ariya/esprima — pull request #239 by ikarienator (2014-04-02 22:56:07+00:00)
Title: Issue 523: lookahead2() is duplicats token.token

In the following test case:

```(sun) => earth```

Token `"sun"` has been added twice.

This commit gets rid of `lookahead2()`, with an insignificant performance enhancement.