/**
 * Fetch-based Google API client — replaces the 110 MB googleapis package.
 *
 * Uses google-auth-library for token management and native fetch for HTTP.
 * All non-2xx responses throw GoogleApiError to preserve the error contract
 * expected by mapGoogleError() / withRetry() in errors.ts.
 */
import type { GDocsDocument, GDocsBatchUpdateResponse, GDocsRequest } from './google-api-types.js';
/**
 * Error class that preserves the contract expected by mapGoogleError() / withRetry().
 * extractHttpCode() checks error.code and error.response.status.
 */
export declare class GoogleApiError extends Error {
    code: number;
    response: {
        status: number;
        headers?: Headers;
    };
    body?: unknown;
    constructor(status: number, message: string, body?: unknown, headers?: Headers);
}
export type BatchUpdateBody = {
    requests: GDocsRequest[];
    writeControl?: {
        requiredRevisionId?: string;
    };
};
/**
 * Lightweight Google API client backed by native fetch.
 *
 * Covers the 6 endpoints used by google-docs-core:
 * - Docs: getDocument, batchUpdate
 * - Drive: createFile, deleteFile, shareFile, exportAsDocx
 */
export declare class GoogleApiClient {
    private getAccessToken;
    constructor(getAccessToken: () => Promise<string>);
    /** GET documents/{id}?includeTabsContent=true */
    getDocument(documentId: string): Promise<GDocsDocument>;
    /** POST documents/{id}:batchUpdate */
    batchUpdate(documentId: string, body: BatchUpdateBody): Promise<GDocsBatchUpdateResponse>;
    /** POST drive/v3/files — create a file, return the file ID */
    createFile(name: string, mimeType: string): Promise<string>;
    /** DELETE drive/v3/files/{id} */
    deleteFile(fileId: string): Promise<void>;
    /** POST drive/v3/files/{id}/permissions — share a file */
    shareFile(fileId: string, email: string, role: string): Promise<void>;
    /**
     * GET drive/v3/files/{id}/export?mimeType=application/vnd.openxmlformats-officedocument.wordprocessingml.document
     *
     * Exports a Google Doc as a DOCX file. Returns the raw bytes as a Buffer.
     *
     * **Note:** The Drive export API has a 10 MB limit for Google Workspace files.
     * Files exceeding this limit will return an error.
     */
    exportAsDocx(fileId: string): Promise<Buffer>;
    private fetchJson;
    private fetchRaw;
}
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