extension.js 218 Bytes Raw Blame History Permalink 1 2 3 4 5 6 7 8 9 10 11 const path = require('path'); const EXTRE = /^[.]?[^.]+([.].*)$/; module.exports = function (input) { var extension = EXTRE.exec(path.basename(input)); if (!extension) { return; } return extension[1]; };