class Bindingtype

type Binding​.BoundPathValue

Type definition for a property value, based on a property path.

type BoundPathValue<
  T,
  P extends string,
> = P extends `${infer K}.${infer Rest}`
  ? K extends keyof T
    ? undefined extends T[K]
      ? BoundPathValue<NonNullable<T[K]>, Rest & string> | undefined
      : BoundPathValue<NonNullable<T[K]>, Rest & string>
    : never
  : P extends keyof NonNullable<T>
    ? undefined extends T
      ? NonNullable<T>[P] | undefined
      : NonNullable<T>[P]
    : never;

Related

• class Binding
  A class that represents a property binding.