var chokidar = require('chokidar');

var watcher = chokidar.watch('C:\\', {
    persistent: true, ignorePermissionErrors: true
});

var log = console.log.bind(console);

watcher
    .on('add', function(path) { log('File', path, 'has been added'); })
    .on('addDir', function(path) { log('Directory', path, 'has been added'); })
    .on('change', function(path) { log('File', path, 'has been changed'); })
    .on('unlink', function(path) { log('File', path, 'has been removed'); })
    .on('unlinkDir', function(path) { log('Directory', path, 'has been removed'); })
    .on('error', function(error) { log('Error happened', error); })
    .on('ready', function() { log('Initial scan complete. Ready for changes.'); })
    .on('raw', function(event, path, details) { log('Raw event info:', event, path, details); })

watcher.on('change', function(path, stats) {
    if (stats) console.log('File', path, 'changed size to', stats.size);
});

Directory C:\ has been added
Directory C:\ has been removed
Directory C:\$Recycle.Bin has been added
Directory C:\Program Files has been added
Directory C:\ProgramData has been added
Directory C:\Users has been added
Directory C:\Windows has been added
Directory C:\Recovery has been added
Error happened { [Error: watch EINVAL] code: 'EINVAL', errno: 'EINVAL', syscall: 'watch' }
File C:\IO.SYS has been added
Error happened { [Error: watch EINVAL] code: 'EINVAL', errno: 'EINVAL', syscall: 'watch' }
File C:\MSDOS.SYS has been added
Directory C:\Documents and Settings has been added