var global = require('../internals/global');
+var fails = require('../internals/fails');
+var uncurryThis = require('../internals/function-uncurry-this');
+var toString = require('../internals/to-string');
var trim = require('../internals/string-trim').trim;
var whitespaces = require('../internals/whitespaces');
var $parseInt = global.parseInt;
-var hex = /^[+-]?0[Xx]/;
-var FORCED = $parseInt(whitespaces + '08') !== 8 || $parseInt(whitespaces + '0x16') !== 22;
+var Symbol = global.Symbol;
+var ITERATOR = Symbol && Symbol.iterator;
+var hex = /^[+-]?0x/i;
+var exec = uncurryThis(hex.exec);
+var FORCED = $parseInt(whitespaces + '08') !== 8 || $parseInt(whitespaces + '0x16') !== 22
+ // MS Edge 18- broken with boxed symbols
+ || (ITERATOR && !fails(function () { $parseInt(Object(ITERATOR)); }));
// `parseInt` method
// https://tc39.es/ecma262/#sec-parseint-string-radix
module.exports = FORCED ? function parseInt(string, radix) {
- var S = trim(String(string));
- return $parseInt(S, (radix >>> 0) || (hex.test(S) ? 16 : 10));
+ var S = trim(toString(string));
+ return $parseInt(S, (radix >>> 0) || (exec(hex, S) ? 16 : 10));
} : $parseInt;