customizing automatic token deletion recovery by exposing canRecoverWithSingleTokenDeletion API

[medihack]

In my parser I want to overwrite the canRecoverWithSingleTokenDeletion method (similar as in SAP/xml-tools). Unfortunately, I am using Typescript and CstParser does not declare this method of the Recoverable mixin in the type definition. So I end up with the error Property 'canRecoverWithSingleTokenDeletion' does not exist on type 'CstParser' when calling it with super.canRecoverWithSingleTokenDeletion(expectedTokenType). Would it be possible to add it to the type definitions? Otherwise, it is quite hard to work around it. The only thing I can think of is to completely re-declare it.

I created a PR with an added extra method canTokenTypeBeDeletedInRecovery to make the API consistent with the already available canTokenTypeBeInsertedInRecovery.

[bd82]

Seems like a reasonable request.

btw, you can often ignore type errors in TypeScript with // @ts-ignore or // @ts-expect-error

[bd82]

I reviewed your #1754 PR