'use strict'; 
var flatten = require('arr-flatten'); 
var slice = [] .slice; 
function diff(arr, arrays){ 
var argsLen = _AN_Read_length('length', arguments); 
var len = _AN_Read_length('length', arr), i = -1; 
var res = [] , arrays; 
if (argsLen === 1) { 
return arr; 
} 
if (argsLen > 2) { 
arrays = flatten(slice.call(arguments, 1)); 
} 
while (++i < len){ 
if (!~arrays.indexOf(arr[i])) { 
res.push(arr[i]); 
} 
} 
return res; 
} 
module.exports = diff;