I don't mind extending js, optional chaining and nulish coalescence are awesome, but this proposal is just alien! What's up with that implicit % argument?? Wh

I don't mind extending js, optional chaining and nulish coalescence are awesome, but this proposal is just alien! What's up with that implicit % argument?? Why are the authors so opposed to temporary variables? Having more explicit and correctly named variables makes the code so much easier to read vs slapping a % in the middle of the code. I would love to have pipes, but this is kinda ugly to me.