[Feature]: arrayOf matcher

[jfgreffier]

🚀 Feature Request

Adding a built-in arrayOf matcher would be a nice addition to generic assertions.

Example

An example from Jest documentation:

test('all elements in array are strings', () => {
  expect(['apple', 'banana', 'cherry']).toEqual(
    expect.arrayOf(expect.any(String)),
  );
});

Motivation

arrayOfis the only asymmetric matcher that exists in Jest's expect and not in Playwright. It can be useful for API tests, to ensure that an Object has an Array of "something".

[jfgreffier]

That was fast 😄