docs/snippets/common/storybook-main-with-mock-decorator.js.mdx
```js
// .storybook/main.js
module.exports = {
// Your Storybook configuration
webpackFinal: async (config) => {
config.resolve.alias['isomorphic-fetch'] = require.resolve('../__mocks__/isomorphic-fetch.js');
return config;
},
};
```