refactor(core): Delete boilerplate code across migrations (no-changelog) (#5254)

packages/cli/src/databases/migrations/postgresdb/1648740597343-LowerCaseUserEmail.ts

@@ -1,16 +1,10 @@
-import { MigrationInterface, QueryRunner } from 'typeorm';
-import { getTablePrefix } from '@db/utils/migrationHelpers';
+import type { MigrationContext, IrreversibleMigration } from '@db/types';
 
-export class LowerCaseUserEmail1648740597343 implements MigrationInterface {
-	name = 'LowerCaseUserEmail1648740597343';
-
-	public async up(queryRunner: QueryRunner): Promise<void> {
-		const tablePrefix = getTablePrefix();
+export class LowerCaseUserEmail1648740597343 implements IrreversibleMigration {
+	async up({ queryRunner, tablePrefix }: MigrationContext) {
 		await queryRunner.query(`
 			UPDATE "${tablePrefix}user"
 			SET email = LOWER(email);
 		`);
 	}
-
-	public async down(queryRunner: QueryRunner): Promise<void> {}
 }