Brummer MCP Server

// JavaScript file with common runtime errors for React projects // Console error scenarios console.log('Starting error scenario tests...'); // 1. Reference Errors try { console.log(undefinedVariable); } catch (error) { console.error('ReferenceError caught:', error.message); } // 2. Type Errors try { const nullVar = null; nullVar.someMethod(); } catch (error) { console.error('TypeError caught:', error.message); } // 3. Syntax Errors (this would prevent script from running) // eval('function test() { console.log("missing closing brace"'); // 4. Network Errors fetch('https://nonexistent-domain.invalid/api/data') .then(response => response.json()) .catch(error => { console.error('Network Error:', error.message); }); // 5. JSON Parse Errors try { JSON.parse('{invalid json}'); } catch (error) { console.error('JSON Parse Error:', error.message); } // 6. Promise Rejection Promise.reject(new Error('Promise rejection test')) .catch(error => { console.error('Promise Rejection:', error.message); }); // 7. Async/Await Errors async function asyncErrorTest() { try { const response = await fetch('https://invalid-api.nonexistent'); const data = await response.json(); return data; } catch (error) { console.error('Async Error:', error.message); throw error; } } asyncErrorTest().catch(error => { console.error('Unhandled async error:', error.message); }); // 8. DOM Errors try { document.getElementById('nonexistent').innerHTML = 'test'; } catch (error) { console.error('DOM Error:', error.message); } // 9. Local Storage Errors (in some environments) try { localStorage.setItem('test', 'value'); } catch (error) { console.error('Storage Error:', error.message); } // 10. Module Import Errors (would show in webpack/build output) // import('./nonexistent-module').catch(error => { // console.error('Dynamic Import Error:', error.message); // }); console.log('Error scenario tests completed.');