Why isn't this child machine receiving an event?

[jackharding]

Here's a sandbox.

I don't understand why the coundownMachine doesn't receive the INCREASE_TIME event.

[Andarist]

You have a bug in your schema. Instead of this:

INCREASE_TIME: assign<Context, any>({ /* ... */ })

you should declare this:

INCREASE_TIME: {
    actions: assign<Context, any>({ /* ... */ })
}

Could you report this as an issue? I believe we could do a better job at surfacing this kind of problems to users.

[jackharding]

I'm a moron. Thanks! Will do.

[danielkcz]

TypeScript kinda did catch the problem, but it's obviously less clear from that message what's wrong.

I would highly recommend you to have a look at https://github.com/mattpocock/xstate-codegen that heavily improves typescript experiences with machines. The first benefit is that you don't to manually sync the StateSchema and a problem like this is shown more clearly.