index.js (1935B)
1 'use strict'; 2 3 // do not edit .js files directly - edit src/index.jst 4 5 6 var envHasBigInt64Array = typeof BigInt64Array !== 'undefined'; 7 8 9 module.exports = function equal(a, b) { 10 if (a === b) return true; 11 12 if (a && b && typeof a == 'object' && typeof b == 'object') { 13 if (a.constructor !== b.constructor) return false; 14 15 var length, i, keys; 16 if (Array.isArray(a)) { 17 length = a.length; 18 if (length != b.length) return false; 19 for (i = length; i-- !== 0;) 20 if (!equal(a[i], b[i])) return false; 21 return true; 22 } 23 24 25 if ((a instanceof Map) && (b instanceof Map)) { 26 if (a.size !== b.size) return false; 27 for (i of a.entries()) 28 if (!b.has(i[0])) return false; 29 for (i of a.entries()) 30 if (!equal(i[1], b.get(i[0]))) return false; 31 return true; 32 } 33 34 if ((a instanceof Set) && (b instanceof Set)) { 35 if (a.size !== b.size) return false; 36 for (i of a.entries()) 37 if (!b.has(i[0])) return false; 38 return true; 39 } 40 41 if (ArrayBuffer.isView(a) && ArrayBuffer.isView(b)) { 42 length = a.length; 43 if (length != b.length) return false; 44 for (i = length; i-- !== 0;) 45 if (a[i] !== b[i]) return false; 46 return true; 47 } 48 49 50 if (a.constructor === RegExp) return a.source === b.source && a.flags === b.flags; 51 if (a.valueOf !== Object.prototype.valueOf) return a.valueOf() === b.valueOf(); 52 if (a.toString !== Object.prototype.toString) return a.toString() === b.toString(); 53 54 keys = Object.keys(a); 55 length = keys.length; 56 if (length !== Object.keys(b).length) return false; 57 58 for (i = length; i-- !== 0;) 59 if (!Object.prototype.hasOwnProperty.call(b, keys[i])) return false; 60 61 for (i = length; i-- !== 0;) { 62 var key = keys[i]; 63 64 if (!equal(a[key], b[key])) return false; 65 } 66 67 return true; 68 } 69 70 // true if both NaN, false otherwise 71 return a!==a && b!==b; 72 };