Generic constructor with more than one generic type can break syntax highlighting.

JavaScript and TypeScript Nightly version:

Last released - 4/4/2023, 02:09:37
Last updated - 4/4/2023, 18:09:42

Code

export class Foo {
    readonly bar = {
        map: new Map<
            Type1, Type2>([]) 
    };

    private function() {
        return 1;
    }
}

The code above breaks syntax highlighting, I have also tested in insiders vscode with nightly typescript.

It is fine, if both generics are on the same line as the main type:

If there is only 1 generic, it does slightly better, the highlighting of the generic is wrong, but the rest of the file is ok.

Or if the argument to the constructor is not a list, this it is also recoverable, although both the highlighting of the generic, and the closing angle bracket are wrong.

No source file or test is named. Start by reproducing the multiline TypeScript generic-constructor example in the issue, compare it with the working variants, and trace the TypeScript TextMate grammar responsible for syntax highlighting. Done means the shown code and its surrounding file retain correct highlighting.