46 lines
1.3 KiB
JavaScript
46 lines
1.3 KiB
JavaScript
import _classCallCheck from "@babel/runtime/helpers/esm/classCallCheck";
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import _createClass from "@babel/runtime/helpers/esm/createClass";
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import _defineProperty from "@babel/runtime/helpers/esm/defineProperty";
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// Firefox has low performance of map.
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var CacheMap = /*#__PURE__*/function () {
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function CacheMap() {
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_classCallCheck(this, CacheMap);
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_defineProperty(this, "maps", void 0);
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// Used for cache key
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// `useMemo` no need to update if `id` not change
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_defineProperty(this, "id", 0);
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_defineProperty(this, "diffRecords", new Map());
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this.maps = Object.create(null);
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}
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_createClass(CacheMap, [{
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key: "set",
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value: function set(key, value) {
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// Record prev value
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this.diffRecords.set(key, this.maps[key]);
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this.maps[key] = value;
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this.id += 1;
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}
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}, {
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key: "get",
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value: function get(key) {
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return this.maps[key];
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}
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/**
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* CacheMap will record the key changed.
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* To help to know what's update in the next render.
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*/
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}, {
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key: "resetRecord",
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value: function resetRecord() {
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this.diffRecords.clear();
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}
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}, {
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key: "getRecord",
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value: function getRecord() {
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return this.diffRecords;
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}
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}]);
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return CacheMap;
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}();
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export default CacheMap; |