How do you type actions for events under v5?

[boan-anbo]

Hi there! I'm new to xstate, quick question about keeping Typescript happy:

Suppose I have two events

{
    events: {} as | TypeA | Type B
}

Then for any action I define in the same setup, the passed-in event parameter will be typed as TypeA | TypeB.

Then, the action handlers will complain if you make presumptions about the type of the action, even though you're only linking one action to one event.

Unless you do a matching for help typescript eliminate other possibilities, like this:

So my questions are:

1. Is this what we're supposed to do--writing switches or if statements to help Typescript in actions? or is there a better pattern?

I have no problem with doing matches, just curious if there are better ways.

2. If we're supposed to do this, then is there a more ergonomic way to make early return within actions

By that I mean, if I do not return context.originalFieldValue under else branch, Typescript will complain that I'm not returning a value for the assign functiopn, understandably.

But that means, every action handler will have at least three lines when you have more than one event in your machine. That seems a lot of boilerplate. I was wondering if there is any API to simply allow me "abort and keep the original value" when the event type doesn't match.

[boan-anbo]

Actually, I just realized these are covered here: https://stately.ai/docs/typescript

So if this is no further comments, I'll close this tomorrow.