Markdium-VSCode extension inside a nx workspace

Markdium-typescript.ts

import { promises as fs } from 'fs'; // Require @types/node@latest
import { join } from 'path';

// On activation
export function activate(context: ExtensionContext) {
  // Register command "start" 
  commands.registerCommand('start', async () => {
    ...
    const indexPath = join(context.extensionPath, 'studio/index.html');
    const html = await fs.readFile(indexPath, 'utf-8');
    panel.webview.html = html;
    ...
  })
}