import type { Options, StorybookConfig } from '@storybook/core-common';
import type { Configuration } from 'webpack';
import type { TransformOptions } from '@babel/core';
export declare function webpack(config: Configuration, options: Options): Promise<Configuration>;
export declare function babelDefault(config: TransformOptions): Promise<TransformOptions>;
export declare const previewAnnotations: StorybookConfig['previewAnnotations'];