无需争论就可以解决问题

similar question was asked before 但这并不能完全回答我想理解的问题。

mobx-state-router tutorial

{
    name: 'department',
    pattern: '/departments/:id',
    onEnter: (fromState, toState, routerStore) => {
        const { rootStore: { itemStore } } = routerStore;
        itemStore.loadDepartmentItems(toState.params.id);
        return Promise.resolve();
    }
},

Promise.resolve()