/**
 * Determines if the application is running in a local development environment.
 *
 * This function checks for the presence of the AWS_LAMBDA_FUNCTION_NAME environment
 * variable to determine if the code is running in AWS Lambda (production) or
 * locally (development).
 *
 * @returns True if running locally, false if running in AWS Lambda
 *
 * @example
 * ```typescript
 * if (isLocal()) {
 *   console.log('Running in development mode');
 * } else {
 *   console.log('Running in production (AWS Lambda)');
 * }
 * ```
 */
export declare const isLocal: () => boolean;
/**
 * Log an internal MRT error.
 *
 * @param namespace Namespace for the error (e.g. data_store, redirect) to facilitate searching
 * @param err Error to log
 * @param context Optional context to include in the log
 */
export declare const logMRTError: (namespace: string, err: unknown, context?: Record<string, unknown>) => void;