/**
 * Standard error codes for the DEM library.
 */
export declare enum DEMErrorCode {
    DB_NOT_CONNECTED = "DEM_ERR_DB_NOT_CONNECTED",
    DB_OPERATION_FAILED = "DEM_ERR_DB_OPERATION_FAILED",
    DB_SAVE_FAILED = "DEM_ERR_DB_SAVE_FAILED",
    DB_DELETE_FAILED = "DEM_ERR_DB_DELETE_FAILED",
    MANAGERS_NOT_INITIALIZED = "DEM_ERR_MANAGERS_NOT_INITIALIZED",
    PRELOAD_FAILED = "DEM_ERR_PRELOAD_FAILED",
    LOAD_REFERENCES_FAILED = "DEM_ERR_LOAD_REFERENCES_FAILED",
    OBJECT_LOAD_FAILED = "DEM_ERR_OBJECT_LOAD_FAILED",
    STARTUP_FAILED = "DEM_ERR_STARTUP_FAILED",
    VERSION_MISMATCH = "DEM_ERR_VERSION_MISMATCH",
    MISSING_ARGUMENT = "DEM_ERR_MISSING_ARGUMENT",
    MISSING_ID = "DEM_ERR_MISSING_ID",
    INVALID_ARGUMENT = "DEM_ERR_INVALID_ARGUMENT",
    INVALID_CONSTRUCTOR = "DEM_ERR_INVALID_CONSTRUCTOR",
    INVALID_MODEL = "DEM_ERR_INVALID_MODEL",
    INVALID_EVENT = "DEM_ERR_INVALID_EVENT",
    UNKNOWN_EVENT = "DEM_ERR_UNKNOWN_EVENT",
    UNDEFINED_EVENT = "DEM_ERR_UNDEFINED_EVENT",
    PROPERTY_NOT_FOUND = "DEM_ERR_PROPERTY_NOT_FOUND",
    CANNOT_SET_REF_DIRECTLY = "DEM_ERR_CANNOT_SET_REF_DIRECTLY",
    OBJECT_NOT_FOUND = "DEM_ERR_OBJECT_NOT_FOUND",
    DOCUMENT_NOT_FOUND = "DEM_ERR_DOCUMENT_NOT_FOUND",
    OBJECT_CREATE_FAILED = "DEM_ERR_OBJECT_CREATE_FAILED",
    OBJECT_DELETE_FAILED = "DEM_ERR_OBJECT_DELETE_FAILED",
    OBJECT_GET_FAILED = "DEM_ERR_OBJECT_GET_FAILED",
    REFERENCE_RESOLUTION_FAILED = "DEM_ERR_REFERENCE_RESOLUTION_FAILED",
    PRELOAD_TIMEOUT = "DEM_ERR_PRELOAD_TIMEOUT",
    ACCESS_DENIED = "DEM_ERR_ACCESS_DENIED",
    UNAUTHORIZED = "DEM_ERR_UNAUTHORIZED",
    SOCKET_NOT_CONNECTED = "DEM_ERR_SOCKET_NOT_CONNECTED",
    SOCKET_FAILURE = "DEM_ERR_SOCKET_FAILURE",
    TIMEOUT = "DEM_ERR_TIMEOUT",
    STORAGE_NOT_SUPPORTED = "DEM_ERR_STORAGE_NOT_SUPPORTED",
    STORAGE_OPERATION_FAILED = "DEM_ERR_STORAGE_OPERATION_FAILED",
    DELTA_SYNC_FAILED = "DEM_ERR_DELTA_SYNC_FAILED",
    ARRAY_MUTATION_FAILED = "DEM_ERR_ARRAY_MUTATION_FAILED",
    CONCURRENT_MODIFICATION = "DEM_ERR_CONCURRENT_MODIFICATION",
    INDEX_OUT_OF_BOUNDS = "DEM_ERR_INDEX_OUT_OF_BOUNDS",
    INTERNAL_ERROR = "DEM_ERR_INTERNAL_ERROR"
}
/**
 * Standard descriptions for DEM error codes.
 */
export declare const DEM_ERROR_DESCRIPTIONS: Record<DEMErrorCode, string>;
/**
 * Returns the human-readable description for a given error code.
 *
 * @param code - The DEM error code enum value.
 * @returns Standard descriptive message corresponding to the error code.
 */
export declare function getDEMErrorDescription(code: DEMErrorCode): string;
/**
 * Standard typed Error class for DEM.
 * Enforces structured error codes and optional diagnostic payloads.
 */
export declare class DEMError extends Error {
    readonly code: DEMErrorCode;
    readonly details?: unknown;
    readonly timestamp: number;
    /**
     * Constructs a new DEMError instance.
     *
     * @param code - The typed error code.
     * @param message - Descriptive error message.
     * @param details - Optional arbitrary diagnostic data.
     */
    constructor(code: DEMErrorCode, message: string, details?: unknown);
    /**
     * Serializes the error instance to a JSON-compatible object.
     *
     * @returns Plain object representation of the DEMError.
     */
    toJSON(): {
        name: string;
        code: DEMErrorCode;
        message: string;
        details: unknown;
        timestamp: number;
    };
}
/**
 * Converts an unknown caught error or object into a typed DEMError instance.
 *
 * @param err - The caught error or value.
 * @param defaultCode - Fallback error code when the source is not a DEMError.
 * @returns Standard DEMError instance.
 */
export declare function toDEMError(err: unknown, defaultCode?: DEMErrorCode): DEMError;