filter network errors globally in sentry

src/lib/network-error.ts

@@ -0,0 +1,39 @@
+const NETWORK_ERROR_PATTERNS = [
+  /\babort(?:ed|error)?\b/i,
+  /network request failed/i,
+  /failed to fetch/i,
+  /fetch failed/i,
+  /\bload failed\b/i,
+  /upstream service unreachable/i,
+  /networkerror when attempting to fetch resource/i,
+  /internet connection appears to be offline/i,
+  /network connection was lost/i,
+  /unknownhostexception/i,
+  /unable to resolve host/i,
+  /server with the specified hostname could not be found/i,
+  /network request timed out/i,
+  /connectexception: failed to connect/i,
+  /sslhandshakeexception: connection closed/i,
+]
+
+/**
+ * Detects transport failures across the error strings produced by web, native
+ * fetch, and the XRPC clients. Error causes are checked because the XRPC
+ * clients wrap the platform-specific fetch error.
+ */
+export function isNetworkError(value: unknown): boolean {
+  return isNetworkErrorInner(value, new Set())
+}
+
+function isNetworkErrorInner(value: unknown, seen: Set<object>): boolean {
+  if (NETWORK_ERROR_PATTERNS.some(pattern => pattern.test(String(value)))) {
+    return true
+  }
+
+  if (typeof value !== 'object' || value === null || seen.has(value)) {
+    return false
+  }
+
+  seen.add(value)
+  return 'cause' in value && isNetworkErrorInner(value.cause, seen)
+}