Is there a way to not throw an exception for enumerations?

[Lao-Ax]

Is there a way to not throw an exception for enumerations when types is not a part of enum?

Example:

t.model('TaskStore', {
    id: t.identifier,
    mode: t.enumeration(['AAA', 'BBB']),
}
...

const doStuff(task: TaskStoreInstance) {
  const { mode } = task
  if (mode === 'AAA' || mode === 'BBBB') {
     // do something
  } else { 
     // do nothing
  }
}

Imagine that I got a Task by server. And eventually it returns {mode: 'CCC'}. MST throws an exception No type is applicable for the union.
I do not want runtime errors in that place. I'm OK that the task has a new mode, I will code it soon. But now I want my users be able to do stuff with tasks as before. :)
AND I want to save in place IDE suggestions about types, until I added a new one.

Is there any way to disable that strict type checking for enums by config? Or other ways?

[coolsoftwaretyler]

Hey @Lao-Ax - unfortunately I don't think we have a way to configure this at runtime. It's just how enums work in MST.

I think you should get the TS completions you want if you make a custom type here, like this:

const TaskMode = t.union(
  t.enumeration(['AAA', 'BBB']),
  t.string
)

const TaskStore = t.model('TaskStore', {
  id: t.identifier,
  mode: TaskMode,
})

[Lao-Ax]

Thank you for so quick response.
Looks like in that case I will lose type checking during development. I mean now the mode is any string, don't you think so?

But I'll try your suggestion.

Thank you for ideas.