import type { LTStartConfig, LTInstance } from '../types/startup';
/**
 * Start Long Tail with a declarative configuration.
 *
 * Handles database connection, migrations, adapter registration,
 * worker startup, and the embedded API server. Returns a client
 * for starting workflows and a shutdown function.
 *
 * @example Standard worker
 * ```typescript
 * import { start } from '@hotmeshio/long-tail';
 * import * as myWorkflow from './workflows/my-workflow';
 *
 * const lt = await start({
 *   database: { host: 'localhost', port: 5432, user: 'postgres', password: 'password', database: 'mydb' },
 *   workers: [
 *     { taskQueue: 'my-queue', workflow: myWorkflow.myWorkflow },
 *   ],
 * });
 * ```
 *
 * @example Dashboard for a remote system
 *
 * Point at another system's Postgres database and register its workflows
 * by name with `readonly` connections. The dashboard discovers and displays
 * them, and invocations are picked up by the real workers in the other system.
 *
 * ```typescript
 * import { start } from '@hotmeshio/long-tail';
 *
 * const lt = await start({
 *   database: { connectionString: 'postgres://shared-db:5432/other-system' },
 *   workers: [
 *     { taskQueue: 'ingest', workflow: 'orderPipeline', connection: { readonly: true } },
 *     { taskQueue: 'ingest', workflow: 'invoiceReconciler', connection: { readonly: true } },
 *     { taskQueue: 'billing', workflow: 'paymentProcessor', connection: { readonly: true } },
 *   ],
 *   server: { port: 4000 },
 * });
 *
 * // Workflows appear in the dashboard UI — invoke, audit, and view executions
 * // without competing for work. The real workers handle execution.
 * ```
 */
export declare function start(startConfig: LTStartConfig): Promise<LTInstance>;