/**
 * @module transformers
 */
import * as ts from "typescript";
/**
 * Transform a typescript stories file by adding `executeCyTests` to the bottom
 * with all exports explicitly passed in and the default recreated to be passed
 * in as 'default' prop.
 *
 * In webpack, can use with ts-loader like so
 * ```ts
 * {
 *   test: /\.[jt]sx?$/,
 *   exclude: [/node_modules/],
 *   use: [
 *     {
 *       loader: "ts-loader",
 *       options: {
 *         happyPackMode: true,
 *         transpileOnly: true,
 *         ...(useIsolatedComponentFiles && {
 *           getCustomTransformers: () => ({
 *             before: [transformIsolatedComponentFiles()],
 *           }),
 *         }),
 *       },
 *     },
 *   ],
 * }
 * ```
 *
 * To include mdx files as tests, add this to module rules
 * ```ts
 * {
 *   test: /\.mdx$/,
 *   use: [
 *     <above ts-loader config>,
 *     {
 *       loader: require.resolve("@storybook/mdx1-csf/loader"),
 *       options: { skipCsf },
 *     },
 *   ],
 * },
 * ```
 * see {@link bundlers.cypressWebpackConfigMdx} for an abstraction to do just that,
 * as well as load non-story mdx and md files.
 */
export declare const transformIsolatedComponentFiles: (executeCyTestsLocation?: string, storyPattern?: string | RegExp) => ts.TransformerFactory<ts.SourceFile>;