3e0a7f808c
Added precondition checks to validate input files and paths to return more informative error messages as per #2
path-type 
Check if a path is a file, directory, or symlink
Install
$ npm install path-type
Usage
const pathType = require('path-type');
pathType.file('package.json').then(isFile => {
console.log(isFile);
//=> true
})
API
.file(path)
.dir(path)
.symlink(path)
Returns a Promise for a boolean of whether the path is the checked type.
.fileSync(path)
.dirSync(path)
.symlinkSync(path)
Returns a boolean of whether the path is the checked type.
License
MIT © Sindre Sorhus