export declare class RuleDriftError extends Error {
    readonly category: 'adapter' | 'config' | 'usage';
    constructor(message: string, category: 'adapter' | 'config' | 'usage', options?: ErrorOptions);
}
export declare class ConfigError extends RuleDriftError {
    constructor(message: string, options?: ErrorOptions);
}
export declare class AdapterError extends RuleDriftError {
    constructor(message: string, options?: ErrorOptions);
}
export declare class UsageError extends RuleDriftError {
    constructor(message: string, options?: ErrorOptions);
}
export declare function errorMessage(error: unknown): string;
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