How to use the @nteract/commutable.makeCodeCell function in @nteract/commutable

// from === "code"
  if (from === "code") {
    nextState = cleanCellTransient(
      state
        .deleteIn(["notebook", "cellMap", id, "execution_count"])
        .deleteIn(["notebook", "cellMap", id, "outputs"]),
      id
    );
  }

  switch (to) {
    case "code":
      return nextState.setIn(
        ["notebook", "cellMap", id],
        makeCodeCell({
          source: cell.source
        })
      );
    case "markdown":
      return nextState.setIn(
        ["notebook", "cellMap", id],
        makeMarkdownCell({
          source: cell.source
        })
      );
    case "raw":
      return nextState.setIn(
        ["notebook", "cellMap", id],
        makeRawCell({
          source: cell.source
        })