/**
 * Fixes the content of an index file by overwriting it with a predefined correct content.
 * This function is specifically designed to correct `synthtool`-generated index files
 * to ensure the proper export of `v2`, `StorageControlClient`, and `protos`.
 *
 * @param filePath The path to the index file to fix, relative to the project root.
 */
export declare function fixIndexFile(filePath: string): void;
/**
 * Fixes the v2 index file by ensuring the `StorageClient` is exported.
 * If the export statement is missing, it appends it to the file.
 *
 * @param filePath The path to the v2 index file to fix, relative to the current directory.
 */
export declare function fixV2Index(filePath: string): void;