Function onError

packages/dva-core/src/index.js:175–185

(err, extension)

  function start() {
    // Global error handler
    const onError = (err, extension) => {
      if (err) {
        if (typeof err === 'string') err = new Error(err);
        err.preventDefault = () => {
          err._dontReject = true;
        };
        plugin.apply('onError', err => {
          throw new Error(err.stack || err);
        })(err, app._store.dispatch, extension);
      }
    };

    const sagaMiddleware = createSagaMiddleware();
    const promiseMiddleware = createPromiseMiddleware(app);