New emacs js mode

[Thom Blake]

Hi folks,

I've put together a new emacs mode for js based on js-mode (formerly
espresso) and js2-mode, the main purpose of which was to support
comma-first style. Check it out at https://github.com/thomblake/js-mode

Mostly indents the way espresso does, except:

* supports comma-first style (or comma-last style)
* supports operator-first style (or operator-last style)
* properly indents comma-last continued var statements
* has all the syntax highlighting, error detection, etc of js2-mode

I know it is compatible with emacs 23.2, but welcome feedback on
compatibility/incompatibility with your version of emacs.

Feel free to file issue reports on github for things like "it indented
like [code block] but I want it to be [code block]".

-Thom Blake

[zan]

wonderful! thanks!

[Mariusz Nowak]

Thom, Thanks!
I'll definitely check it out.
What's the status for JSON support, do this mode show json files
without errors ?

- Mariusz Nowak

On Jun 3, 7:06 pm, Thom Blake <webmas...@thomblake.com> wrote:
> Hi folks,
>
> I've put together a new emacs mode for js based on js-mode (formerly
> espresso) and js2-mode, the main purpose of which was to support

> comma-first style.  Check it out athttps://github.com/thomblake/js-mode

[thomblake]

Just wanted to note that my emacs js-mode has been made much less
stupid and is now called js3-mode. It is here:

https://github.com/thomblake/js3-mode

-Thom

[thomblake]

Mariusz,

I actually have no idea what you're looking for here. JSON is very
nearly a subset of JS, so it should *appear* the same as JS if you
open it. This mode is designed however for JS files and isn't
necessarily intended to work for anything else.

[Mariusz Nowak]

@thomblake

Following code as stand alone is not right JavaScript code, while it's
proper JSON code:

{ "foo": "bar" }

js2-mode will mark it red as it won't work as JavaScript, a while a go
I prepared a fix for js2-mode to allow syntax highlighting of JSON
files without errors: http://code.google.com/p/js2-mode/issues/detail?id=50#c7

It's good to have proper syntax highlighting when we open package.json
files as well. My question was do your mode supports that ?

[Jorge]

On 20/06/2011, at 11:54, Mariusz Nowak wrote:

> Following code as stand alone is not right JavaScript code, while it's
> proper JSON code:
>
> { "foo": "bar" }
>
> js2-mode will mark it red as it won't work as JavaScript,

Huh ?
--
Jorge.

[thomblake]

@Mariusz

Ah, I see. A JSON file is usually not a valid JS program, and if it
is then it is by accident. The right answer isn't for your JS mode to
handle .json files as a special case; instead, you should get a JSON
mode like json.el and set it up to handle .json files, since JSON is
really a different animal and is not actually a subset of JS.

That said, I'll add it as an issue in case an obvious path presents
itself.

[thomblake]

Actually, it seems I was misinformed about the existence of a json-
mode for emacs. Will look into it.

[thomblake]

@Mariusz

For the moment, I'm recommending json-mode https://github.com/joshwnj/json-mode

It is based on js-mode and provides syntax highlighting for json
files. Based on some quick testing, it seems to work well.

[Mariusz Nowak]

Yes, you got it. Good js-mode should imply some support for JSON files as well, and that was my concern.

I haven't looked yet at your js3-mode, but I'll do shortly.

Thanks!

[Josh Johnston]

Hi @Thom, thanks for the plug, and I'm glad you've found json-mode
useful so far. It's my first attempt at scripting emacs so I'd
appreciate any feedback you can give.

Something I also find really useful for editing JSON files is running
them through a beautifier to make them more readable. Especially
handy if you want to edit JSON which has been whitespace-compacted.

I'm doing this in a pretty ad-hoc way, using a command-line script to
format the JSON and piping it via `C-u M-| command RET`. Any
recommendations on how to bundle this functionality more closely with
the plugin?

On Jun 21, 12:58 am, thomblake <webmas...@thomblake.com> wrote:
> @Mariusz
>

> For the moment, I'm recommending json-modehttps://github.com/joshwnj/json-mode