import { BaseError } from './base-error';
/**
 * Error class with code property
 */
export declare class CodeError<CodeType = string> extends BaseError {
    code: CodeType;
    constructor(msg: string, code: CodeType);
}
export declare function isCodeError<OError extends CodeError, CodeType = string>(code: CodeType, err: Error | OError | unknown): err is OError;