Type Alias SetNullishPropertiesAsOptional<T>

SetNullishPropertiesAsOptional: (
    {
        -readonly [Key in keyof T as IsNullish<T[Key]> extends true
            ? never
            : Key]: T[Key]
    } & {
        -readonly [Key in keyof T as IsNullish<T[Key]> extends true
            ? Key
            : never]?: T[Key]
    }
) extends infer Merged
    ? { [Key in keyof Merged]: Merged[Key] }
    : never

Converts any properties whose type includes undefined or null into optional properties typed as T[K] | undefined. Properties whose type does not include undefined or null are left unchanged.

Type Parameters

T extends AnyObject

Example

// {name: string; age?: number | undefined; label?: string | null};
type Result = SetNullishPropertiesAsOptional<{
    name: string;
    age: number | undefined;
    label: string | null;
}>;

Package

@rest-vir/api

Type Alias SetNullishPropertiesAsOptional<T>

Type Parameters

Example

Package

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