@graphql-yoga/plugin-response-cache/esm/index.js

For the documentation check `http://graphql-yoga.com/docs/response-cache`

import { createInMemoryCache, defaultBuildResponseCacheKey, useResponseCache as useEnvelopResponseCache, } from '@envelop/response-cache';
const operationIdByRequest = new WeakMap();
// We trick Envelop plugin by passing operationId as sessionId so we can take it from cache key builder we pass to Envelop
function sessionFactoryForEnvelop({ request }) {
    return operationIdByRequest.get(request);
}
export function useResponseCache(options) {
    const buildResponseCacheKey = options?.buildResponseCacheKey || defaultBuildResponseCacheKey;
    const cache = options.cache ?? createInMemoryCache();
    const enabled = options.enabled ?? (() => true);
    return {
        onPluginInit({ addPlugin }) {
            addPlugin(useEnvelopResponseCache({
                ...options,
                cache,
                session: sessionFactoryForEnvelop,
            }));
        },
        async onParams({ params, request, setResult }) {
            if (enabled(request)) {
                const operationId = await buildResponseCacheKey({
                    documentString: params.query,
                    variableValues: params.variables,
                    operationName: params.operationName,
                    sessionId: await options.session(request),
                });
                const cachedResponse = await cache.get(operationId);
                if (cachedResponse) {
                    if (options.includeExtensionMetadata) {
                        setResult({
                            ...cachedResponse,
                            extensions: {
                                responseCache: {
                                    hit: true,
                                },
                            },
                        });
                    }
                    else {
                        setResult(cachedResponse);
                    }
                    return;
                }
                operationIdByRequest.set(request, operationId);
            }
        },
    };
}
export { createInMemoryCache };