TS ReadOnly Type

Creator

Created

2021 Jul 13 15:13

Editor

Edited

2025 Nov 18 14:16

Refs

Only shallow readonly


type DeepReadonly<T> = {
  readonly [P in keyof T]: T[P] extends object
    ? DeepReadonly<T[P]>
    : T[P];
};


Readonly<type>

utility type readonly to construct a type with all properties set to readonly

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