508637 - Get rid of strict warning on trailing commas in object initializers (as per ES5)

Status: RESOLVED FIXED

(Core :: JavaScript Engine, defect)

Description

[David Ascher (:davida)]

given:

foo = {bar: 'baz',
       tom: 'cat',
      }

me:
>>> What's the rationale for complaining
>>> about that?  I find that the trailing comma makes patches cleaner, and is
>>> less error prone (the cost of forgetting a comma is potentially large).

shaver:
>> ECMA's syntax doesn't permit a trailing comma in object initializers
>> (perhaps changed in ES5, I can't recall)

brendan:
> ES5 indeed gets rid of this obnoxious MSFT contribution to ES3. :-)
> Someone please file a bug to get rid of this strict warning.

Comment 2

[Brendan Eich [:brendan]]

Jim, Rob: this is trivial to fix and wanted for ES5 conformance.

/be

Comment 3

[Jim Blandy :jimb]

Attachment: Allow trailing commas in object initializers in strict mode.

Comment 4

[Jim Blandy :jimb]

http://hg.mozilla.org/mozilla-central/rev/12cc5c8c1236