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webshrine / stdtyp/src / ReadonlyDeep

Type Alias: ReadonlyDeep<T> ​

ReadonlyDeep<T>: T extends (...args) => any | Primitive ? T : T extends _DeepReadonlyArray<infer U> ? _DeepReadonlyArray<U> : T extends _DeepReadonlyObject<infer V> ? _DeepReadonlyObject<V> : T

DeepReadonly

Type Parameters ​

• T

Desc ​

Readonly that works for deeply nested structure

Example ​

ts
// Expect: {
  //   readonly first: {
  //     readonly second: {
  //       readonly name: string;
  //     };
  //   };
  // }
  type NestedProps = {
    first: {
      second: {
        name: string;
      };
    };
  };
  type ReadonlyNestedProps = DeepReadonly<NestedProps>;

Defined in ​

node_modules/.pnpm/utility-types@3.11.0/node_modules/utility-types/dist/mapped-types.d.ts:319