GNU bug report logs - #63810
29.0.91; typescript-ts-mode grammar missing the "is" keyword

Previous Next

Full log

View this message in rfc822 format

From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Jimmy Yuen Ho Wong <wyuenho <at> gmail.com>
Subject: bug#63810: closed (Re: bug#63810: 29.0.91; typescript-ts-mode
 grammar missing the "is" keyword)
Date: Thu, 01 Jun 2023 11:59:02 +0000

[Message part 1 (text/plain, inline)]

Your bug report

#63810: 29.0.91; typescript-ts-mode grammar missing the "is" keyword

which was filed against the emacs package, has been closed.

The explanation is attached below, along with your original report.
If you require more details, please reply to 63810 <at> debbugs.gnu.org.

-- 
63810: https://debbugs.gnu.org/cgi/bugreport.cgi?bug=63810
GNU Bug Tracking System
Contact help-debbugs <at> gnu.org with problems

[Message part 2 (message/rfc822, inline)]

From: Eli Zaretskii <eliz <at> gnu.org>
To: Theodor Thornhill <theo <at> thornhill.no>
Cc: 63810-done <at> debbugs.gnu.org, casouri <at> gmail.com, jostein <at> kjonigsen.net,
 wyuenho <at> gmail.com
Subject: Re: bug#63810: 29.0.91; typescript-ts-mode grammar missing the "is"
 keyword
Date: Thu, 01 Jun 2023 14:58:48 +0300

> From: Theodor Thornhill <theo <at> thornhill.no>
> Cc: 63810 <at> debbugs.gnu.org
> Date: Wed, 31 May 2023 20:51:59 +0200
> 
> Now fixed on emacs-29.

Thanks, closing.

[Message part 3 (message/rfc822, inline)]

From: Jimmy Yuen Ho Wong <wyuenho <at> gmail.com>
To: bug-gnu-emacs <at> gnu.org
Subject: 29.0.91; typescript-ts-mode grammar missing the "is" keyword
Date: Wed, 31 May 2023 08:30:14 +0100

Reproduction:

1. C-x C-f test.ts
2. Insert
   ```typescript
   function isFish(pet: Fish | Bird): pet is Fish {
     return (pet as Fish).swim !== undefined;
   }
   ```
3. Observe the `is` keyword isn't highlighted.

Expectation:

TypeScript has a concept called type predicates, which introduces a
keyword called `is`.


[Reference](https://www.typescriptlang.org/docs/handbook/2/narrowing.html#using-type-predicates)

Previous Next

GNU bug tracking system
Copyright (C) 1999 Darren O. Benham, 1997,2003 nCipher Corporation Ltd, 1994-97 Ian Jackson.