demo

web-components/.storybook/main.js

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+
+
+/** @type { import('@storybook/web-components-vite').StorybookConfig } */
+const config = {
+  "stories": [
+    "../stories/**/*.stories.@(js|jsx|mjs|ts|tsx)"
+  ],
+  "addons": [],
+  "framework": {
+    "name": "@storybook/web-components-vite",
+    "options": {}
+  }
+};
+export default config;

web-components/.storybook/preview.js

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+/** @type { import('@storybook/web-components-vite').Preview } */
+const preview = {
+  parameters: {
+    controls: {
+      matchers: {
+       color: /(background|color)$/i,
+       date: /Date$/i,
+      },
+    },
+  },
+};
+
+export default preview;