# which-promise [](https://www.npmjs.com/package/which-promise) [](https://travis-ci.org/shinnn/which-promise) [](https://ci.appveyor.com/project/ShinnosukeWatanabe/which-promise) [](https://coveralls.io/r/shinnn/which-promise) [](https://david-dm.org/shinnn/which-promise) [](https://david-dm.org/shinnn/which-promise#info=devDependencies) [Promisified](https://promise-nuggets.github.io/articles/07-wrapping-callback-functions.html) version of [node-which](https://github.com/npm/node-which): > Finds the first instance of a specified executable in the PATH environment variable. ```javascript const whichPromise = require('which-promise'); whichPromise('ls').then(resolvedPath => { resolvedPath; //=> '/bin/ls' }); whichPromise('ls', {path: './'}).catch(err => { err.message; //=> 'not found: ls' }); ``` ## Installation [Use npm.](https://docs.npmjs.com/cli/install) ``` npm install which-promise ``` ## API ```javascript const whichPromise = require('which-promise'); ``` ### whichPromise(*cmd* [, *options*]) *cmd*: `String` (directly passed to node-which's first argument) *options*: `Object` (used as node-which [options](https://github.com/npm/node-which/blob/5d832a3d32b21a7f110771a3c14d5e8ee90d6706/which.js#L40)) Return: `Object` ([Promise](https://promisesaplus.com/)) ## License [The Unlicense](./LICENSE)