How to determine generic connection types in TypeScript

Question

we can use:

type stringNumber = string | number;

But what about:

type MapSet<T> = Map<T> | Set<T>;

Is this possible somehow?

PS this is necessary to reduce the length of the interface definitions.

UPDATE:

type MapSet<T> = Map<T> | Set<T>;

this definition is correct in typeScript 1.6, and you can use it today, as Ryan wrote below.

+3

user1338054 03 Aug 15 at 16:22

2 answers

This is an interesting question. The following did the compilation, but having to wrap each value is definitely not optimal.

interface MapSet<T> {
  wrapper: Map<T> | Set<T>;
}

0

Hath995 03 Aug 15 at 17:24

Ryan Cavanaugh · Accepted Answer · 2015-08-03T17:52:53+0000

Typical aliases with typical type parameters are found in TypeScript 1.6.

You can wait for this version to arrive or install the TypeScript nightly build ( npm install typescript@next

)