bug#67488: [PATCH] Fix typescript-ts-mode indentation for switch statements

[Dmitry Gutov <dmitry@gutov.dev>]

On 27/11/2023 19:07, Noah Peart wrote:
> Tags: patch
> 
> * lisp/progmodes/typescript-ts-mode.el(typescript-ts-mode): Add indentation
> rule for switch case and default keywords.
> 
> Bug: `typescript-ts-mode` is missing indentation rules for 'case' and
> 'default' keywords in switch statements.
> 
> Recipe to reproduce:
> Copy the following code into a buffer:
> 
>      const foo = (x: string) => {
>        switch (x) {
>                    case "a":
>                    console.log(x);
>                    return 1;
>      case "b":
>        return 2;
>                    case "c":
>                    default:
>                      return 0;
>        }
>      };
> 
> And call the following function to configure typescript-ts-mode and
> indent the buffer
> 
>      (defun my-ts-indentation ()
>        (interactive)
>        (setq indent-tabs-mode nil)
>        (setq typescript-ts-mode-indent-offset 2)
>        (typescript-ts-mode)
>        (indent-region (point-min) (point-max)))
> 
> The indentation for the 'case' and 'default' branches within the switch
> statement should still be unchanged due to missing indent rules.
> Bug applies to emacs 29 as well.

Thanks! Can repro. The fix looks good as well.