var classof = require('./classof-raw'); var regexpExec = require('./regexp-exec'); // `RegExpExec` abstract operation // https://tc39.es/ecma262/#sec-regexpexec module.exports = function (R, S) { var exec = R.exec; if (typeof exec === 'function') { var result = exec.call(R, S); if (typeof result !== 'object') { throw TypeError('RegExp exec method returned something other than an Object or null'); } return result; } if (classof(R) !== 'RegExp') { throw TypeError('RegExp#exec called on incompatible receiver'); } return regexpExec.call(R, S); };