M.I.M.I.R - Multi-agent Intelligent Memory & Insight Repository

# Task Output: worker-3 ```typescript import { describe, it, expect } from 'vitest'; describe('formatDate', () => { it('should return the date in short format for valid input', () => { const date = new Date('2023-10-01'); const result = formatDate(date, 'short'); expect(result).toBe(date.toLocaleDateString()); }); it('should return the date in long format for valid input', () => { const date = new Date('2023-10-01'); const result = formatDate(date, 'long'); expect(result).toBe( date.toLocaleDateString('en-US', { weekday: 'long', year: 'numeric', month: 'long', day: 'numeric', }) ); }); it('should throw an error for an invalid date', () => { const invalidDate = new Date('invalid-date'); expect(() => formatDate(invalidDate, 'short')).toThrow('Invalid date'); }); it('should throw an error if the input is not a Date object', () => { expect(() => formatDate('2023-10-01' as any, 'short')).toThrow( 'Invalid date' ); }); }); ```