49 lines
1.7 KiB
JavaScript
49 lines
1.7 KiB
JavaScript
import React, { useMemo } from 'react';
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import { notifyManager } from '../core/notifyManager';
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import { QueriesObserver } from '../core/queriesObserver';
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import { useQueryClient } from './QueryClientProvider';
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export function useQueries(queries) {
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var mountedRef = React.useRef(false);
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var _React$useState = React.useState(0),
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forceUpdate = _React$useState[1];
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var queryClient = useQueryClient();
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var defaultedQueries = useMemo(function () {
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return queries.map(function (options) {
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var defaultedOptions = queryClient.defaultQueryObserverOptions(options); // Make sure the results are already in fetching state before subscribing or updating options
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defaultedOptions.optimisticResults = true;
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return defaultedOptions;
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});
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}, [queries, queryClient]);
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var _React$useState2 = React.useState(function () {
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return new QueriesObserver(queryClient, defaultedQueries);
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}),
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observer = _React$useState2[0];
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var result = observer.getOptimisticResult(defaultedQueries);
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React.useEffect(function () {
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mountedRef.current = true;
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var unsubscribe = observer.subscribe(notifyManager.batchCalls(function () {
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if (mountedRef.current) {
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forceUpdate(function (x) {
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return x + 1;
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});
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}
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}));
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return function () {
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mountedRef.current = false;
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unsubscribe();
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};
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}, [observer]);
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React.useEffect(function () {
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// Do not notify on updates because of changes in the options because
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// these changes should already be reflected in the optimistic result.
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observer.setQueries(defaultedQueries, {
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listeners: false
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});
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}, [defaultedQueries, observer]);
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return result;
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} |