storybook/docs/snippets/web-components/my-component-play-function-composition.ts.mdx

```ts
// MyComponent.stories.ts

import { userEvent, within } from '@storybook/testing-library';

import type { Meta, StoryObj } from '@storybook/web-components';

const meta: Meta = {
  title: 'MyComponent',
  component: 'demo-my-component',
};
export default meta;

type Story = StoryObj;

/*
 * See https://storybook.js.org/docs/7.0/web-components/writing-stories/play-function#working-with-the-canvas
 * to learn more about using the canvasElement to query the DOM
 */
export const FirstStory: Story = {
  play: async ({ canvasElement }) => {
    const canvas = within(canvasElement);

    userEvent.type(canvas.getByTestId('an-element'), 'example-value');
  },
};

export const SecondStory: Story = {
  play: async ({ canvasElement }) => {
    const canvas = within(canvasElement);

    await userEvent.type(canvas.getByTestId('other-element'), 'another value');
  },
};

export const CombinedStories: Story = {
  play: async ({ canvasElement }) => {
    const canvas = within(canvasElement);

    // Runs the FirstStory and Second story play function before running this story's play function
    await FirstStory.play({ canvasElement });
    await SecondStory.play({ canvasElement });
    await userEvent.type(canvas.getByTestId('another-element'), 'random value');
  },
};
```