untildify 
Convert a tilde path to an absolute path:
~/dev=>/Users/sindresorhus/dev
Install
$ npm install --save untildify
Usage
var untildify = require('untildify');
untildify('~/dev');
//=> '/Users/sindresorhus/dev'
Related
See tildify for the inverse.
License
MIT © Sindre Sorhus