storybook/docs/_snippets/test-runner-a11y-configure.md

```js filename=".storybook/test-runner.js" renderer="common" language="js"
const { injectAxe, checkA11y, configureAxe } = require('axe-playwright');

const { getStoryContext } = require('@storybook/test-runner');

/*
 * See https://storybook.js.org/docs/writing-tests/test-runner#test-hook-api
 * to learn more about the test-runner hooks API.
 */
module.exports = {
  async preVisit(page) {
    await injectAxe(page);
  },
  async postVisit(page, context) {
    // Get the entire context of a story, including parameters, args, argTypes, etc.
    const storyContext = await getStoryContext(page, context);

    // Apply story-level a11y rules
    await configureAxe(page, {
      rules: storyContext.parameters?.a11y?.config?.rules,
    });

    const element = storyContext.parameters?.a11y?.element ?? 'body';
    await checkA11y(page, element, {
      detailedReport: true,
      detailedReportOptions: {
        html: true,
      },
    });
  },
};
```

```ts filename=".storybook/test-runner.ts" renderer="common" language="ts"
import type { TestRunnerConfig } from '@storybook/test-runner';
import { getStoryContext } from '@storybook/test-runner';

import { injectAxe, checkA11y, configureAxe } from 'axe-playwright';

/*
 * See https://storybook.js.org/docs/writing-tests/test-runner#test-hook-api
 * to learn more about the test-runner hooks API.
 */
const config: TestRunnerConfig = {
  async preVisit(page) {
    await injectAxe(page);
  },
  async postVisit(page, context) {
    // Get the entire context of a story, including parameters, args, argTypes, etc.
    const storyContext = await getStoryContext(page, context);

    // Apply story-level a11y rules
    await configureAxe(page, {
      rules: storyContext.parameters?.a11y?.config?.rules,
    });

    const element = storyContext.parameters?.a11y?.element ?? 'body';
    await checkA11y(page, element, {
      detailedReport: true,
      detailedReportOptions: {
        html: true,
      },
    });
  },
};

export default config;
```