ES 4: News and Opinion
Brendan posted interesting news and thoughts in his Blog, on the proposed ECMAScript 4 in compare with the earlier edition. He bases his considerations mainly upon a new document on known incompatibilities between ES3 and ES4.
"ES4 should be delayed or abandoned only on technical demerits,
demonstrated specifically. There are enough implementors working
together to make a standard, and ES4 as it has evolved has always been
the expected successor standard," says Brendan.
The proposed ECMAScript 4th edition (ES4) grammar is a bit more than
twice as big as ES3’s, counting several ways: concrete productions,
abstract syntax tree node types, etc. Yet, much of ES4 has been developed and
shipped in ES3-based languages: AS3 in Flash, JS1.6 and 1.7 in Firefox,
Opera’s extensions including array destructuring. The development team is aimed at enhancing syntactic conveniences, which desugar to a smaller core
language.
In his post Brendan tries to clarify the misunderstandings arisen in the blogosphere around ES4. He points to statements and actions, emphasizing that he had not ignored the compatibility issues, since he has been blamed for it.
In the end he suggests that Microsoft could be a big winner by backing ES4 and supporting it in IE.
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