Bug: 'spawn(machine)' does not validate missing actions like 'useMachine(machine)' does

[kirill578]

Description

it appears that machines that are spawned lack the validation we get with useMachine. Looks like the spawn action is accepting machines that have a non 'never' values under tsConfig.missingImplementations

Expected result

it should throw a typescript error when invoking a non fully implemented machine

Actual result

it does not error

Reproduction

https://codesandbox.io/s/elastic-visvesvaraya-lgbnlj?file=/src/index.ts

Additional context

No response

[kirill578]

I ended up adding this no-op wrapper workaround to my machines to ensure they are fully defined:

import {
  AnyStateMachine,
  AreAllImplementationsAssumedToBeProvided,
} from "xstate";

// workaround for this bug https://github.com/statelyai/xstate/issues/3725
export function confirmAllImplementationsAreProvided<
  TMachine extends AnyStateMachine
>(
  m: AreAllImplementationsAssumedToBeProvided<
    TMachine["__TResolvedTypesMeta"]
  > extends true
    ? TMachine
    : never
): TMachine {
  return m;
}

spawn(AreAllImplementationsAssumedToBeProvided(myMachine))

[Andarist]

Duplicate of #3405