Only the latest JSDoc has worked

[Kingwl]

TypeScript Version: 3.7.x-dev.201xxxxx

Search Terms:
jsdoc,modifierFlags
Code

class A {
	foo () {}
}

class B extends A {
    /** @public */
    /** @deprecated */
	foo() {}
}

declare const b: B
b./*a*/

Expected behavior:

b.foo is marked as deprecated whatever the order of the jsdoc tag

Actual behavior:

Playground Link:

Related Issues:

[Kingwl]

I saw the L2502 getJSDocCommentsAndTags in src\compiler\utilities.ts

// ...
result = append(result, last(node.jsDoc!));
// ...

Is that expected?
If so, why we do that? It's a bit confused.

[yume-chan]

If you dig a little deeper you can see this line was modifed in #32181 to fix #32062.

(However I also worked this out backward, because I remember this rule was changed some time but can't find in release notes)

[MartinJohns]

TypeScript Version: 3.7.x-dev.201xxxxx

Support for @deprecated arrived in TypeScript 4.0. You should update your TypeScript version. :-)

[Kingwl]

@MartinJohns I think i have work on the latest version with git commit

commit 80dc9d9e3c7164a77eb7a02d2264bed210a977cd (HEAD -> master, ms/master)
Author: TypeScript Bot <typescriptbot@microsoft.com>
Date:   Fri Oct 30 06:16:14 2020 +0000

@yume-chan Thanks. It's really confused. (especially if you worked on related feature)

[MartinJohns]

@Kingwl I just jest with you because you mentioned the wrong TypeScript version in your issue description. :-) You skipped that part of the issue template and left the default value.