jackwener/OpenCLI · warning · CommandExecutionError

Unexpected nowcoder probe: ${JSON.stringify(probe)}

Error message

Unexpected nowcoder probe: ${JSON.stringify(probe)}

What it means

After checking known probe kinds (auth/http/exception), verifyNowcoderIdentity throws CommandExecutionError 'Unexpected nowcoder probe: <json>' if the probe result is neither {ok:true} nor a recognized kind — e.g. null/undefined probe, a probe missing `ok`, or an unrecognized structure. This is a defensive catch-all indicating the probe contract changed or evaluate returned garbage.

Source

Thrown at clis/nowcoder/auth.js:49

      return { kind: 'auth', detail: 'nowcoder profile returned no user data (anonymous)' };
    }
    return { ok: true, user_id: String(d.data.id), nickname: String(d.data.nickname || '') };
  } catch (e) {
    return { kind: 'exception', detail: String(e && e.message || e) };
  }
})()`;

async function verifyNowcoderIdentity(page) {
  if (!await hasNowcoderSessionCookie(page)) {
    throw new AuthRequiredError('nowcoder.com', 'Nowcoder t cookie missing (anonymous)');
  }
  await page.goto('https://www.nowcoder.com/');
  await page.wait(2);
  const probe = await page.evaluate(WHOAMI_PROBE);
  if (probe?.kind === 'auth') throw new AuthRequiredError('nowcoder.com', probe.detail);
  if (probe?.kind === 'http') throw new CommandExecutionError(`HTTP ${probe.httpStatus} from nowcoder profile API`);
  if (probe?.kind === 'exception') throw new CommandExecutionError(`Nowcoder whoami failed: ${probe.detail}`);
  if (!probe?.ok) throw new CommandExecutionError(`Unexpected nowcoder probe: ${JSON.stringify(probe)}`);
  return { user_id: probe.user_id, nickname: probe.nickname };
}

registerSiteAuthCommands({
  site: 'nowcoder',
  domain: 'nowcoder.com',
  loginUrl: 'https://www.nowcoder.com/login',
  columns: ['user_id', 'nickname'],
  verify: verifyNowcoderIdentity,
  poll: async (page) => {
    if (!await hasNowcoderSessionCookie(page)) {
      throw new AuthRequiredError('nowcoder.com', 'Waiting for Nowcoder login');
    }
    return verifyNowcoderIdentity(page);
  },
});

View on GitHub (pinned to 49907e53dc)

Solutions

1. Inspect the JSON in the message to see what the probe actually returned
2. Ensure page.evaluate is executing WHOAMI_PROBE (a fully loaded nowcoder.com page)
3. Sync WHOAMI_PROBE and verifyNowcoderIdentity so success always includes ok:true, user_id, nickname
4. Update library/browser if evaluate serialization behavior changed

Example fix

// before
const probe = await page.evaluate(WHOAMI_PROBE);
if (probe?.kind === 'auth') throw new AuthRequiredError('nowcoder.com', probe.detail);
// after
const probe = await page.evaluate(WHOAMI_PROBE);
if (!probe || typeof probe !== 'object') {
  throw new CommandExecutionError(`Unexpected nowcoder probe: ${JSON.stringify(probe)}`);
}
if (probe?.kind === 'auth') throw new AuthRequiredError('nowcoder.com', probe.detail);

const probe = await page.evaluate(WHOAMI_PROBE);
if (!probe || typeof probe !== 'object') {
  throw new CommandExecutionError(`Unexpected nowcoder probe: ${JSON.stringify(probe)}`);
}

function isValidProbe(p) {
  return !!p && typeof p === 'object' &&
    (p.ok === true || ['auth','http','exception'].includes(p.kind));
}

try {
  return await verifyNowcoderIdentity(page);
} catch (e) {
  if (/Unexpected nowcoder probe: null|undefined/.test(e.message)) {
    // evaluate returned nothing — reload page and retry
    await page.goto('https://www.nowcoder.com/');
    return verifyNowcoderIdentity(page);
  }
  throw e;
}

When it happens

Trigger: page.evaluate returning null (script failed to return), an older browser serializing differently, WHOAMI_PROBE edited so the success path lost {ok:true}, or navigation to an error page returning an unexpected object.

Common situations: Library version mismatch between probe script and verifier; headless browser quirks returning undefined from evaluate; DOM so broken the probe returned a shape the verifier doesn't know.

Related errors

• Nowcoder whoami failed: ${probe.detail}
• Unexpected Boss probe: ${JSON.stringify(probe)}
• ${label}: ${String(payload.error)}
• ${label} returned malformed extraction payload
• coupang add-to-cart evaluation failed: ${error?.message || e

AI-assisted analysis of jackwener/OpenCLI@49907e53dc (2026-08-29). Data as JSON: /api/errors/02f858c6a16adf65. Report an issue: GitHub.