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import { useEffect } from 'react';
import { useReportWebVitals } from 'next/web-vitals';
type ClientErrorPayload = {
message: string;
stack?: string;
name?: string;
filename?: string;
lineno?: number;
colno?: number;
};
type MonitoringPayload = {
type: 'web-vital' | 'client-error';
url: string;
timestamp: number;
metric?: Record<string, unknown>;
error?: ClientErrorPayload;
};
const MONITORING_ENDPOINT =
process.env.NEXT_PUBLIC_MONITORING_ENDPOINT || '/api/monitoring';
const isProduction = () => process.env.NODE_ENV === 'production';
const sendPayload = (payload: MonitoringPayload) => {
Iif (!isProduction()) {
return;
}
const body = JSON.stringify(payload);
Eif (typeof navigator !== 'undefined' && navigator.sendBeacon) {
navigator.sendBeacon(MONITORING_ENDPOINT, body);
return;
}
fetch(MONITORING_ENDPOINT, {
method: 'POST',
headers: {
'content-type': 'application/json',
},
body,
keepalive: true,
}).catch(() => {
// Swallow network errors to avoid cascading failures in the client.
});
};
const toErrorPayload = (error: unknown): ClientErrorPayload => {
if (error instanceof Error) {
return {
name: error.name,
message: error.message,
stack: error.stack,
};
}
if (typeof error === 'string') {
return { message: error };
}
return { message: 'Unknown error' };
};
export const ClientMonitoring = () => {
useReportWebVitals((metric) => {
sendPayload({
type: 'web-vital',
url: window.location.href,
timestamp: Date.now(),
metric: {
id: metric.id,
name: metric.name,
value: metric.value,
label: metric.label,
rating: metric.rating,
navigationType: metric.navigationType,
},
});
});
useEffect(() => {
if (!isProduction()) {
return;
}
const handleError = (event: ErrorEvent) => {
sendPayload({
type: 'client-error',
url: window.location.href,
timestamp: Date.now(),
error: {
...toErrorPayload(event.error),
message: event.message,
filename: event.filename,
lineno: event.lineno,
colno: event.colno,
},
});
};
const handleRejection = (event: PromiseRejectionEvent) => {
sendPayload({
type: 'client-error',
url: window.location.href,
timestamp: Date.now(),
error: toErrorPayload(event.reason),
});
};
window.addEventListener('error', handleError);
window.addEventListener('unhandledrejection', handleRejection);
return () => {
window.removeEventListener('error', handleError);
window.removeEventListener('unhandledrejection', handleRejection);
};
}, []);
return null;
};
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