import { PrepareContext, RequiredConfig, Rule, ToStringContext } from "../config";
declare function isError(data: unknown): data is Error;
export declare class MinimumErrorRule implements Rule<Error> {
    test: typeof isError;
    toString(this: this, data: Error, __config: RequiredConfig, __context: ToStringContext): string;
}
export declare class LesserErrorRule implements Rule<Error> {
    test: typeof isError;
    toString(this: this, data: Error, __config: RequiredConfig, __context: ToStringContext): string;
}
export declare class MajorErrorRule implements Rule<Error> {
    test: typeof isError;
    toString(this: this, data: Error, __config: RequiredConfig, __context: ToStringContext): string;
}
export declare class MaximumErrorRule implements Rule<Error> {
    test: typeof isError;
    prepare(this: this, data: Error, config: RequiredConfig, context: PrepareContext): void;
    toString(this: this, data: Error, config: RequiredConfig, context: ToStringContext): string;
}
export {};