DeepReadonly Object Typescript

Question

It is possible to create a DeepReadonly type like this:

type DeepReadonly = {
  readonly [P in keyof T]: DeepReadonly;
};

         


        

Answer 1

You can use ts-toolbelt, it can do operations on types at any depth

In your case, it would be:

import {O} from 'ts-toolbelt'

interface A {
  B: { C: number; };
  D: { E: number; }[];
}

type optional = O.Readonly

And if you want to compute it deeply (for display purposes), you can use Compute for that