# Run an npm binary with Bun instead of Node

The executable in `node_modules/.bin` is often a shell shim that explicitly
starts Node. Running the shim with Bun does not change that.

For example, a shim may eventually execute:

```shell
exec node "$basedir/../@react-router/dev/bin.js" "$@"
```

Call the target JavaScript file directly instead:

```shell
bun --bun --import=./tests/mocks/index.ts \
  node_modules/@react-router/dev/bin.js dev --host
```

The `--bun` flag tells Bun to run the command. Inspect the `.bin` file to find
its target. This keeps pnpm as the package manager while choosing Bun as the
runtime for the binary.

See the [`cmd-shim` implementation](https://github.com/npm/cmd-shim) for the
kind of wrapper npm creates.