Files
2025-11-28 19:45:44 -07:00

190 lines
6.5 KiB
JavaScript

'use strict';
Object.defineProperty(exports, Symbol.toStringTag, { value: 'Module' });
const isPlainObject = require('./isPlainObject.js');
const getSymbols = require('../compat/_internal/getSymbols.js');
const getTag = require('../compat/_internal/getTag.js');
const tags = require('../compat/_internal/tags.js');
const eq = require('../compat/util/eq.js');
function isEqualWith(a, b, areValuesEqual) {
return isEqualWithImpl(a, b, undefined, undefined, undefined, undefined, areValuesEqual);
}
function isEqualWithImpl(a, b, property, aParent, bParent, stack, areValuesEqual) {
const result = areValuesEqual(a, b, property, aParent, bParent, stack);
if (result !== undefined) {
return result;
}
if (typeof a === typeof b) {
switch (typeof a) {
case 'bigint':
case 'string':
case 'boolean':
case 'symbol':
case 'undefined': {
return a === b;
}
case 'number': {
return a === b || Object.is(a, b);
}
case 'function': {
return a === b;
}
case 'object': {
return areObjectsEqual(a, b, stack, areValuesEqual);
}
}
}
return areObjectsEqual(a, b, stack, areValuesEqual);
}
function areObjectsEqual(a, b, stack, areValuesEqual) {
if (Object.is(a, b)) {
return true;
}
let aTag = getTag.getTag(a);
let bTag = getTag.getTag(b);
if (aTag === tags.argumentsTag) {
aTag = tags.objectTag;
}
if (bTag === tags.argumentsTag) {
bTag = tags.objectTag;
}
if (aTag !== bTag) {
return false;
}
switch (aTag) {
case tags.stringTag:
return a.toString() === b.toString();
case tags.numberTag: {
const x = a.valueOf();
const y = b.valueOf();
return eq.eq(x, y);
}
case tags.booleanTag:
case tags.dateTag:
case tags.symbolTag:
return Object.is(a.valueOf(), b.valueOf());
case tags.regexpTag: {
return a.source === b.source && a.flags === b.flags;
}
case tags.functionTag: {
return a === b;
}
}
stack = stack ?? new Map();
const aStack = stack.get(a);
const bStack = stack.get(b);
if (aStack != null && bStack != null) {
return aStack === b;
}
stack.set(a, b);
stack.set(b, a);
try {
switch (aTag) {
case tags.mapTag: {
if (a.size !== b.size) {
return false;
}
for (const [key, value] of a.entries()) {
if (!b.has(key) || !isEqualWithImpl(value, b.get(key), key, a, b, stack, areValuesEqual)) {
return false;
}
}
return true;
}
case tags.setTag: {
if (a.size !== b.size) {
return false;
}
const aValues = Array.from(a.values());
const bValues = Array.from(b.values());
for (let i = 0; i < aValues.length; i++) {
const aValue = aValues[i];
const index = bValues.findIndex(bValue => {
return isEqualWithImpl(aValue, bValue, undefined, a, b, stack, areValuesEqual);
});
if (index === -1) {
return false;
}
bValues.splice(index, 1);
}
return true;
}
case tags.arrayTag:
case tags.uint8ArrayTag:
case tags.uint8ClampedArrayTag:
case tags.uint16ArrayTag:
case tags.uint32ArrayTag:
case tags.bigUint64ArrayTag:
case tags.int8ArrayTag:
case tags.int16ArrayTag:
case tags.int32ArrayTag:
case tags.bigInt64ArrayTag:
case tags.float32ArrayTag:
case tags.float64ArrayTag: {
if (typeof Buffer !== 'undefined' && Buffer.isBuffer(a) !== Buffer.isBuffer(b)) {
return false;
}
if (a.length !== b.length) {
return false;
}
for (let i = 0; i < a.length; i++) {
if (!isEqualWithImpl(a[i], b[i], i, a, b, stack, areValuesEqual)) {
return false;
}
}
return true;
}
case tags.arrayBufferTag: {
if (a.byteLength !== b.byteLength) {
return false;
}
return areObjectsEqual(new Uint8Array(a), new Uint8Array(b), stack, areValuesEqual);
}
case tags.dataViewTag: {
if (a.byteLength !== b.byteLength || a.byteOffset !== b.byteOffset) {
return false;
}
return areObjectsEqual(new Uint8Array(a), new Uint8Array(b), stack, areValuesEqual);
}
case tags.errorTag: {
return a.name === b.name && a.message === b.message;
}
case tags.objectTag: {
const areEqualInstances = areObjectsEqual(a.constructor, b.constructor, stack, areValuesEqual) ||
(isPlainObject.isPlainObject(a) && isPlainObject.isPlainObject(b));
if (!areEqualInstances) {
return false;
}
const aKeys = [...Object.keys(a), ...getSymbols.getSymbols(a)];
const bKeys = [...Object.keys(b), ...getSymbols.getSymbols(b)];
if (aKeys.length !== bKeys.length) {
return false;
}
for (let i = 0; i < aKeys.length; i++) {
const propKey = aKeys[i];
const aProp = a[propKey];
if (!Object.hasOwn(b, propKey)) {
return false;
}
const bProp = b[propKey];
if (!isEqualWithImpl(aProp, bProp, propKey, a, b, stack, areValuesEqual)) {
return false;
}
}
return true;
}
default: {
return false;
}
}
}
finally {
stack.delete(a);
stack.delete(b);
}
}
exports.isEqualWith = isEqualWith;