Function fetchText

packages/cli/src/commands/start.test.ts:413–436

(
  port: number,
  path: string,
)

const TEST_HOST = '127.0.0.1';

function fetchText(
  port: number,
  path: string,
): Promise<{
  status: number;
  body: string;
  headers: Record<string, string | string[] | undefined>;
}> {
  return new Promise((resolveFetch, reject) => {
    const req = httpRequest({ hostname: '127.0.0.1', port, path, method: 'GET' }, (res) => {
      let body = '';
      res.setEncoding('utf-8');
      res.on('data', (chunk) => {
        body += chunk;
      });
      res.on('end', () => {
        resolveFetch({ status: res.statusCode ?? 0, body, headers: res.headers });
      });
      res.on('error', reject);
    });
    req.on('error', reject);
    req.end();
  });
}

describe('resolveCollabPort (collab vs UI-sibling port suppression)', () => {
  test('explicit --port always wins', () => {