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import { safeParse } from ".";
const globePathSVG =
"M128,24h0A104,104,0,1,0,232,128,104.12,104.12,0,0,0,128,24Zm88,104a87.61,87.61,0,0,1-3.33,24H174.16a157.44,157.44,0,0,0,0-48h38.51A87.61,87.61,0,0,1,216,128ZM102,168H154a115.11,115.11,0,0,1-26,45A115.27,115.27,0,0,1,102,168Zm-3.9-16a140.84,140.84,0,0,1,0-48h59.88a140.84,140.84,0,0,1,0,48ZM40,128a87.61,87.61,0,0,1,3.33-24H81.84a157.44,157.44,0,0,0,0,48H43.33A87.61,87.61,0,0,1,40,128ZM154,88H102a115.11,115.11,0,0,1,26-45A115.27,115.27,0,0,1,154,88Zm52.33,0H170.71a135.28,135.28,0,0,0-22.3-45.6A88.29,88.29,0,0,1,206.37,88ZM107.59,42.4A135.28,135.28,0,0,0,85.29,88H49.63A88.29,88.29,0,0,1,107.59,42.4ZM49.63,168H85.29a135.28,135.28,0,0,0,22.3,45.6A88.29,88.29,0,0,1,49.63,168Zm98.78,45.6a135.28,135.28,0,0,0,22.3-45.6h35.66A88.29,88.29,0,0,1,148.41,213.6Z";
export const handlerCallback = (error: any) => {
const versionEl = document.head.querySelector('meta[name="script-version"]');
const version = versionEl?.getAttribute("content") ?? "";
if (
process.env.VITE_ENVIRONMENT === "local.development" ||
process.env.VITE_ENVIRONMENT === "local.staging"
) {
return;
}
// Filter out XMLHttpRequest errors that occur during page navigation/redirect
// These are expected when XHR requests are aborted due to navigation (e.g., redirecting to login on 401)
if (isXHRAbortError(error)) {
console.debug("Ignoring aborted XHR request during navigation:", error);
return;
}
// Filter out OperationError - native browser error from IndexedDB/Cache API
// that occurs when storage is unavailable or corrupted. These are non-recoverable
// browser-level errors that don't indicate application bugs.
if (isOperationError(error)) {
console.debug("Ignoring OperationError (browser storage error):", error);
return;
}
// Filter out fetch AbortError "signal is aborted without reason", which commonly occurs
// when pdf.js or other consumers cancel in-flight fetches during navigation or re-render.
if (isAbortSignalError(error)) {
error.preventDefault?.();
console.debug("Ignoring aborted fetch signal error:", error);
return;
}
if (isChunkLoadError(error)) {
// Prevent Sentry from logging this as unhandled
error.preventDefault();
fetch(`${process.env.VITE_ASSETS_CDN_HOST}/ui/version.json`, {
headers: {
"Cache-Control": "no-cache, no-store, must-revalidate",
Pragma: "no-cache", //For older browsers
},
})
.then((res) => res.text())
.then((text) => {
const data = safeParse<{ version: string }>(text);
const cdnVersion = data?.version;
if (version !== cdnVersion && cdnVersion) {
buildFallbackError();
}
})
.catch((err) => {
console.log("Failed to fetch version.json:", err);
buildFallbackError({
customTitle: "Technical Difficulties",
customBody:
"There seems to be a temporary network issue. We're working on resolving it.",
customSvg: {
viewBox: "0 0 256 256",
svgPath: globePathSVG,
},
});
});
} else {
console.log(error);
}
// Filter out network/XHR failures on mobile Safari or transient connectivity issues.
// These errors are often caused by aborted requests or temporary network drops,
// and are not actionable
if (isNetworkXHRFailure(error)) {
error.preventDefault?.();
console.debug("Ignoring mobile network/XHR failure:", error);
return;
}
// Filter out "Tab not found" errors from extensions
if (isTabNotFoundError(error)) {
console.debug("Ignoring browser extension 'Tab not found' error:", error);
return;
}
// Filter out Flagsmith internal errors:
// - "feature named `performanceMetrics` was not found"
// - "feature named `pageObserver` was not found"
if (
error.reason?.message?.includes("performanceMetrics") ||
error.reason?.message?.includes("pageObserver")
) {
console.warn("Suppressed Flagsmith feature error:", error.reason);
error.preventDefault?.(); // Prevent Sentry from capturing this
return;
}
// Browser extensions such as (Privacy Badger, Ghostery, anti-fingerprinting tools)
// inject scripts that can interfere with our application code, causing spurious
// promise rejections that appear in Sentry, we're filtering out these extension-specific errors to prevent false positives
// in our error monitoring. These are not bugs in our code and cannot be fixed
// on the frontend
if (
error.reason &&
typeof error.reason === "string" &&
error.reason.includes("Object Not Found Matching Id")
) {
error.preventDefault?.();
console.debug("Ignoring Object Not Found failure:", error);
return;
}
};
const chunkLoadErrorMessageRegex =
/Failed to fetch dynamically imported module|error loading dynamically imported module|importing a module script failed/i;
function isChunkLoadError(error: ErrorEvent | Error): boolean {
if (!error) {
return false;
}
let actualError = null;
let errorMessage = "";
if (error instanceof ErrorEvent) {
errorMessage = error.message || "";
actualError = error.error;
} else if (error instanceof Error) {
actualError = error;
errorMessage = error.message || "";
} else if (
error &&
typeof error === "object" &&
typeof (error as any).message === "string"
) {
errorMessage = (error as any).message;
} else {
return false;
}
const hasMatchingMessage = chunkLoadErrorMessageRegex.test(errorMessage);
// Also check the nested error's message directly if available, as it might be more specific
const hasMatchingNestedMessage =
actualError &&
typeof actualError.message === "string" &&
chunkLoadErrorMessageRegex.test(actualError.message);
// We primarily rely on the message pattern.
// The TypeError check adds confidence but might be too strict if browser behaviour changes.
// Let's return true if any of the relevant messages match the pattern.
if (hasMatchingMessage || hasMatchingNestedMessage) {
return true;
}
return false;
}
/**
* Checks if an error is related to an aborted XMLHttpRequest during navigation.
* IMPORTANT: This is conservative - we only return true when we're confident it's a navigation-related
* abort, NOT a genuine network error that could impact user experience.
*/
function isXHRAbortError(error: any): boolean {
if (!error) {
return false;
}
// Only filter if we're on the login page (indicating a redirect happened)
const isOnLoginPage = window.location.pathname === "/login";
if (!isOnLoginPage) {
return false; // Don't filter errors during normal app usage
}
if (error.type === "unhandledrejection" && error.reason) {
const reason = error.reason;
// Check if it's an XMLHttpRequestProgressEvent with error type
if (
reason?.constructor?.name === "XMLHttpRequestProgressEvent" &&
reason?.type === "error" &&
typeof reason === "object" &&
reason.target?.constructor?.name === "XMLHttpRequest"
) {
// Additional check: the XHR should have readyState indicating abort (0 or 4)
// and status 0 (aborted before completion)
const xhr = reason.target;
if (xhr && (xhr.readyState === 0 || xhr.status === 0)) {
return true; // Confirmed: aborted XHR during navigation
}
}
}
return false;
}
/**
* Checks if an error is an OperationError from IndexedDB/Cache API operations.
* OperationError is a native browser error that occurs when storage operations fail
* in a non-recoverable way (e.g., database corrupted, storage quota exceeded, etc.).
* These are browser-level errors that don't indicate application bugs.
*/
function isOperationError(error: any): boolean {
if (!error) {
return false;
}
// Check for OperationError in unhandled rejection events
if (error.type === "unhandledrejection" && error.reason) {
const reason = error.reason;
// Check if it's an OperationError by name or message
if (
reason?.name === "OperationError" ||
reason?.constructor?.name === "OperationError" ||
(reason?.message &&
typeof reason.message === "string" &&
(reason.message.includes("OperationError") ||
(reason.message.includes("Non-recoverable error") &&
reason.message.includes("Do not retry"))))
) {
return true;
}
}
// Check for OperationError in regular error events
if (error.error) {
const actualError = error.error;
if (
actualError?.name === "OperationError" ||
actualError?.constructor?.name === "OperationError" ||
(actualError?.message &&
typeof actualError.message === "string" &&
(actualError.message.includes("OperationError") ||
(actualError.message.includes("Non-recoverable error") &&
actualError.message.includes("Do not retry"))))
) {
return true;
}
}
// Check error message directly
if (error.message && typeof error.message === "string") {
if (
error.message.includes("OperationError") ||
(error.message.includes("Non-recoverable error") &&
error.message.includes("Do not retry"))
) {
return true;
}
}
return false;
}
function isNetworkXHRFailure(event: any): boolean {
// unhandled promise rejection with XHR error
if (event?.type === "unhandledrejection" && event?.reason) {
const reason = event.reason;
// Axios network error
if (reason?.isAxiosError && reason.message === "Network Error") {
return true;
}
// Safari XHR ProgressEvent surfaced as rejection
if (
reason?.constructor?.name === "XMLHttpRequestProgressEvent" ||
reason?.type === "error"
) {
return true;
}
}
return false;
}
function isTabNotFoundError(error: any): boolean {
if (!error) return false;
// Check the message of the error or nested error.reason
const errorMessage =
error?.message || error?.reason?.message || error?.error?.message || "";
// Mobile Safari / Chrome extension runtime sendMessage tab not found
return /Invalid call to runtime\.sendMessage\(\)\. Tab not found/i.test(
errorMessage,
);
}
function isAbortSignalError(event: any): boolean {
if (!event) return false;
// Handle unhandledrejection events where the reason is an AbortError
if (event.type === "unhandledrejection" && event.reason) {
const reason = event.reason;
if (
(reason.name === "AbortError" ||
reason.constructor?.name === "AbortError") &&
typeof reason.message === "string" &&
reason.message.includes("signal is aborted without reason")
) {
return true;
}
}
// Fallback: direct AbortError instance
if (
event.name === "AbortError" &&
typeof event.message === "string" &&
event.message.includes("signal is aborted without reason")
) {
return true;
}
return false;
}
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