feat: Convert to modules

scheduleRules.js

@@ -1,5 +1,5 @@
 // Rules: start and end in 24h format, interval in minutes
-const scheduleRules = [
+export const scheduleRules = [
   { start: "0:00",  end: "3:00",  interval: 180 },
   { start: "3:00",  end: "4:00",  interval: 60 },
   { start: "5:00",  end: "6:00",  interval: 30 },
@@ -9,12 +9,12 @@ const scheduleRules = [
   { start: "19:00", end: "0:00",  interval: 180 }
 ];
 
-function toMinutes(timeStr) {
+export function toMinutes(timeStr) {
   const [h, m] = timeStr.split(":").map(Number);
   return h * 60 + (m || 0);
 }
 
-function getCurrentInterval(date = new Date()) {
+export function getCurrentInterval(date = new Date()) {
   const nowMinutes = date.getHours() * 60 + date.getMinutes();
 
   for (const rule of scheduleRules) {
@@ -35,9 +35,3 @@ function getCurrentInterval(date = new Date()) {
 
   return null;
 }
-
-module.exports = {
-  scheduleRules,
-  getCurrentInterval,
-  toMinutes
-};