GNU bug report logs - #68054
[PATCH] Add tree-sitter indent rule for lexical decls in js/typescript

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From: Noah Peart <noah.v.peart <at> gmail.com>
To: Dmitry Gutov <dmitry <at> gutov.dev>
Cc: Yuan Fu <casouri <at> gmail.com>, 68054 <at> debbugs.gnu.org
Subject: bug#68054: [PATCH] Add tree-sitter indent rule for lexical decls in js/typescript
Date: Thu, 2 May 2024 06:38:57 -0700

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> js-ts-mode now has the exact same indentation

I'm not sure what you meant by this - did you mean js-ts-mode has
the same indentation for non-multivar declarations as the examples
shown above? js-ts-mode is still missing indentation rules for multiple
decl statements.
The patch would work for js-ts-mode as well, but I didn't want to copy the
code between the files.

So much of the grammar is shared between js-ts-mode and
typescript-ts-mode, it might be worth combining - neovim uses an ecma
grammar
from which they both inherit.

On Thu, May 2, 2024 at 6:26 AM Noah Peart <noah.v.peart <at> gmail.com> wrote:

> Ok, here is an updated patch for option 3.  The indentation looks like the
> examples
> you've provided - it's the same indentation as in js-mode for these cases.
>
>
> On Thu, Apr 25, 2024 at 6:06 PM Dmitry Gutov <dmitry <at> gutov.dev> wrote:
>
>> On 26/04/2024 01:48, Noah Peart wrote:
>> > Ok, I can make a patch for option 3 (the same as js-mode) instead. It's
>> > implementation is the simplest also.  Would that work?
>>
>> I'd be okay with it, yes, thank you. If only because it's good to have
>> similar defaults in both modes, and evolve them together until one is
>> deprecated.
>>
>> FTR, the option more in line with my previous explanation would be
>> option 3, I think. Rhere's no real need to implement it right now, I
>> guess, but for illustration:
>>
>> const a =
>>          (x: string): string => {
>>            return x + x;
>>          },
>>        bbb =
>>          {
>>            "x": 0
>>          },
>>        cccc =
>>          1,
>>        ddddd = 0;
>>
>> const bbb =
>>        {
>>          "x": 0
>>        }, a = (x: string): string => {
>>          return x + x;
>>        },
>>        bbb = {
>>          "x": 0
>>        },
>>        cccc = 1,
>>        ddddd = 0;
>>
>> js-mode also has by necessity the below exceptions: when the first
>> variable's value starts on the same line, and it's multiline (usually
>> that means that the same line ends with a {), then its indentation level
>> goes back to the statement, not to the "const" keyword:
>>
>> const a = (x: string): string => {
>>    return x + x;
>> }
>>
>> var bbb = {
>>    "x": 0
>> }
>>
>> This is basically to support the non-multivar declarations better.
>> js-ts-mode now has the exact same indentation; these cases might come up
>> when you change how the first two cases indent, however.
>>
>

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