import type { ErrorClassification } from './types';
export declare class UnsupportedProviderCapabilityError extends Error {
    readonly code = "unsupported-capability";
    readonly permanent = true;
    readonly provider: string;
    readonly capability: string;
    constructor(provider: string, capability: string, message: string);
}
export declare function extractErrorStatus(error: unknown): number | null;
export declare function baseRetryableErrorPatterns(): readonly RegExp[];
export declare function basePermanentErrorPatterns(): readonly RegExp[];
export declare function classifyErrorWithPatterns(error: unknown, retryablePatterns: readonly RegExp[], permanentPatterns: readonly RegExp[]): ErrorClassification;
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