60 lines
1.7 KiB
Vue
60 lines
1.7 KiB
Vue
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import { useStyleInject } from '../StyleContext';
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import type { KeyType } from '../Cache';
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import useHMR from './useHMR';
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import type { ComputedRef, Ref } from 'vue';
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import { onBeforeUnmount, computed, watch } from 'vue';
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import eagerComputed from '../../eagerComputed';
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export default function useClientCache<CacheType>(
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prefix: string,
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keyPath: Ref<KeyType[]>,
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cacheFn: () => CacheType,
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onCacheRemove?: (cache: CacheType, fromHMR: boolean) => void,
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): ComputedRef<CacheType> {
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const styleContext = useStyleInject();
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const fullPath = computed(() => [prefix, ...keyPath.value]);
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const fullPathStr = eagerComputed(() => fullPath.value.join('_'));
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const HMRUpdate = useHMR();
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const clearCache = () => {
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styleContext.cache.update(fullPath.value, prevCache => {
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const [times = 0, cache] = prevCache || [];
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const nextCount = times - 1;
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if (nextCount === 0) {
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onCacheRemove?.(cache, false);
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return null;
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}
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return [times - 1, cache];
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});
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};
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// Create cache
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watch(
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fullPathStr,
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() => {
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clearCache();
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styleContext.cache.update(fullPath.value, prevCache => {
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const [times = 0, cache] = prevCache || [];
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// HMR should always ignore cache since developer may change it
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let tmpCache = cache;
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if (process.env.NODE_ENV !== 'production' && cache && HMRUpdate) {
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onCacheRemove?.(tmpCache, HMRUpdate);
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tmpCache = null;
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}
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const mergedCache = tmpCache || cacheFn();
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return [times + 1, mergedCache];
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});
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},
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{ immediate: true },
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);
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onBeforeUnmount(() => {
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clearCache();
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});
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const val = computed(() => styleContext.cache.get(fullPath.value)![1]);
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return val;
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}
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