```js
// MyComponent.stories.js

import MyComponent from './MyComponent.svelte';

export default {
  /* 👇 The title prop is optional.
   * See https://storybook.js.org/docs/7.0/svelte/configure/overview#configure-story-loading
   * to learn how to generate automatic titles
   */
  title: 'MyComponent',
  component: MyComponent,
};

const getCaptionForLocale = (locale) => {
  switch (locale) {
    case 'es':
      return 'Hola!';
    case 'fr':
      return 'Bonjour!';
    case 'kr':
      return '안녕하세요!';
    case 'zh':
      return '你好!';
    default:
      return 'Hello!';
  }
};

/*
 *👇 Render functions are a framework specific feature to allow you control on how the component renders.
 * See https://storybook.js.org/docs/7.0/svelte/api/csf
 * to learn how to use render functions.
 */
export const StoryWithLocale = {
  render: (args, { globals: { locale } }) => {
    const caption = getCaptionForLocale(locale);
    return {
      component: MyComponent,
      props: {
        locale: caption,
      },
    };
  },
};
```