import { type ValidationRequestBody } from '../_shared/validation';
/**
 * Loose API-Gateway event/result/context shapes — `headers` and similar maps
 * intentionally widen to `string | undefined` so they line up with the
 * official `@types/aws-lambda` definitions used by callers/tests.
 */
export interface APIGatewayProxyEvent {
    body: string | null;
    headers: {
        [key: string]: string | undefined;
    };
    httpMethod: string;
    path: string;
    queryStringParameters: {
        [key: string]: string | undefined;
    } | null;
    pathParameters: {
        [key: string]: string | undefined;
    } | null;
    isBase64Encoded?: boolean;
}
export interface APIGatewayProxyResult {
    statusCode: number;
    headers?: {
        [key: string]: string;
    };
    body: string;
}
export interface LambdaContext {
    functionName: string;
    functionVersion: string;
    awsRequestId: string;
    remainingTimeInMillis: number;
}
interface ValidateResponse {
    success: boolean;
    data?: unknown;
    error?: string;
}
export declare function apiGatewayHandler(event: APIGatewayProxyEvent, _context: LambdaContext): Promise<APIGatewayProxyResult>;
export declare function lambdaHandler(event: ValidationRequestBody, _context: LambdaContext): Promise<ValidateResponse>;
export declare function cacheHandler(event: {
    action: 'clear' | 'stats';
}, _context: LambdaContext): Promise<{
    success: boolean;
    message?: string;
    stats?: unknown;
}>;
export declare function handler(event: APIGatewayProxyEvent, _context?: unknown): Promise<APIGatewayProxyResult>;
declare const _default: {
    apiGatewayHandler: typeof apiGatewayHandler;
    lambdaHandler: typeof lambdaHandler;
    cacheHandler: typeof cacheHandler;
    handler: typeof handler;
};
export default _default;