31 lines
974 B
JavaScript
31 lines
974 B
JavaScript
import { createLink } from './link';
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import { ApolloClient, InMemoryCache } from '@apollo/client';
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import { isServer } from 'tools/common';
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/** @type {import('@apollo/client').ApolloClient<import('@apollo/client').NormalizedCacheObject>} */
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let apolloClient;
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function createApolloClient(headers) {
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return new ApolloClient({
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cache: new InMemoryCache(),
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link: createLink(headers),
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ssrMode: isServer(),
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});
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}
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export default function initializeApollo(initialState, headers) {
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const _apolloClient = apolloClient ?? createApolloClient(headers);
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// If your page has Next.js data fetching methods that use Apollo Client, the initial state
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// gets hydrated here
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if (initialState) {
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_apolloClient.cache.restore(initialState);
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}
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// For SSG and SSR always create a new Apollo Client
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if (isServer()) return _apolloClient;
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// Create the Apollo Client once in the client
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if (!apolloClient) apolloClient = _apolloClient;
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return _apolloClient;
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}
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