ES6 feature: Update to ES6 identifier grammar #1089
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@mathiasbynens You might be interested in this as well https://bugs.ecmascript.org/show_bug.cgi?id=4097#c4 |
@ikarienator Thanks for the heads up! Is this observable? If so, how? E.g. how should the following code behave: Function('var var;'); // grammar error → throws?
Function('var v\\u0061r;'); // early error → throws (before execution)? |
@mathiasbynens They should both throw. I can't think of any way someone would be able to distinguish an early error from a grammar error. |
Since this is quite a big topic, I'll spawn few new tickets which will tackle the individual issues separately. |
This is now covered by all the most recent commits. |
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Esprima currently implements ES5 identifier grammar. It would be nice to update to ES6.
In case it’s helpful — I just wrote a blog post that documents the differences between ES5 and ES6 identifiers, with examples: https://mathiasbynens.be/notes/javascript-identifiers-es6
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