/**
 * Minimal logger interface — compatible with `console`, pino, winston, and
 * any other logger that exposes `debug / info / warn` methods.
 *
 * Pass an instance to `openShell` or `ShellSessionOptions` to receive
 * diagnostic output from `ShellSession`. When omitted, all logging is silent.
 *
 * @example opt in with console:
 * ```typescript
 * const shell = await client.openShell({ runtimeArn, logger: console })
 * ```
 * @example opt in with pino:
 * ```typescript
 * const shell = await client.openShell({ runtimeArn, logger: pinoInstance })
 * ```
 */
export interface Logger {
    debug: (...args: unknown[]) => void;
    info: (...args: unknown[]) => void;
    warn: (...args: unknown[]) => void;
}
/** Silent logger used as the default — no output unless the caller opts in. */
export declare const noopLogger: Logger;
/** Reconnection configuration for ShellSession. */
export declare const DEFAULT_MAX_RETRIES = 5;
export declare const DEFAULT_BASE_DELAY = 1000;
export declare const DEFAULT_MAX_DELAY = 15000;
export declare const DEFAULT_METADATA_TIMEOUT = 10000;
export declare const DEFAULT_RECONNECT_WINDOW = 900000;
export declare const DEFAULT_OUTER_LOOP_DELAY = 30000;
export declare const DEFAULT_KEEPALIVE_INTERVAL = 30000;
/**
 * Configuration for automatic reconnection on WebSocket disconnect.
 *
 * When provided to `openShell`, `ShellSession` will automatically reconnect
 * using the same `shellId` so the shell's working directory, environment, background jobs,
 * and up to 256 KB of buffered output are preserved.
 *
 * @example
 * ```typescript
 * const config: ReconnectConfig = {
 *   maxRetries: 5,
 *   reconnectWindow: null, // unlimited
 *   onReconnect: async (reconnected) => {
 *     if (reconnected) console.log('Reattached — buffered output will follow')
 *     else console.log('New shell started')
 *   }
 * }
 * const shell = await client.openShell(runtimeArn, { reconnectConfig: config })
 * ```
 */
export interface ReconnectConfig {
    /**
     * Maximum reconnect attempts per inner loop before pausing. Defaults to 5.
     */
    maxRetries?: number;
    /**
     * Initial backoff delay in milliseconds. Doubles on each attempt up to maxDelay. Defaults to 1000.
     */
    baseDelay?: number;
    /**
     * Upper bound on backoff delay in milliseconds. Defaults to 15000.
     */
    maxDelay?: number;
    /**
     * Total milliseconds to keep retrying after a disconnect before giving up.
     * Set to null to retry indefinitely. Defaults to 900000 (~15 min).
     */
    reconnectWindow?: number | null;
    /**
     * Milliseconds to wait between inner loop exhaustion and next outer retry cycle. Defaults to 30000.
     */
    outerLoopDelay?: number;
    /**
     * Optional callback invoked after each successful reconnect.
     * Receives `reconnected: true` when the existing PTY was reattached;
     * `false` when a fresh shell was started.
     */
    onReconnect?: (reconnected: boolean) => void | Promise<void>;
}
//# sourceMappingURL=config.d.ts.map