[perfunctory]

> Your critique is about Chai choosing an API design you do not agree with.

I am not criticising the design choice but rather the inability to make a choice.

> JS fatigue is about having to choose between Chai, Mocha, Karma...

And once you made that choice you still have to choose between three different api styles, apparently.

[antonkm]

You're still mixing apples and pears. A single libs API is not JS fatigue. One could argue that it's actually the opposite; supporting three different APIs might make the transition from another lib easier.