replace-ext 
Information
| Package | replace-ext |
| Description | Replaces a file extension with another one |
| Node Version | >= 0.4 |
Usage
var replaceExt = require('replace-ext');
var path = '/some/dir/file.js';
var npath = replaceExt(path, '.coffee');
console.log(npath); // /some/dir/file.coffee