@tanstack/router-core/dist/esm/stores.js

Modern and scalable routing for React applications

import { arraysEqual, functionalUpdate } from "./utils.js";
//#region src/stores.ts
/** SSR non-reactive createMutableStore */
function createNonReactiveMutableStore(initialValue) {
	let value = initialValue;
	return {
		get() {
			return value;
		},
		set(nextOrUpdater) {
			value = functionalUpdate(nextOrUpdater, value);
		}
	};
}
/** SSR non-reactive createReadonlyStore */
function createNonReactiveReadonlyStore(read) {
	return { get() {
		return read();
	} };
}
function createRouterStores(initialLocation, config) {
	const { createMutableStore, createReadonlyStore, batch } = config;
	const byRoute = /* @__PURE__ */ new Map();
	const status = createMutableStore("idle");
	const location = createMutableStore(initialLocation);
	const resolvedLocation = createMutableStore(void 0);
	const ids = createMutableStore([]);
	const matches = createReadonlyStore(() => ids.get().map((id) => byRoute.get(id).get()));
	const __store = createReadonlyStore(() => ({
		status: status.get(),
		isLoading: status.get() === "pending",
		matches: matches.get(),
		location: location.get(),
		resolvedLocation: resolvedLocation.get()
	}));
	function getMatchStore(routeId) {
		let matchStore = byRoute.get(routeId);
		if (!matchStore) {
			matchStore = createMutableStore(void 0);
			byRoute.set(routeId, matchStore);
		}
		return matchStore;
	}
	const store = {
		status,
		location,
		resolvedLocation,
		ids,
		matches,
		byRoute,
		__store,
		getMatchStore,
		setMatches
	};
	function setMatches(nextMatches) {
		const previousIds = ids.get();
		const nextIds = nextMatches.map((match) => match.routeId);
		batch(() => {
			if (!arraysEqual(previousIds, nextIds)) ids.set(nextIds);
			for (const id of previousIds) if (!nextIds.includes(id)) byRoute.get(id).set(() => void 0);
			for (const nextMatch of nextMatches) {
				const matchStore = getMatchStore(nextMatch.routeId);
				if (matchStore.get() !== nextMatch) matchStore.set(nextMatch);
			}
		});
	}
	return store;
}
//#endregion
export { createNonReactiveMutableStore, createNonReactiveReadonlyStore, createRouterStores };

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