don't throw exception when assign a primitive value to @observable.shallow?

[grayflow]

or make @observale shallow by default?

[jamiewinder]

It doesn't make sense to use @observable.shallow with anything that isn't a collection, so throwing if you try to seems sensible?

[urugator]

@jamiewinder you may not know the type of the value during definition ... the @observable.deep also doesn't throw on primitives, even though it also doesn't make sense...

[grayflow]

the requirement is exactly as @jamiewinder pointed out!
for now(before 4.0), is there any simple way to make observable shallow when assigned an "builtin container" value like array or es6 map?

[grayflow]

maybe not to make assumption in api can lead to better api? just provide reasonable defaults and leave room for customization.

[mweststrate]

Closing in favor of the discussion in #1316, which basically makes the same point :)