Why isn't observable.array clear method an action

[TruePath]

I was surprised to get the error that I was changing an observable outside of an action when calling .clear() on an observable array. Is there a reason that all the methods which affect an observable array aren't already wrapped in an action?

[urugator]

For the same reason, why assigments (eg o.foo = 5) aren't wrapped in action:

// Consider you forget to apply action here,
// this wouldn't warn:
doSomething() {
  this.array.splice();
  this.array.clear();
  this.map.set("", "");
}

It's not about whether it's an assigment or method call, any of these could represent individual and complete operation. It's kinda arbitrary decision to not consider these as "self-sufficent", but it allows us to detect missing batch in majority/lots/many/(you tell me) cases. It's not ideal though, following should ideally warn as well, but it won't:

doSomething() {
  this.action1();
  this.action2();
}

Note the internal logic of these methods is always batched, no matter whether it's called from within an action or not.