Node js Get folder path from a file

use path.dirname

// onlyPath should be G:\node-demos\7-handlebars-watch\demo
var onlyPath = require('path').dirname('G:\\node-demos\\7-node-module\\demo\\config.json');

Simply install path module and use it,

var path = require('path');
path.dirname('G:\\node-demos\\7-node-module\\demo\\config.json')

// Returns: 'G:\node-demos\7-node-module\demo'