/**
 * @author darrmill@microsoft.com, yefuwang@microsoft.com
 */
import { FxError, Result } from "@microsoft/teamsfx-api";
export declare class HelperMethods {
    static copyAddinFiles(fromFolder: string, toFolder: string): void;
    static updateManifest(projectRoot: string, addinManifestPath: string): Promise<void>;
    static moveManifestLocation(projectRoot: string, manifestRelativePath: string): Promise<void>;
    static fetchAndUnzip(component: string, zipUrl: string, targetDir: string, skipRootFolder?: boolean): Promise<Result<undefined, FxError>>;
}
export declare function unzipErrorHandler(projectFolder: string, reject: any, error: Error): void;
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