/**
 * ErrorMessage is a string indicating the nature of an error.
 */
export type ErrorMessage = string;
/**
 * ErrorStack is string where each line is an entry into a stack trace.
 */
export type ErrorStack = string;
/**
 * Err describes the JS Error interface independent
 * of the default Error machinery.
 *
 * This is done to avoid hacks required when extending the Error constructor.
 */
export interface Err {
    /**
     * message describing the error that occurred.
     */
    message: ErrorMessage;
    /**
     * stack contains the call stack on platforms where available.
     */
    stack?: ErrorStack;
}
/**
 * toError converts a string or an Err to an error.
 */
export declare const toError: (e: ErrorMessage | Err | Error) => Error;
export { toError as convert };
/**
 * raise the supplied Error.
 *
 * This function exists to maintain a functional style in situations where
 * you may actually want to throw an error.
 */
export declare const raise: (e: Err) => never;