1var MATCH = require('./_wks')('match');
2module.exports = function (KEY) {
3  var re = /./;
4  try {
5    '/./'[KEY](re);
6  } catch (e) {
7    try {
8      re[MATCH] = false;
9      return !'/./'[KEY](re);
10    } catch (f) { /* empty */ }
11  } return true;
12};
13