'use strict';
  
  var eq     = require('./eq')
    , value  = require('./valid-value')
  
    , keys = Object.keys
    , propertyIsEnumerable = Object.prototype.propertyIsEnumerable;
  
  module.exports = function (a, b) {
  	var k1, k2;
  
  	if (eq(value(a), value(b))) return true;
  
  	a = Object(a);
  	b = Object(b);
  
  	k1 = keys(a);
  	k2 = keys(b);
  	if (k1.length !== k2.length) return false;
  	return k1.every(function (key) {
  		if (!propertyIsEnumerable.call(b, key)) return false;
  		return eq(a[key], b[key]);
  	});
  };