Managing Instance Types with species

We covered the implementation of static property kindHint for configuring the instance type in the Managing Instance Types Rules lesson. Let’s move onto the symbols in this lesson.

We may create our own symbol, for example, Symbol.for("KINDHINT"), but there’s already a predefined symbol for this purpose in JavaScript—Symbol.species.

Symbol.species

Symbol.species is used to convey the constructor to be used to create derived objects. Let’s modify the SpecializedName class we implemented in the previous lesson to use species instead of kindHint: