export declare class FileReplacementUpgrader {
    private sourceContentFilePath;
    private writeToFilePath;
    private messages;
    /**
     * the constructor.
     * @param sourceContentFilePath the source file path.
     * @param writeToFilePath the write to file path.
     * @param fileName the file name.
     */
    constructor(sourceContentFilePath: string, writeToFilePath: string, fileName?: string);
    /**
     * the run function to resolve the errors.
     */
    run(): Promise<void>;
}