add objectid util functions

src/utils/objectId.ts

@@ -0,0 +1,24 @@
+import _ from 'lodash';
+
+export function isValidObjectId(objectId?: string): boolean {
+  return !_.isNil(objectId) && /^[0-9a-fA-F]{24}$/.test(objectId);
+}
+
+export function objectIdToDate(objectId: string): Date {
+  return new Date(Number.parseInt(objectId.substring(0, 8), 16) * 1000);
+}
+
+export function objectIdFromDate(milliseconds: number, onlyDate: boolean = false): string {
+  const suffixReplacer = () => {
+    if (onlyDate) {
+      return '0';
+    }
+
+    return (Math.random() * 16 | 0).toString(16);
+  };
+
+  const timestamp = (milliseconds / 1000 | 0).toString(16);
+  const suffix = 'xxxxxxxxxxxxxxxx'.replace(/[x]/g, suffixReplacer).toLowerCase();
+
+  return `${timestamp}${suffix}`;
+}