Custom error messages with Jest for assertions

Unclear error message: undefined
A pretty non-helpful message

However, as discussed in these posts, it apparently is:

The solution

add a try-catch block with a `console.error()` inside
message is showing, but the test is passing
add a try-catch block with a `console.error()` inside
Throw the error 🏈
message is showing and the test is FAILING :)
The message is showing and the test is FAILING :)

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