@web/storybook-builder/dist/generate-stories-script.js

Storybook builder powered by `@web/dev-server`

"use strict";
// based on https://github.com/storybookjs/storybook/blob/v9.1.20/code/builders/builder-vite/src/codegen-importfn-script.ts
var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
    if (k2 === undefined) k2 = k;
    var desc = Object.getOwnPropertyDescriptor(m, k);
    if (!desc || ("get" in desc ? !m.__esModule : desc.writable || desc.configurable)) {
      desc = { enumerable: true, get: function() { return m[k]; } };
    }
    Object.defineProperty(o, k2, desc);
}) : (function(o, m, k, k2) {
    if (k2 === undefined) k2 = k;
    o[k2] = m[k];
}));
var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
    Object.defineProperty(o, "default", { enumerable: true, value: v });
}) : function(o, v) {
    o["default"] = v;
});
var __importStar = (this && this.__importStar) || (function () {
    var ownKeys = function(o) {
        ownKeys = Object.getOwnPropertyNames || function (o) {
            var ar = [];
            for (var k in o) if (Object.prototype.hasOwnProperty.call(o, k)) ar[ar.length] = k;
            return ar;
        };
        return ownKeys(o);
    };
    return function (mod) {
        if (mod && mod.__esModule) return mod;
        var result = {};
        if (mod != null) for (var k = ownKeys(mod), i = 0; i < k.length; i++) if (k[i] !== "default") __createBinding(result, mod, k[i]);
        __setModuleDefault(result, mod);
        return result;
    };
})();
Object.defineProperty(exports, "__esModule", { value: true });
exports.generateStoriesScript = generateStoriesScript;
const node_path_1 = require("node:path");
const list_stories_1 = require("./list-stories");
async function generateStoriesScript(options) {
    // First we need to get an array of stories and their absolute paths.
    const stories = await (0, list_stories_1.listStories)(options);
    // We can then call toImportFn to create a function that can be used to load each story dynamically.
    return await toImportFn(stories);
}
/**
 * This function takes an array of stories and creates a mapping between the stories' relative paths
 * to the working directory and their dynamic imports. The import is done in an asynchronous
 * function to delay loading and to allow rollup to split the code into smaller chunks. It then
 * creates a function, `importFn(path)`, which resolves a path to an import function and this is
 * called by Storybook to fetch a story dynamically when needed.
 *
 * @param stories An array of absolute story paths.
 */
async function toImportFn(stories) {
    const slash = (await Promise.resolve().then(() => __importStar(require('slash')))).default; // for CJS compatibility
    const objectEntries = stories.map(file => {
        const relativePath = slash((0, node_path_1.relative)(process.cwd(), file));
        const importPath = toImportPath(relativePath);
        let actualPath = file;
        if (actualPath.endsWith('.mdx')) {
            actualPath = `${actualPath}.js`;
        }
        return `  '${importPath}': () => import('${actualPath}')`;
    });
    return `
const importers = {
${objectEntries.join(',\n')}
};

export function importFn(path) {
  return importers[path]();
}
  `.trim();
}
/**
 * Paths get passed either with no leading './' - e.g. `src/Foo.stories.js`,
 * or with a leading `../` (etc), e.g. `../src/Foo.stories.js`.
 * We want to deal in importPaths relative to the working dir, so we normalize
 */
function toImportPath(relativePath) {
    return relativePath.startsWith('../') ? relativePath : `./${relativePath}`;
}
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