Applying Clean Code Principles: The Law of Demeter in TypeScript

class Car {
    public start() {
        this.checkFuel();
        this.ignite();
    }
    
    private checkFuel() {
        console.log("Checking fuel level...");
    }
    
    private ignite() {
        console.log("Igniting the engine...");
    }
}

class Library {
    public borrowBook(title: string): Book {
        const book = new Book(title);
        book.issue();
        return book;
    }
}

class Book {
    private title: string;
    
    constructor(title: string) {
        this.title = title;
    }
    
    public issue() {
        console.log("Book issued: " + this.title);
    }
}

class Printer {
    public print(document: Document) {
        document.sendToPrinter();
    }
}

class Document {
    public sendToPrinter() {
        console.log("Document is being printed...");
    }
}

class House {
    private door = new Door();
    
    public lockHouse() {
        this.door.close();
    }
}

class Door {
    public close() {
        console.log("Door is closed.");
    }
}

class TemperatureConverter {
    private static readonly conversionFactor = 9.0 / 5.0;
    
    public celsiusToFahrenheit(celsius: number): number {
        return Math.round(celsius * TemperatureConverter.conversionFactor + 32);
    }
}

class Person {
    private address: Address;
    
    constructor(address: Address) {
        this.address = address;
    }
    
    public getAddressDetails(): string {
        return "Address: " + this.address.getFirstName() + " " + this.address.getLastName() +
               ", " + this.address.getStreet() + 
               ", " + this.address.getCity() + 
               ", " + this.address.getCountry() + 
               ", ZipCode: " + this.address.getZipCode();
    }
}

class Address {
    private firstName: string;
    private lastName: string;
    private street: string;
    private city: string;
    private country: string;
    private zipCode: string;
    
    constructor(firstName: string, lastName: string, street: string, city: string, country: string, zipCode: string) {
        this.firstName = firstName;
        this.lastName = lastName;
        this.street = street;
        this.city = city;
        this.country = country;
        this.zipCode = zipCode;
    }
    
    public getFirstName(): string {
        return this.firstName;
    }
    
    public getLastName(): string {
        return this.lastName;
    }
    
    public getStreet(): string {
        return this.street;
    }
    
    public getCity(): string {
        return this.city;
    }
    
    public getCountry(): string {
        return this.country;
    }
    
    public getZipCode(): string {
        return this.zipCode;
    }
}

class Person {
    private address: Address;
    
    constructor(address: Address) {
        this.address = address;
    }
    
    public getAddressDetails(): string {
        return this.address.getAddressLine();
    }
}

class Address {
    private firstName: string;
    private lastName: string;
    private street: string;
    private city: string;
    private country: string;
    private zipCode: string;
    
    constructor(firstName: string, lastName: string, street: string, city: string, country: string, zipCode: string) {
        this.firstName = firstName;
        this.lastName = lastName;
        this.street = street;
        this.city = city;
        this.country = country;
        this.zipCode = zipCode;
    }
    
    public getAddressLine(): string {
        return this.firstName + " " + this.lastName +
               ", " + this.street +
               ", " + this.city + 
               ", " + this.country +
               ", ZipCode: " + this.zipCode;
    }
}