const found = BOOK_DAYS.find(bookDay => bookDay.month === month && bookDay.day === day); return found ? found.name : null;
import isBookToday, getBookDayName from './book-days'; // Check today if (isBookToday()) console.log( Yes! Today is $getBookDayName(). ); else console.log("Not a recognized book day."); isbooktoday
Then implement a helper to compute the actual date. test("isBookToday returns true on April 23", () => const april23 = new Date(2026, 3, 23); expect(isBookToday(april23)).toBe(true); ); const found = BOOK_DAYS
I’ll provide a clean, reusable version in TypeScript/JavaScript. Goal Return true if today (or a specified date) matches a predefined list of book-related days. Implementation // book-days.ts type BookDayRule = month: number; // 1-12 day: number; // 1-31 name: string; ; ); else console
// Check a specific date const testDate = new Date(2026, 3, 23); // April 23, 2026 console.log(isBookToday(testDate)); // true console.log(getBookDayName(testDate)); // "World Book Day" If you need to handle dynamic book days (e.g., first Thursday of March), modify the rule structure:
// Optional: get the name of the book day if true export function getBookDayName(date: Date = new Date()): string | null const month = date.getMonth() + 1; const day = date.getDate();