Generic type variables

Wrapper<Opening, ...>

Opening extends string

​A generic type variable constrained by the string, by default of the value captured from the provided opening indicates the opening type of a new Wrapper instance.

Wrapper<..., Closing>

Closing extends string

​A generic type variable constrained by the string, by default of the value captured from the provided closing indicates the closing type of a new Wrapper instance.

wrapper.class.ts

class Wrapper<
  Opening extends string = string,
  Closing extends string = string
> extends Wrap<Opening, Closing> ...