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48 lines
2.5 KiB
48 lines
2.5 KiB
4 months ago
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import { __assign, __rest } from "tslib";
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import * as React from "rehackt";
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import { equal } from "@wry/equality";
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import { mergeDeepArray } from "../../utilities/index.js";
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import { useApolloClient } from "./useApolloClient.js";
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import { useSyncExternalStore } from "./useSyncExternalStore.js";
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import { useDeepMemo, useLazyRef } from "./internal/index.js";
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export function useFragment(options) {
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var cache = useApolloClient(options.client).cache;
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var diffOptions = useDeepMemo(function () {
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var fragment = options.fragment, fragmentName = options.fragmentName, from = options.from, _a = options.optimistic, optimistic = _a === void 0 ? true : _a, rest = __rest(options, ["fragment", "fragmentName", "from", "optimistic"]);
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return __assign(__assign({}, rest), { returnPartialData: true, id: typeof from === "string" ? from : cache.identify(from), query: cache["getFragmentDoc"](fragment, fragmentName), optimistic: optimistic });
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}, [options]);
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var resultRef = useLazyRef(function () {
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return diffToResult(cache.diff(diffOptions));
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});
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// Used for both getSnapshot and getServerSnapshot
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var getSnapshot = React.useCallback(function () { return resultRef.current; }, []);
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return useSyncExternalStore(React.useCallback(function (forceUpdate) {
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var lastTimeout = 0;
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var unsubscribe = cache.watch(__assign(__assign({}, diffOptions), { immediate: true, callback: function (diff) {
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if (!equal(diff.result, resultRef.current.data)) {
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resultRef.current = diffToResult(diff);
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// If we get another update before we've re-rendered, bail out of
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// the update and try again. This ensures that the relative timing
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// between useQuery and useFragment stays roughly the same as
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// fixed in https://github.com/apollographql/apollo-client/pull/11083
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clearTimeout(lastTimeout);
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lastTimeout = setTimeout(forceUpdate);
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}
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} }));
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return function () {
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unsubscribe();
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clearTimeout(lastTimeout);
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};
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}, [cache, diffOptions]), getSnapshot, getSnapshot);
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}
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function diffToResult(diff) {
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var result = {
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data: diff.result,
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complete: !!diff.complete,
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};
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if (diff.missing) {
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result.missing = mergeDeepArray(diff.missing.map(function (error) { return error.missing; }));
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}
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return result;
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}
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//# sourceMappingURL=useFragment.js.map
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