AdaptParameter3.ts

// New interface comes from applying Extract Interface to the wrapper
interface LibraryData {
    getLibraryName(): string;
}

// Notice how we renamed the wrapper to free the interface name
class AcmeInputReaderLibraryData implements LibraryData {
    private readonly inputReader: AcmeInputReader ;

    constructor(inputReader: AcmeInputReader) {
        this.inputReader = inputReader;
    }

    // moved method
    getLibraryName(): string {
        return this.inputReader.readLine();
    }
}

class Library {
    private display: Display;

    constructor(display: Display) {
        this.display = display;
    }

    // After applying Parameterize Method and then Extract Interface
    printBooks(books: Book[], libraryData: LibraryData): void {
        const libraryName = libraryData.getLibraryName();
        this.display.show(libraryName);
        for (const book of books) {
            this.display.show(book.getName());
        }
    }
}