paradiego

node_modules/es-abstract/2022/IsLooselyEqual.js

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+'use strict';
+
+var isFinite = require('../helpers/isFinite');
+
+var IsStrictlyEqual = require('./IsStrictlyEqual');
+var StringToBigInt = require('./StringToBigInt');
+var ToNumber = require('./ToNumber');
+var ToPrimitive = require('./ToPrimitive');
+var Type = require('./Type');
+
+// https://262.ecma-international.org/13.0/#sec-islooselyequal
+
+module.exports = function IsLooselyEqual(x, y) {
+	var xType = Type(x);
+	var yType = Type(y);
+	if (xType === yType) {
+		return IsStrictlyEqual(x, y);
+	}
+	if (x == null && y == null) {
+		return true;
+	}
+	if (xType === 'Number' && yType === 'String') {
+		return IsLooselyEqual(x, ToNumber(y));
+	}
+	if (xType === 'String' && yType === 'Number') {
+		return IsLooselyEqual(ToNumber(x), y);
+	}
+	if (xType === 'BigInt' && yType === 'String') {
+		var n = StringToBigInt(y);
+		if (typeof n === 'undefined') {
+			return false;
+		}
+		return IsLooselyEqual(x, n);
+	}
+	if (xType === 'String' && yType === 'BigInt') {
+		return IsLooselyEqual(y, x);
+	}
+	if (xType === 'Boolean') {
+		return IsLooselyEqual(ToNumber(x), y);
+	}
+	if (yType === 'Boolean') {
+		return IsLooselyEqual(x, ToNumber(y));
+	}
+	if ((xType === 'String' || xType === 'Number' || xType === 'Symbol' || xType === 'BigInt') && yType === 'Object') {
+		return IsLooselyEqual(x, ToPrimitive(y));
+	}
+	if (xType === 'Object' && (yType === 'String' || yType === 'Number' || yType === 'Symbol' || yType === 'BigInt')) {
+		return IsLooselyEqual(ToPrimitive(x), y);
+	}
+	if ((xType === 'BigInt' && yType === 'Number') || (xType === 'Number' && yType === 'BigInt')) {
+		if (!isFinite(x) || !isFinite(y)) {
+			return false;
+		}
+		// eslint-disable-next-line eqeqeq
+		return x == y; // shortcut for step 13.b.
+	}
+	return false;
+};