Function classifyFetchError

src/utils/plugins/fetchTelemetry.ts:108–135

(error: unknown)

 * "timeout" — ordering the other way would misclassify git DNS as timeout.
 */
export function classifyFetchError(error: unknown): string {
  const msg = String((error as { message?: unknown })?.message ?? error)
  if (
    /ENOTFOUND|ECONNREFUSED|EAI_AGAIN|Could not resolve host|Connection refused/i.test(
      msg,
    )
  ) {
    return 'dns_or_refused'
  }
  if (/ETIMEDOUT|timed out|timeout/i.test(msg)) return 'timeout'
  if (
    /ECONNRESET|socket hang up|Connection reset by peer|remote end hung up/i.test(
      msg,
    )
  ) {
    return 'conn_reset'
  }
  if (/403|401|authentication|permission denied/i.test(msg)) return 'auth'
  if (/404|not found|repository not found/i.test(msg)) return 'not_found'
  if (/certificate|SSL|TLS|unable to get local issuer/i.test(msg)) return 'tls'
  // Schema validation throws "Invalid response format" (install_counts) —
  // distinguish from true unknowns so the dashboard can
  // see "server sent garbage" separately.
  if (/Invalid response format|Invalid marketplace schema/i.test(msg)) {
    return 'invalid_schema'
  }
  return 'other'
}