Fix missing export of TokenStreamRewriter

[weilence]

No description provided.

[ericvergnaud]

Hi,
thanks so much for this!
However it seems to be missing the TS api ?

[weilence]

Yes, the d.ts file exports this API, but in reality, it cannot be used. For example:

import { TokenStreamRewriter } from 'antlr4';

Directly using TokenStreamRewriter results in it being undefined, although the d.ts file appears to be normal.
You must use it like this:

import antlr4 from 'antlr4';
antlr4.TokenStreamRewriter

[ericvergnaud]

So the purpose of this PR is to fix this issue ? Should it be named "Fix missing export of TokenStreamRewriter" ?

[weilence]

Yes

[ericvergnaud]

Thanks!