for each with &

[edemaine]

Input

for each bit of &
  Number bit

Output

$ => { const results=[];for (let i = 0, len = &.length; i < len; i++) {$ => { const bit = $1[i];return};
  results.push(Number(bit))
};return results;}

Lots wrong here: &.length, two levels of $ =>

By contrast, for (without each) works fine.