mux operator, muxers.mjs with pick variants

prettier

prettier2

clamp?

Revert "clamp?"

This reverts commit 83a3b91.

Revert "prettier2"

This reverts commit de13871.

Revert "prettier"

This reverts commit 1550bf4.

Revert "mux operator, muxers.mjs with pick variants"

This reverts commit af062f9.