bug#71992: 30.0.60; major-mode-remap-alist doesn't work for combination js-mode + js-ts-mode

[Dmitry Gutov]

On 09/07/2024 00:37, Jeremy Bryant via Bug reports for GNU Emacs, the 
Swiss army knife of text editors wrote:
> Roman Rudakov<rrudakov@fastmail.com>  writes:
>
> > 1. Evaluate: (setopt major-mode-remap-alist '((js-mode . js-ts-mode)))
> > 2. C-x C-f ~/tmp.js
> >
> > Expected result:
> >
> > major-mode is js-ts-mode
> >
> > Actual result:
> >
> > major-mode is js-mode
> >
> >
> > In GNU Emacs 30.0.60 (build 1, aarch64-apple-darwin23.5.0, NS
> > appkit-2487.60 Version 14.5 (Build 23F79)) of 2024-07-06 built on
> > Romans-MBP.home
> > Windowing system distributor 'Apple', version 10.3.2487
> > System Description:  macOS 14.5
> FWIW, I've been able to reproduce this bug report in 30.0.60 and 29.4

The reason might be that its auto-mode-alist entry references 
javascript-mode (and js-mode is made an alias in autoloads).