event.target don't provide properties as name, id, type. Just the property "value"

Kata should update to allow new syntaxes and commands including useState and useRef. (currently they cannot be used)

Different functions are mocked in the sample and actual tests, in sample tests global.setInterval is mocked while in the actual tests setInterval is mocked. They're different.

The entirety of this custom fetch function is illegal: it doesn't obey the standards of window.fetch, which should return a response object that requires .json() to read.

And why reading .json file returns text as a string?

There is 'select' id instead of 'priority' in the last test.

It is lead to "event.target.id === 'select' ? 'priority' : event.target.id" construction.

The test description is wrong:

creates a timer and stores a reference to it as a class property `this.timeId`

the actual testcase tested the class property this.timerId. Notice timer vs time.

Got me stuck for a long time...