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59 lines
1.8 KiB
59 lines
1.8 KiB
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 { ShallowRef, Ref } from 'vue';
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import { onBeforeUnmount, watch, watchEffect, shallowRef } from 'vue';
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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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): ShallowRef<CacheType> {
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const styleContext = useStyleInject();
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const fullPathStr = shallowRef('');
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const res = shallowRef<CacheType>();
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watchEffect(() => {
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fullPathStr.value = [prefix, ...keyPath.value].join('%');
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});
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const HMRUpdate = useHMR();
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const clearCache = (pathStr: string) => {
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styleContext.value.cache.update(pathStr, 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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watch(
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fullPathStr,
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(newStr, oldStr) => {
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if (oldStr) clearCache(oldStr);
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// Create cache
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styleContext.value.cache.update(newStr, 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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res.value = styleContext.value.cache.get(fullPathStr.value)![1];
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},
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{ immediate: true },
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);
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onBeforeUnmount(() => {
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clearCache(fullPathStr.value);
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});
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return res;
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}
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