I need to set my Apollo Client Cache to its defaults - reactjs

Question

I have a React app which is using Apollo Client. I'm using apollo-link-state and apollo-cache-persist and need to reset my store to its default values when client.resetStore() is called in my app.
The docs say that when creating a client you should call client.onResetStore(stateLink.writeDefaults) and this will do the job but writeDefaults is exposed by Apollo Link State which i don't have direct access to as I’m using Apollo Boost.
Here is my Apollo Client code:
import ApolloClient from 'apollo-boost';
import { InMemoryCache } from 'apollo-cache-inmemory';
import { persistCache } from 'apollo-cache-persist';
import { defaults, resolvers } from "./store";
const cache = new InMemoryCache();
persistCache({
storage: window.localStorage,
debug: process.env.NODE_ENV !== 'production',
cache
});
const client = new ApolloClient({
uri: process.env.NODE_ENV === 'production' ? 'https://five-yards-api.herokuapp.com/graphql' : 'http://localhost:7777/graphql',
credentials: 'include',
clientState: {
defaults,
resolvers
},
cache
});
// TODO: Doesn't work as expected
client.onResetStore(client.writeDefaults);
export default client;

Answer 1

I use Apollo Client 2.x, and Apollo Boost may be the same.
I had the same problem with Apollo Client 2.x, and below was the solution for me.
In the root file where you configure your Apollo (e.g. App.js):
cache.writeData({data : defaultData }); # I assume you already have this to initialise your default data.
# Then, you just add below underneath.
client.onResetStore(() => {
cache.writeData({data : defaultData });
});
const App = () => (...

Answer 2

AFAIK the only way to this is to migrate from Apollo Boost which configures a lot of things under the hood for you and set up Apollo Client manually. After migrating I was able to call onResetStore() as per the docs and everything is working :)
Apollo Boost migration:
https://www.apollographql.com/docs/react/advanced/boost-migration.html