gistfile1.js

        //
        // Recursively traverse a hierarchy, returning
        // a list of all relevant .js files.
        //
        function paths(dir) {
            var paths = [];

            try { fs.statSync(dir) }
            catch (e) { return [] }

            (function traverse(dir, stack) {
                stack.push(dir);
                fs.readdirSync(stack.join('/')).forEach(function (file) {
                    var path = stack.concat([file]).join('/'),
                        stat = fs.statSync(path);

                    if (file[0] == '.' || file === 'vendor') {
                        return;
                    } else if (stat.isFile() && /\.js$/.test(file)) {
                        paths.push(path);
                    } else if (stat.isDirectory()) {
                        traverse(file, stack);
                    }
                });
                stack.pop();
            })(dir || '.', []);

            return paths;
        }