feat: text & slider animations

.storybook/main.ts

@@ -2,6 +2,26 @@ import type { StorybookConfig } from 'storybook-react-rsbuild';
 
 /* Dev-only playground. Never shipped — package `files` is ["dist"]. */
 const config: StorybookConfig = {
+  rsbuildFinal: (config) => {
+    config.tools ??= {};
+    // Append our rule without clobbering storybook-react-rsbuild's own
+    // tools.rspack hook (it injects the storybook-config-entry virtual module
+    // in build mode). Mutate in place and return nothing so its config stays.
+    const prev = config.tools.rspack;
+    config.tools.rspack = [
+      ...(Array.isArray(prev) ? prev : prev ? [prev] : []),
+      (rspackConfig) => {
+        rspackConfig.module ??= {};
+        rspackConfig.module.rules ??= [];
+        (rspackConfig.module.rules as unknown[]).push({
+          test: /\.mjs$/,
+          type: 'javascript/auto',
+          resolve: { fullySpecified: false },
+        });
+      },
+    ];
+    return config;
+  },
   stories: ['../src/**/*.mdx', '../src/**/*.stories.@(ts|tsx)'],
   addons: ['@storybook/addon-docs'],
   staticDirs: ['../src/assets'],