ariya/esprima — comment on commit 7443627e036ab6e018627ebfdf7087bf82f6bdc4
File: esprima.js line 180
By jdalton:

I'm not sure how this is addressing the issue with IE < 8 and `var s = 'x'; s[0]; // 'x'`
Keep in mind if you use string objects in IE8 they won't work will fail this too `Object('x')[0]; // undefined`