some #537-related fixes

zloirock · May 10, 2019 · b68f408 · b68f408
1 parent 4548330
commit b68f408
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Showing 2 changed files with 3 additions and 7 deletions.
diff --git a/packages/core-js/modules/es.regexp.to-string.js b/packages/core-js/modules/es.regexp.to-string.js
@@ -15,8 +15,9 @@ var INCORRECT_NAME = nativeToString.name != TO_STRING;
 if (NOT_GENERIC || INCORRECT_NAME) {
  require('../internals/redefine')(RegExp.prototype, TO_STRING, function toString() {
  var R = anObject(this);
+ var p = String(R.source);
  var rf = R.flags;
- return '/'.concat(R.source, '/',
-  rf == null && R instanceof RegExp && !('flags' in RegExpPrototype) ? flags.call(R) : rf);
+ var f = String(rf === undefined && R instanceof RegExp && !('flags' in RegExpPrototype) ? flags.call(R) : rf);
+ return '/' + p + '/' + f;
  }, { unsafe: true });
 }
diff --git a/tests/tests/es.regexp.to-string.js b/tests/tests/es.regexp.to-string.js
@@ -22,11 +22,6 @@ QUnit.test('RegExp#toString', assert => {
  flags: 'bar',
  }), '/foo/bar');
  assert.same(toString.call({}), '/undefined/undefined');
- assert.same(toString.call(new Proxy(/pattern/, {
- get(object, key) {
- return key === 'flags' ? 'x' : object[key];
- },
- })), '/pattern/x');
  if (STRICT) {
  assert.throws(() => toString.call(7));
  assert.throws(() => toString.call('a'));