* Attempt to create an observer instance for a value, * returns the new observer if successfully observed, * or the existing observer if the value a

* Remove an item from an array

* Merge two option objects into a new one. * Core utility used in both instantiation and inheritance.

* Define a property.

* Define a reactive property on an Object.

* Use function string name to check built-in types, * because a simple equality check will fail when running * across different vms / iframes.

* Check if value is primitive

* Check if two values are loosely equal - that is, * if they are plain objects, do they have the same shape?

* Query an element selector if it's not an element already.

* Resolve an asset. * This function is used because child instances need access * to assets defined in its ancestor chain.

* Convert an Array-like object to a real Array.