[Fix] ES2022+: ToBigInt: properly throw on an unparseable string

.gitattributes

@@ -1096,7 +1096,6 @@
 /2022/TimeFromYear.js	spackled linguist-generated=true
 /2022/TimeString.js	spackled linguist-generated=true
 /2022/TimeWithinDay.js	spackled linguist-generated=true
-/2022/ToBigInt.js	spackled linguist-generated=true
 /2022/ToBigInt64.js	spackled linguist-generated=true
 /2022/ToBigUint64.js	spackled linguist-generated=true
 /2022/ToBoolean.js	spackled linguist-generated=true

2022/ToBigInt.js

@@ -10,9 +10,7 @@ var $SyntaxError = GetIntrinsic('%SyntaxError%');
 var StringToBigInt = require('./StringToBigInt');
 var ToPrimitive = require('./ToPrimitive');
 
-var isNaN = require('../helpers/isNaN');
-
-// https://262.ecma-international.org/11.0/#sec-tobigint
+// https://262.ecma-international.org/13.0/#sec-tobigint
 
 module.exports = function ToBigInt(argument) {
 	if (!$BigInt) {
@@ -35,7 +33,7 @@ module.exports = function ToBigInt(argument) {
 
 	if (typeof prim === 'string') {
 		var n = StringToBigInt(prim);
-		if (isNaN(n)) {
+		if (typeof n === 'undefined') {
 			throw new $TypeError('Failed to parse String to BigInt');
 		}
 		return n;

test/tests.js

@@ -10666,6 +10666,13 @@ var es2020 = function ES2020(ES, ops, expectedMissing, skips) {
 			st.equal(ES.ToBigInt(true), BigInt(1), 'true becomes 1n');
 			st.equal(ES.ToBigInt(false), BigInt(0), 'true becomes 0n');
 
+			st.equal(ES.ToBigInt(''), BigInt(0), 'empty string becomes 0n');
+			st['throws'](
+				function () { ES.ToBigInt('a'); },
+				TypeError,
+				debug('a') + ' can not be parsed to a bigint'
+			);
+
 			forEach(v.bigints, function (bigint) {
 				st.equal(
 					ES.ToBigInt(bigint),