rtm_csv_export.js

function stringify({ keys, objects }) {
  let result = "";
  result += row(keys);
  for (const obj of objects) {
    result += "\r\n";
    result += row(values(obj, keys));
  }
  return result;
}
function row(values) {
  return values.map(serialize).join(",");
}
function serialize(value) {
  switch (typeof value) {
    case "string":
      return serializeString(value);
    case "number":
      return Number.isNaN(value) ? "" : String(value);
    case "bigint":
    case "boolean":
      return String(value);
    case "undefined":
      return "";
    case "object":
      if (value === null) return "";
      return serializeDate(value);
    default:
      throw new MissingCaseError(value);
  }
}
function serializeString(str) {
  return shouldFieldBeQuoted(str) ? `"${str.replace(/"/gm, '""')}"` : str;
}
function shouldFieldBeQuoted(str) {
  return str.includes(",") || str.includes('"') || str.includes("\r\n");
}
function serializeDate(date) {
  return isNaN(date.valueOf()) ? "" : date.toISOString();
}
function values(obj, keys) {
  return keys.map((key) => obj[key]);
}
class MissingCaseError extends Error {
  constructor(_value) {
    super("This should be impossible");
  }
}
function formatTask(task) {
  return {
    "Completed Date": task.getCompletedDate(),
    Completed: task.isCompleted(),
    "Created Date": task.getCreatedDate(),
    "Due Date": formatDateThatMightHaveTime(
      task.getDueDate(),
      task.hasDueTime()
    ),
    "Estimate (minutes)": task.getEstimate()?.getMinutes() || null,
    ID: task.getId(),
    List: task.getList().getName(),
    "Modified Date": task.getModifiedDate(),
    Name: task.getName(),
    "Parent Task ID": task.getParent()?.getId() || null,
    Permalink: task.getPermalink(),
    Priority: formatPriority(task.getPriority()),
    Recurring: task.isRecurring(),
    "Start Date": formatDateThatMightHaveTime(
      task.getStartDate(),
      task.hasStartTime()
    ),
    URL: task.getUrl()?.toString() || null,
  };
}
function formatDateThatMightHaveTime(date, hasTime) {
  if (!date || isNaN(date.valueOf())) return null;
  return hasTime ? date : date.toISOString().slice(0, 10);
}
function formatPriority(priority) {
  if (!priority) return null;
  const result = priority.toString();
  return result === "NoPriority" ? null : result;
}
function main() {
  const tasks = rtm.getSelectedTasks();
  if (!tasks.length) {
    return rtm.newMessage(
      "No tasks selected",
      "Select 1 or more tasks to export as CSV."
    );
  }
  const csvData = stringify({
    keys: ["Name", "Completed", "Estimate (minutes)", "Due Date", "Priority"],
    objects: tasks.map(formatTask),
  });
  return rtm.newFile(csvData, rtm.MediaType.CSV, "remember_the_milk.csv");
}
main();

Thanks thanks thanks!