Matchers very slow for large objects

[overlookmotel]

Bug

• package version: 3.2.0
• node version: 16.18.1
• npm version: 8.19.2

Relevant code or config:

const obj = {};
for (let i = 0; i < 100000; i++) {
  obj[`_${i}`] = i;
}

it('is an object', () => {
  expect(obj).toBeObject();
});

This test takes approx 7 seconds to complete. NB that's 7 secs just to run the expectation, not including building the object.

Reason is that toBeObject creates both the pass and fail messages even if the test passes. This includes calling printReceived() on the input, and when the input is large, this takes a long time.

Neither message is used when the test passes, so this is unnecessary.

Pretty much all the other matchers are affected by the same issue.

I will submit a PR to fix this.