import type { ProviderConfig } from "../types.js";
/** HTTP error returned by an LLM provider request. */
export declare class LlmRequestError extends Error {
    /** HTTP response status. */
    readonly status: number;
    /** Parsed JSON response body, or the raw response text. */
    readonly body?: unknown;
    /**
     * @param status - HTTP response status.
     * @param message - Error message.
     * @param body - Parsed or raw provider response body.
     */
    constructor(status: number, message: string, body?: unknown);
}
export declare function buildEndpoint(config: ProviderConfig, path: string): string;
export declare function buildHeaders(config: ProviderConfig): Record<string, string>;
export declare function throwLlmRequestError(res: Response): Promise<never>;
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