Carlos Florêncio
42 lines
1009 B
TypeScript
42 lines
1009 B
TypeScript
import { useSyncExternalStore } from "react";
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export type ContributionComparisonRequest = {
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key: string;
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token: number;
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};
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let nextToken = 0;
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let currentRequest: ContributionComparisonRequest | null = null;
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const listeners = new Set<() => void>();
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function notify() {
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for (const listener of listeners) listener();
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}
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function subscribe(listener: () => void) {
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listeners.add(listener);
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return () => listeners.delete(listener);
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}
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function getSnapshot() {
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return currentRequest;
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}
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export function requestContributionComparison(key: string) {
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currentRequest = { key, token: ++nextToken };
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if (typeof window !== "undefined") {
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window.dispatchEvent(new CustomEvent("switch-to-changes-tab"));
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}
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notify();
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}
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export function consumeContributionComparisonRequest(token: number) {
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if (currentRequest?.token !== token) return;
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currentRequest = null;
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notify();
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}
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export function useContributionComparisonRequest() {
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return useSyncExternalStore(subscribe, getSnapshot, () => null);
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}
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