export declare class GitHubFetchError extends Error {
    status: number;
    body: string;
    constructor(status: number, body: string, message: string);
}
export interface GitHubFetchOptions {
    /** Returns the current token or null. Defaults to the OS keychain. */
    tokenProvider?: () => string | null;
    /** Fetch impl (DI for tests). Defaults to globalThis.fetch. */
    fetchImpl?: typeof fetch;
    /** Sleep impl (DI for tests). Defaults to setTimeout. */
    sleep?: (ms: number) => Promise<void>;
    /** vskill CLI version; used in User-Agent. Defaults to "vskill". */
    version?: string;
    /** Override allowed hostname set (testing only). */
    allowedHosts?: Set<string>;
}
export type GitHubFetch = (url: string, init?: RequestInit) => Promise<Response>;
export declare function resolveGitHubEnvToken(env?: NodeJS.ProcessEnv): string | null;
export declare function createGitHubFetch(opts?: GitHubFetchOptions): GitHubFetch;
export declare function githubFetch(url: string, init?: RequestInit): Promise<Response>;
/** Test-only reset hook. */
export declare function _resetDefaultGitHubFetchForTests(): void;