Typescript keyof for properties or functions

keyOfTypes.ts

interface IAddress{
    street: string | string[];
    town: string;
    postcode: string;
}

interface IPerson {
    id: number;  
    name: string;
    isFemale: boolean;
    dob: Date;
    address: IAddress;
    notes?: string;
    nickName?: string;
    call?: () => void;
    rename: (name: string) => void;
    calculateAge: () => number;
}

type FunctionKeys<T> = { [K in keyof T]: Required<T>[K] extends (...a: any[]) => any ? K : never }[keyof T]
type FunctionProperties<T> = Pick<T, FunctionKeys<T>>;

function handleFunction<T>(type: T, functionName: keyof FunctionProperties<T>) {
    const value = type[functionName];
}

type PropertyKeys<T> = { [K in keyof T]: Required<T>[K] extends (...a: any[]) => any ? never : K }[keyof T]
type PropertyProperties<T> = Pick<T, PropertyKeys<T>>;

function handleProperty<T>(type: T, functionName: keyof PropertyProperties<T>) {
    const value = type[functionName];
}

const person: IPerson = {} as any;

handleFunction(person, "calculateAge"); // accepts "call", "rename", "calculateAge"
handleProperty(person, "isFemale"); // accepts "address", "dob", "id", "isFemale", "dob", "address", "notes"