migration to convert all emails to lowercase

database/migrations/0025-emails_to_lower.ts

@@ -0,0 +1,16 @@
+/* MIGRATION TO MAKE ALL EMAILS LOWERCASE
+ *
+ * Make all `email` values in `users` lowercase.
+ * This allows safe queries without any modificators
+ */
+
+/* eslint-disable @typescript-eslint/explicit-module-boundary-types */
+/* eslint-disable @typescript-eslint/no-explicit-any */
+
+export async function upgrade(queryFn: (query: string, values?: any[]) => Promise<Array<any>>) {
+  await queryFn('UPDATE `users` SET `email` = LOWER(`email`);')
+}
+
+export async function downgrade(queryFn: (query: string, values?: any[]) => Promise<Array<any>>) {
+  // This migration cannot be revered
+}