When developing, if you would like to see live changes in Storybook.
Instead of
```js
import { xxx } from '@superset-ui/plugin-chart-horizon';
```
which will point to the transpiled code.
Do refer to `src`
```js
import { xxx } from '@superset-ui/plugin-chart-horizon/src'
```
Then after you are satisfied with all the changes, `yarn build` the entire project and remove `/src` from the `import` statement and check Storybook again. This rarely happens, but the minification sometimes can cause issue and you may see different results ranging from crashing to different behavior.