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DeepNormalized<T> ​

ts
type DeepNormalized<T> = T extends null ? null : T extends undefined ? undefined : T extends unknown[] ? DeepNormalizedArray<T> : T extends object ? DeepNormalizedObject<T> : T extends string ? T | null : T;

Defined in: types.ts:184

Recursively normalizes a type by making all properties nullable throughout the type tree. Non-string primitive types, null, and undefined are preserved as-is.

Type Parameters ​

Type ParameterDescription
TType to normalize

Example ​

ts
type Original = {
  name: string;
  age: number;
  address: {
    street: string
  }
};

type Result = DeepNormalized<Original>;
// Result: {
//   name: string | null;
//   age: number;
//   address: {
//     street: string | null
//   }
// }