fix-regexp-well-known-symbol-logic.js
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	'use strict';
	// TODO: Remove from `core-js@4` since it's moved to entry points
	require('../modules/es.regexp.exec');
	var uncurryThis = require('../internals/function-uncurry-this');
	var defineBuiltIn = require('../internals/define-built-in');
	var regexpExec = require('../internals/regexp-exec');
	var fails = require('../internals/fails');
	var wellKnownSymbol = require('../internals/well-known-symbol');
	var createNonEnumerableProperty = require('../internals/create-non-enumerable-property');

	var SPECIES = wellKnownSymbol('species');
	var RegExpPrototype = RegExp.prototype;

	module.exports = function (KEY, exec, FORCED, SHAM) {
	var SYMBOL = wellKnownSymbol(KEY);

	var DELEGATES_TO_SYMBOL = !fails(function () {
	// String methods call symbol-named RegEp methods
	var O = {};
	O[SYMBOL] = function () { return 7; };
	return ''[KEY](O) != 7;
	});

	var DELEGATES_TO_EXEC = DELEGATES_TO_SYMBOL && !fails(function () {
	// Symbol-named RegExp methods call .exec
	var execCalled = false;
	var re = /a/;

	if (KEY === 'split') {
	// We can't use real regex here since it causes deoptimization
	// and serious performance degradation in V8
	// https://github.com/zloirock/core-js/issues/306
	re = {};
	// RegExp[@@split] doesn't call the regex's exec method, but first creates
	// a new one. We need to return the patched regex when creating the new one.
	re.constructor = {};
	re.constructor[SPECIES] = function () { return re; };
	re.flags = '';
	re[SYMBOL] = /./[SYMBOL];
	}

	re.exec = function () { execCalled = true; return null; };

	re[SYMBOL]('');
	return !execCalled;
	});

	if (
	!DELEGATES_TO_SYMBOL \|\|
	!DELEGATES_TO_EXEC \|\|
	FORCED
	) {
	var uncurriedNativeRegExpMethod = uncurryThis(/./[SYMBOL]);
	var methods = exec(SYMBOL, ''[KEY], function (nativeMethod, regexp, str, arg2, forceStringMethod) {
	var uncurriedNativeMethod = uncurryThis(nativeMethod);
	var $exec = regexp.exec;
	if ($exec === regexpExec \|\| $exec === RegExpPrototype.exec) {
	if (DELEGATES_TO_SYMBOL && !forceStringMethod) {
	// The native String method already delegates to @@method (this
	// polyfilled function), leasing to infinite recursion.
	// We avoid it by directly calling the native @@method method.
	return { done: true, value: uncurriedNativeRegExpMethod(regexp, str, arg2) };
	}
	return { done: true, value: uncurriedNativeMethod(str, regexp, arg2) };
	}
	return { done: false };
	});

	defineBuiltIn(String.prototype, KEY, methods[0]);
	defineBuiltIn(RegExpPrototype, SYMBOL, methods[1]);
	}

	if (SHAM) createNonEnumerableProperty(RegExpPrototype[SYMBOL], 'sham', true);
	};

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