Fixed 267U.pre2

packages/backend/built/misc/gen-id.js

@@ -0,0 +1,23 @@
+import { init, createId } from "@paralleldrive/cuid2";
+import config from "../config/index.js";
+const TIME2000 = 946684800000;
+const TIMESTAMP_LENGTH = 8;
+const length = Math.min(Math.max(config.cuid?.length ?? 16, 16), 24) - TIMESTAMP_LENGTH;
+const fingerprint = `${config.cuid?.fingerprint ?? ""}${createId()}`;
+const genCuid2 = init({
+    length,
+    fingerprint
+});
+/**
+ * The generated ID results in the form of `[8 chars timestamp] + [cuid2]`.
+ * The minimum and maximum lengths are 16 and 24, respectively.
+ * With the length of 16, namely 8 for cuid2, roughly 1427399 IDs are needed
+ * in the same millisecond to reach 50% chance of collision.
+ *
+ * Ref: https://github.com/paralleldrive/cuid2#parameterized-length
+ */ export function genId(date) {
+    const now = (date ?? new Date()).getTime();
+    const time = Math.max(now - TIME2000, 0);
+    const timestamp = time.toString(36).padStart(TIMESTAMP_LENGTH, "0");
+    return `${timestamp}${genCuid2()}`;
+}