Function extractMessage

packages/browser/src/eventbuilder.ts:201–221

(ex: Error & { message: { error?: Error } })

 * In this specific case we try to extract stacktrace.message.error.message
 */
export function extractMessage(ex: Error & { message: { error?: Error } }): string {
  const message = ex?.message;

  if (isWebAssemblyException(ex)) {
    // For Node 18, Emscripten sets array[type, message] to the "message" property on the WebAssembly.Exception object
    if (Array.isArray(ex.message) && ex.message.length == 2) {
      return ex.message[1];
    }
    return 'wasm exception';
  }

  if (!message) {
    return 'No error message';
  }

  if (message.error && typeof message.error.message === 'string') {
    return _INTERNAL_enhanceErrorWithSentryInfo(message.error);
  }

  return _INTERNAL_enhanceErrorWithSentryInfo(ex);
}

/**
 * Creates an {@link Event} from all inputs to `captureException` and non-primitive inputs to `captureMessage`.