| 'use strict'; |
| |
| // do not edit .js files directly - edit src/index.jst |
| |
| |
| |
| module.exports = function equal(a, b) { |
| if (a === b) return true; |
| |
| if (a && b && typeof a == 'object' && typeof b == 'object') { |
| if (a.constructor !== b.constructor) return false; |
| |
| var length, i, keys; |
| if (Array.isArray(a)) { |
| length = a.length; |
| if (length != b.length) return false; |
| for (i = length; i-- !== 0;) |
| if (!equal(a[i], b[i])) return false; |
| return true; |
| } |
| |
| |
| |
| if (a.constructor === RegExp) return a.source === b.source && a.flags === b.flags; |
| if (a.valueOf !== Object.prototype.valueOf) return a.valueOf() === b.valueOf(); |
| if (a.toString !== Object.prototype.toString) return a.toString() === b.toString(); |
| |
| keys = Object.keys(a); |
| length = keys.length; |
| if (length !== Object.keys(b).length) return false; |
| |
| for (i = length; i-- !== 0;) |
| if (!Object.prototype.hasOwnProperty.call(b, keys[i])) return false; |
| |
| for (i = length; i-- !== 0;) { |
| var key = keys[i]; |
| |
| if (!equal(a[key], b[key])) return false; |
| } |
| |
| return true; |
| } |
| |
| // true if both NaN, false otherwise |
| return a!==a && b!==b; |
| }; |