Here you can find the source of inspect()
Array.prototype.inspect = function() { return '[' + this.map(Object.inspect).join(', ') + ']'; };
var util = require("util"); Array.prototype.inspect = function(depth) { var str = '[', i; for(i=0; i<this.length && str.length < 240; i++) { str += util.inspect(this[i], {colors: true,depth: depth-1}) + (i<this.length-1? ', ': ''); return str + (this.length>i? '+' + (this.length-i): '') + ']'; };