Bare TypeScript code in `@example` is interpreted as Markdown/HTML

[tats-u]

Steps to reproduce

/**
 * @example
 * <Ruby text="ほっけ">𩸽</Ruby>
 * <Ruby text="ビャンビャン">𰻞𰻞</Ruby>麺
 */
export const Ruby = ({ children, text }: { children: string; text: string }) => (
  <ruby>
    {children}
    <rp>（</rp>
    <rt>{text}</rt>
    <rp>）</rp>
  </ruby>
);

1. The above file is .tsx file
2. Set typescript.experimental.useTsgo to true in settings.json
3. See the description of Ruby by holding your mouse pointer on "Ruby"
4. See how @example is rendered

Note: this occurs even in non-JSX .ts files (e.g. tokens are not highlighted or newlines are removed), but is not as critical as in .tsx files.

Behavior with typescript@5.9

Interpreted as TS code:

insiders.vscode.dev

Behavior with tsgo

Interpreted as Markdown/HTML:

Workaround: wrap it with ```tsx–````

This also works in Strada:

To fix (Strada probably adopts this method):

1. Find a code block marker (```)
2. If exists, treat the content as Markdown
3. If missing, treat the content as TypeScript code