Learn Functional Programming by Building a Spreadsheet - Step 79

const applyFunction = str => {
  const noHigh = highPrecedence(str);
  const infix = /([\d.]+)([+-])([\d.]+)/;

Please Tell us what’s happening in your own words.

Learning to describe problems is hard, but it is an important part of learning how to code.

Also, the more you say, the more we can help!

Your code works, I tried it.
Maybe reset the step because something else got changed by mistake.