refactor: Setup typescript project references across workflow, core, and cli (#4519)

* refactor: use consistent folder structure across workflow, core, and cli

* setup typescript project references across workflow, core, and cli

packages/cli/src/commands/db/revert.ts

@@ -0,0 +1,62 @@
+/* eslint-disable @typescript-eslint/no-unsafe-member-access */
+/* eslint-disable no-console */
+import { Command, flags } from '@oclif/command';
+import { Connection, ConnectionOptions, createConnection } from 'typeorm';
+import { LoggerProxy } from 'n8n-workflow';
+
+import { getLogger } from '@/Logger';
+
+import * as Db from '@/Db';
+
+export class DbRevertMigrationCommand extends Command {
+	static description = 'Revert last database migration';
+
+	static examples = ['$ n8n db:revert'];
+
+	static flags = {
+		help: flags.help({ char: 'h' }),
+	};
+
+	// eslint-disable-next-line @typescript-eslint/explicit-module-boundary-types
+	async run() {
+		const logger = getLogger();
+		LoggerProxy.init(logger);
+
+		// eslint-disable-next-line @typescript-eslint/no-shadow, @typescript-eslint/no-unused-vars
+		const { flags } = this.parse(DbRevertMigrationCommand);
+
+		let connection: Connection | undefined;
+		try {
+			await Db.init();
+			connection = Db.collections.Credentials.manager.connection;
+
+			if (!connection) {
+				throw new Error(`No database connection available.`);
+			}
+
+			const connectionOptions: ConnectionOptions = Object.assign(connection.options, {
+				subscribers: [],
+				synchronize: false,
+				migrationsRun: false,
+				dropSchema: false,
+				logging: ['query', 'error', 'schema'],
+			});
+
+			// close connection in order to reconnect with updated options
+			await connection.close();
+			connection = await createConnection(connectionOptions);
+
+			await connection.undoLastMigration();
+			await connection.close();
+		} catch (error) {
+			if (connection) await connection.close();
+
+			console.error('Error reverting last migration. See log messages for details.');
+			// eslint-disable-next-line @typescript-eslint/no-unsafe-argument
+			logger.error(error.message);
+			this.exit(1);
+		}
+
+		this.exit();
+	}
+}