text: const {bind} = require('./_30s.js');
  
  test('bind is a Function', () => {
    expect(bind).toBeInstanceOf(Function);
  });
  function greet(greeting, punctuation) {
    return greeting + ' ' + this.user + punctuation;
  }
  const freddy = { user: 'fred' };
  const freddyBound = bind(greet, freddy);
  test('Binds to an object context', () => {
    expect(freddyBound('hi', '!')).toBe('hi fred!');
  });
  