fix counter

src/App.svelte

@@ -6,70 +6,32 @@
 <script lang="ts">
     export let name: Name;
     export let repository: Repository;
-    const timeZone = "UTC";
-    // Intl.DateTimeFormat().resolvedOptions().timeZone;
-    let start = new Date("2013-04-09");
 
-    function county(start: Date) {
-        const now = new Date();
-        const elapsed = Number(now) - Number(start);
-        // const offset =
-        //     (start.getTimezoneOffset() - now.getTimezoneOffset()) / 60;
-        console.log(timeZone, now, start, elapsed);
-        return convertMS(elapsed);
-
-        function convertMS(ms: number) {
-            let y, mt, w, d, h, m, s;
-            s = Math.floor(ms / 1000);
-            m = Math.floor(s / 60);
-            s = s % 60;
-            h = Math.floor(m / 60);
-            m = m % 60;
-            d = Math.floor(h / 24);
-            h = h % 24;
-            w = Math.floor(d / 7);
-            d = d % 7;
-            mt = Math.floor(w / 4);
-            w = w % 4;
-            y = Math.floor(mt / 12);
-            mt = 12 - (mt % 12);
-            return { y, mt, w, d, h, m, s };
-        }
-    }
+    let start = "2013-04-09";
 
-    function years(start: Date) {
-        console.log(start);
-        const now = new Date();
-        const elapsed = Number(now) - Number(start);
-        const year = 1000 * 3600 * 24 * 7 * 4 * 12;
-        console.log(elapsed / year);
-        return now.getFullYear() - start.getFullYear();
-    }
-    function months(start: Date) {
+    function county(date: string) {
         const now = new Date();
-        const elapsed = Number(now) - Number(start);
-        const month = 1000 * 3600 * 24 * 7 * 4;
-        console.log("month", 12 - ((elapsed / month) % 12));
-        return Math.trunc(12 - ((elapsed / month) % 12));
-        return years(start) * 12 + now.getMonth() - start.getMonth();
-    }
-    function weeks(start: Date) {
-        const now = new Date();
-        const elapsed = Number(now) - Number(start);
-        const week = 1000 * 3600 * 24 * 7;
-        console.log("week", 4 - ((elapsed / week) % 4));
-        return months(start) * 4;
-        // + now.getMonth() - start.getMonth();
-    }
-    function days(start: Date) {
-        const now = new Date();
-        const elapsed = Number(now) - Number(start);
-        const hour = 1000 * 3600;
-        const day = hour * 24;
-        console.log("day", (elapsed / day) % 7, (elapsed / hour) % 24);
-        return Math.trunc(elapsed / day) % 7;
-        return months(start) * 4 * 7;
-        // + now.getMonth() - start.getMonth();
+        const start = new Date(date);
+
+        return {
+            years() {
+                const elapsed = now.getTime() - start.getTime();
+                return new Date(elapsed).getFullYear() - 1970;
+            },
+            months() {
+                const elapsed = now.getMonth() - start.getMonth();
+                return (this.years() * 12 + elapsed) % 12;
+            },
+            days() {
+                const elapsed = now.getDate() - start.getDate();
+                const count = new Date(
+                    now.getFullYear(),
+                    now.getMonth() + 1,
+                    0,
+                ).getDate();
+                return (this.months() * count + elapsed) % count;
+            },
+        };
     }
 </script>
 
@@ -96,14 +58,13 @@
             />
         </label>
     </form>
-    <!-- <pre>
+    <pre>
         {JSON.stringify(county(start), null, 2)}
-    </pre> -->
+    </pre>
     <h3>{new Date().toLocaleDateString("ru")}</h3>
-    <h2>{years(new Date(start))} years</h2>
-    <h2>{months(new Date(start))} months</h2>
-    <h2>{weeks(new Date(start))} weeks</h2>
-    <h2>{days(new Date(start))} days</h2>
+    <h2>{county(start).years()} years</h2>
+    <h2>{county(start).months()} months</h2>
+    <h2>{county(start).days()} days</h2>
     <h3>{$time}</h3>
 </main>