Type alias: Lens<S, F>

Lens<S, F>: Object

A function getter + setter abstraction. Despite deceptively simple API it is quite powerful in kinds of relationships it allows to represent

Type parameters

• S

the parent type

• F

the focus type we want to access from the parent

get: (state) => F

• state: S

F

set: (focus, state) => S

• focus: F

• state: S

S