core-js/internals/correct-is-regexp-logic.js

var wellKnownSymbol = require('../internals/well-known-symbol');

var MATCH = wellKnownSymbol('match');

module.exports = function (METHOD_NAME) {
  var regexp = /./;
  try {
    '/./'[METHOD_NAME](regexp);
  } catch (e) {
    try {
      regexp[MATCH] = false;
      return '/./'[METHOD_NAME](regexp);
    } catch (f) { /* empty */ }
  } return false;
};