jackwener/OpenCLI · error · CommandExecutionError

wikipedia page request failed: ${error?.message || error}

Error message

wikipedia page request failed: ${error?.message || error}

What it means

fetch() throws on network-level failures (DNS, TCP, TLS, aborts), and page.js wraps that in a CommandExecutionError prefixed 'wikipedia page request failed:'. This fires before any HTTP status is examined — the request never completed.

Source

Thrown at clis/wikipedia/page.js:60

        url.searchParams.set('action', 'query');
        url.searchParams.set('format', 'json');
        url.searchParams.set('formatversion', '2');
        url.searchParams.set('prop', 'extracts|info|description');
        url.searchParams.set('inprop', 'url');
        url.searchParams.set('explaintext', '1');
        url.searchParams.set('redirects', '1');
        url.searchParams.set('titles', title);

        let resp;
        try {
            resp = await fetch(url, {
                headers: {
                    'User-Agent': 'opencli/1.0 (+https://github.com/jackwener/opencli)',
                    'Accept': 'application/json',
                },
            });
        } catch (error) {
            throw new CommandExecutionError(`wikipedia page request failed: ${error?.message || error}`);
        }
        if (!resp.ok) {
            throw new CommandExecutionError(`wikipedia page failed: HTTP ${resp.status}`);
        }
        let data;
        try {
            data = await resp.json();
        } catch (error) {
            throw new CommandExecutionError(`wikipedia returned malformed JSON: ${error?.message || error}`);
        }
        if (data?.error) {
            throw new CommandExecutionError(`wikipedia API error: ${data.error.info || data.error.code}`);
        }
        const pages = Array.isArray(data?.query?.pages) ? data.query.pages : [];
        const page = pages[0];
        if (!page || page.missing) {
            throw new EmptyResultError('wikipedia page', `No article "${title}" on ${lang}.wikipedia.org. Try \`opencli wikipedia search\` first.`);
        }

View on GitHub (pinned to 49907e53dc)

Solutions

1. Check network connectivity and DNS resolution of en.wikipedia.org
2. Fix the lang value so the hostname is a real Wikipedia subdomain
3. Verify proxy/firewall allows HTTPS to wikipedia.org and set HTTPS_PROXY if needed
4. Upgrade to Node 18+ (or a runtime with global fetch) if fetch is undefined

Example fix

// before
await run(['wikipedia', 'page', title, '--lang', 'english']); // bad hostname, DNS fails
// after
await run(['wikipedia', 'page', title, '--lang', 'en']);

// pre-flight reachability check
const online = await fetch('https://en.wikipedia.org/w/api.php?action=query&format=json', { method: 'HEAD' }).then(r => r.ok).catch(() => false);
if (!online) throw new Error('wikipedia.org unreachable from this network');

try {
  return await pageCommand(args);
} catch (err) {
  if (err instanceof CommandExecutionError && err.message.includes('request failed')) {
    console.error('network problem reaching wikipedia.org — check connectivity/proxy/DNS');
    return null;
  }
  throw err;
}

When it happens

Trigger: No internet connection or DNS failure resolving <lang>.wikipedia.org; TLS interception/firewall blocking the request; a typo'd lang creating an invalid hostname that fails DNS; Node < 18 where global fetch is undefined (TypeError caught here).

Common situations: Offline development or CI without network egress; corporate proxies rejecting the request; using an invalid lang that produces a nonexistent subdomain; running on an old runtime without fetch.

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AI-assisted analysis of jackwener/OpenCLI@49907e53dc (2026-08-29). Data as JSON: /api/errors/b44d780a54671bb3. Report an issue: GitHub.