untitled

function diagnoseForm() {
  const form = FormApp.getActiveForm();

  if (!form) {
    throw new Error("Open Apps Script from your Google Form.");
  }

  Logger.log("FORM: " + form.getTitle());
  Logger.log("TOTAL ITEMS: " + form.getItems().length);

  form.getItems().forEach((item, index) => {
    const type = item.getType();

    Logger.log(
      `\n${index + 1}. ${item.getTitle()} [${type}]`
    );

    try {
      let field;

      switch (type) {
        case FormApp.ItemType.MULTIPLE_CHOICE:
          field = item.asMultipleChoiceItem();
          break;
        case FormApp.ItemType.CHECKBOX:
          field = item.asCheckboxItem();
          break;
        case FormApp.ItemType.LIST:
          field = item.asListItem();
          break;
        case FormApp.ItemType.TEXT:
          field = item.asTextItem();
          break;
        case FormApp.ItemType.PARAGRAPH_TEXT:
          field = item.asParagraphTextItem();
          break;
        case FormApp.ItemType.SCALE:
          field = item.asScaleItem();
          break;
        case FormApp.ItemType.GRID:
          field = item.asGridItem();
          break;
        case FormApp.ItemType.CHECKBOX_GRID:
          field = item.asCheckboxGridItem();
          break;
        default:
          Logger.log("Non-answer item or unsupported type");
          return;
      }

      Logger.log("Required: " + field.isRequired());

      if (typeof field.getChoices === "function") {
        Logger.log(
          "Choices: " +
          JSON.stringify(
            field.getChoices().map(c => c.getValue())
          )
        );
      }

      if (typeof field.getRows === "function") {
        Logger.log("Rows: " + JSON.stringify(field.getRows()));
        Logger.log(
          "Columns: " + JSON.stringify(field.getColumns())
        );
      }

      if (type === FormApp.ItemType.SCALE) {
        Logger.log(
          `Scale: ${field.getLowerBound()}–${field.getUpperBound()}`
        );
      }

    } catch (error) {
      Logger.log("ERROR: " + error.message);
    }
  });
}