type PickByValueType<T, ValueType> = {
    [K in keyof T as T[K] extends ValueType ? K : never]: T[K];
};

interface UserProfile {
    id: string;
    name: string;
    age: number;
    isActive: boolean;
    lastLogin: Date;
    tags: string[];
    settings: { theme: string; notifications: boolean };
    getDisplayName(): string;
}

// Example Usage:
type StringProperties = PickByValueType<UserProfile, string>;
// Expected: { id: string; name: string; }

const stringProps: StringProperties = {
    id: "user-456",
    name: "Alice",
};

type BooleanProperties = PickByValueType<UserProfile, boolean>;
// Expected: { isActive: boolean; }

const booleanProps: BooleanProperties = {
    isActive: true,
};

type NumberProperties = PickByValueType<UserProfile, number>;
// Expected: { age: number; }

type ArrayProperties = PickByValueType<UserProfile, string[]>;
// Expected: { tags: string[]; }

type ObjectProperties = PickByValueType<UserProfile, object>;
// Expected: { lastLogin: Date; tags: string[]; settings: { theme: string; notifications: boolean }; }
// Note: Date and arrays are technically objects in JavaScript.