependencies and properly install

rm -rf node_modules
rm bun.lock
bun install

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See Docs > Package manager > Trusted dependencies for complete documentation of trusted dependencies.