expect(null).toBeDefined() // pass

toBeDefined(this: MatcherState, received: unknown, expected: void) {
  const matcherName = 'toBeDefined';
  const options: MatcherHintOptions = {
    isNot: this.isNot,
    promise: this.promise,
  };
  ensureNoExpected(expected, matcherName, options);

  const pass = received !== void 0;

  const message = () =>
    matcherHint(matcherName, undefined, '', options) +
    '\n\n' +
    `Received: ${printReceived(received)}`;

  return {message, pass};
},