Wrap Typescript Types

README.MD

Example How To Wrap All Properties In Interface Or Tuple

This example shows how to wrap all properties of an interface or tuple dynamically with a wrapper type. This is possible by declaring a dynamic index with a key variable which maps property keys with the original type and using this key to refer to the wrapped type property.

The second example is more dynamic by providing a type descriptor T which provides the wrapper type which then receives the keys and types of the wrapped type.

typeWrap.ts

// your union type or tuple
type MyTuple = {
  prop1 : string;
  prop2 : number;
}

// your wrapped union type
type WrappedTuple = {
  // [index] = WrapperType < YourType [index] >
  [P in keyof myTuple] = Promise<MyTuple[P]>
}
    
// your dynamically wrapped union type
type WrappedTuple<T> = {
  // [index] = DynamicWrapperType < YourType [index] >
  [P in keyof myTuple] = T<MyTuple[P]>
}