Function instrumentError

packages/core/src/instrument/globalError.ts:19–49

()

}

function instrumentError(): void {
  _oldOnErrorHandler = GLOBAL_OBJ.onerror;

  // Note: The reason we are doing window.onerror instead of window.addEventListener('error')
  // is that we are using this handler in the Loader Script, to handle buffered errors consistently
  GLOBAL_OBJ.onerror = function (
    msg: string | object,
    url?: string,
    line?: number,
    column?: number,
    error?: Error,
  ): boolean {
    const handlerData: HandlerDataError = {
      column,
      error,
      line,
      msg,
      url,
    };
    triggerHandlers('error', handlerData);

    if (_oldOnErrorHandler) {
      // eslint-disable-next-line prefer-rest-params
      return _oldOnErrorHandler.apply(this, arguments);
    }

    return false;
  };

  GLOBAL_OBJ.onerror.__SENTRY_INSTRUMENTED__ = true;
}