source: imaps-frontend/node_modules/es-abstract/2020/AbstractEqualityComparison.js@ 79a0317

'use strict';

var StrictEqualityComparison = require('./StrictEqualityComparison');
var StringToBigInt = require('./StringToBigInt');
var ToNumber = require('./ToNumber');
var ToPrimitive = require('./ToPrimitive');
var Type = require('./Type');

var isNaN = require('math-intrinsics/isNaN');
var isObject = require('../helpers/isObject');

// https://262.ecma-international.org/11.0/#sec-abstract-equality-comparison

module.exports = function AbstractEqualityComparison(x, y) {
        if (Type(x) === Type(y)) {
                return StrictEqualityComparison(x, y);
        }
        if (x == null && y == null) {
                return true;
        }
        if (typeof x === 'number' && typeof y === 'string') {
                return AbstractEqualityComparison(x, ToNumber(y));
        }
        if (typeof x === 'string' && typeof y === 'number') {
                return AbstractEqualityComparison(ToNumber(x), y);
        }
        if (typeof x === 'bigint' && typeof y === 'string') {
                var n = StringToBigInt(y);
                if (isNaN(n)) {
                        return false;
                }
                return AbstractEqualityComparison(x, n);
        }
        if (typeof x === 'string' && typeof y === 'bigint') {
                return AbstractEqualityComparison(y, x);
        }
        if (typeof x === 'boolean') {
                return AbstractEqualityComparison(ToNumber(x), y);
        }
        if (typeof y === 'boolean') {
                return AbstractEqualityComparison(x, ToNumber(y));
        }
        if ((typeof x === 'string' || typeof x === 'number' || typeof x === 'bigint' || typeof x === 'symbol') && isObject(y)) {
                return AbstractEqualityComparison(x, ToPrimitive(y));
        }
        if (isObject(x) && (typeof y === 'string' || typeof y === 'number' || typeof y === 'bigint' || typeof y === 'symbol')) {
                return AbstractEqualityComparison(ToPrimitive(x), y);
        }
        if ((typeof x === 'bigint' && typeof y === 'number') || (typeof x === 'number' && typeof y === 'bigint')) {
                if (isNaN(x) || isNaN(y) || x === Infinity || y === Infinity || x === -Infinity || y === -Infinity) {
                        return false;
                }
                return x == y; // eslint-disable-line eqeqeq
        }
        return false;
};