strong-tie/inbound-calls

1'use strict';2 3// do not edit .js files directly - edit src/index.jst4 5 6  var envHasBigInt64Array = typeof BigInt64Array !== 'undefined';7 8 9module.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 otherwise71  return a!==a && b!==b;72};73