Squash Odysseus development history

static/js/chatStreamErrors.js

@@ -0,0 +1,23 @@
+/** Build a terminal stream error while preserving provider-supplied text. */
+export function createTerminalStreamError(payload = {}) {
+  const rawError = payload.error;
+  const message = (
+    payload.text
+    || (typeof rawError === 'string' ? rawError : rawError?.message)
+    || `Error ${payload.status || 'unknown'}`
+  );
+  const error = new Error(message);
+  error.name = 'TerminalStreamError';
+  error.terminalStreamError = true;
+  error.status = payload.status;
+  return error;
+}
+
+/** Only connection-class stream failures are safe to resubmit automatically. */
+export function isRecoverableStreamError(error) {
+  if (!error || error.terminalStreamError || error.name === 'TerminalStreamError') return false;
+  if (error.name === 'TypeError') return true;
+  const message = (error.message || '').toLowerCase();
+  if (/\btool\b|unsupported|json|parse|\b4\d\d\b|\b5\d\d\b/.test(message)) return false;
+  return /network|fetch|connection|reset|closed|aborted|stream|tim(?:e|ed)\s?out|econn|eof/.test(message);
+}