feat: add script to build package.json exports list

scripts/exports/build-exports-list.ts

@@ -0,0 +1,64 @@
+import {readdirSync, readFileSync, writeFileSync} from 'node:fs';
+import path, {dirname} from 'node:path';
+import {fileURLToPath} from 'node:url';
+import {COMPONENT_CUSTOM_ELEMENTS} from '../component-custom-elements.js';
+
+const __filename = fileURLToPath(import.meta.url);
+const __dirname = dirname(__filename);
+
+let exports: {[path: string]: {import: string; types: string}} = {
+  './all.js': {
+    import: './all.js',
+    types: './all.d.ts',
+  },
+};
+
+Object.keys(COMPONENT_CUSTOM_ELEMENTS).forEach((component) => {
+  let paths: string[] = [];
+  paths.push(
+    ...COMPONENT_CUSTOM_ELEMENTS[
+      component as keyof typeof COMPONENT_CUSTOM_ELEMENTS
+    ],
+  );
+
+  // add internals to the list of paths.
+  const componentDirname = component.toLocaleLowerCase();
+  const internalDir = path.resolve(
+    `${__dirname}/../../${componentDirname}/internal/`,
+  );
+  try {
+    const internals = readdirSync(internalDir, {withFileTypes: true})
+      .filter(
+        (f) =>
+          f.isFile() &&
+          f.name.endsWith('.ts') &&
+          !f.name.endsWith('.d.ts') &&
+          !f.name.includes('_test') &&
+          !f.name.includes('-styles'),
+      )
+      .map((f) => path.join(componentDirname, 'internal', f.name));
+
+    paths.push(...internals);
+  } catch {
+    // no internal directory → ignore
+  }
+
+  paths.forEach((filepath) => {
+    filepath = filepath.replace(/\.ts$/, '');
+    exports[`./${filepath}.js`] = {
+      import: `./${filepath}.js`,
+      types: `./${filepath}.d.ts`,
+    };
+  });
+});
+
+const packageJson = JSON.parse(
+  readFileSync(path.resolve(__dirname, '../../package.json')).toString(),
+);
+
+packageJson.exports = exports;
+
+writeFileSync(
+  path.resolve(__dirname, '../../package.json'),
+  JSON.stringify(packageJson, null, 2) + '\n',
+);