checking source code compliance with ECMAScript?

Nazik us

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Nov 9, 2015, 3:38:32 PM11/9/15

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I'm writing a single javascript code for multiple engines - Adobe ExtendedScript (ES3), Adobe ActionScript (ES4), V8, SpiderMonkey, Nitro (mostly ES5.1).

So my question is:
Can I use esprima for checking source code compliance with specific ECMAScript edition?

or does it support ES6 solely? ("Full support for ECMAScript 6")

Thank you

Nazik us

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Nov 9, 2015, 3:40:48 PM11/9/15

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For example, ExtendedScript (ES3) does not have Array.prototype.map() implemented yet. Can I check such compatibility issues?

Michael Ficarra

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Nov 9, 2015, 4:48:41 PM11/9/15

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No, there are many runtime concepts that cannot be checked statically.

Michael Ficarra

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Mike Sherov

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Nov 9, 2015, 4:55:09 PM11/9/15

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You can use the 1.x line of Esprima to detect full ES5 compliance. If it doesn't parse in the 1.x line, but does parse in the 2.7 line, it contains ES6.