Create create-date.js

lib/create-date.js

@@ -0,0 +1,24 @@
+const entries = [
+    [1000000, 1380326400], // 2013
+    [2768409, 1383264000],
+    [7679610, 1388448000],
+    [11538514, 1391212000], // 2014
+    [6925870357, 1701192327], // 2024
+].sort((a, b) => a[0] - b[0]); // Sort by user ID
+
+function parseRegistrationTime(prefix, reg_time) {
+    return { prefix, date: new Date(reg_time * 1000).toISOString() };
+}
+
+function predictCreationDate(userId) {
+    for (let i = 1; i < entries.length; i++) {
+        if (userId >= entries[i - 1][0] && userId <= entries[i][0]) {
+            const t = (userId - entries[i - 1][0]) / (entries[i][0] - entries[i - 1][0]);
+            const reg_time = Math.floor(entries[i - 1][1] + t * (entries[i][1] - entries[i - 1][1]));
+            return parseRegistrationTime("~", reg_time);
+        }
+    }
+    return userId <= 1000000
+        ? parseRegistrationTime("<", 1380326400)
+        : parseRegistrationTime(">", 1701192327);
+}