Find the first executable in the path (TS port of 'which')
npm install @vltpkg/whichLike the unix which utility.
Finds the first instance of a specified executable in the PATH
environment variable. Does not cache the results, so hash -r is not
needed when the PATH changes.
Port of the which to a TypeScript hybrid
module.
``js
import { which, whichSync } from '@vltpkg/which'
// async usage
// rejects if not found
const resolved = await which('node')
// if nothrow option is used, returns null if not found
const resolvedOrNull = await which('node', { nothrow: true })
// sync usage
// throws if not found
const resolved = whichSync('node')
// if nothrow option is used, returns null if not found
const resolvedOrNull = whichSync('node', { nothrow: true })
// Pass options to override the PATH and PATHEXT environment vars.
await which('node', { path: someOtherPath, pathExt: somePathExt })
`
You may pass an options object as the second argument.
- path: Use instead of the PATH environment variable.pathExt
- : Use instead of the PATHEXT environment variable.all`: Return all matches, instead of just the first one. Note that
-
this means the function returns an array of strings instead of a
single string.