40 lines
905 B
JavaScript
40 lines
905 B
JavaScript
// [times, realValue]
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const SPLIT = '%';
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/** Connect key with `SPLIT` */
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export function pathKey(keys) {
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return keys.join(SPLIT);
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}
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class Entity {
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instanceId;
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constructor(instanceId) {
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this.instanceId = instanceId;
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}
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/** @private Internal cache map. Do not access this directly */
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cache = new Map();
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get(keys) {
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return this.opGet(pathKey(keys));
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}
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/** A fast get cache with `get` concat. */
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opGet(keyPathStr) {
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return this.cache.get(keyPathStr) || null;
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}
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update(keys, valueFn) {
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return this.opUpdate(pathKey(keys), valueFn);
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}
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/** A fast get cache with `get` concat. */
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opUpdate(keyPathStr, valueFn) {
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const prevValue = this.cache.get(keyPathStr);
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const nextValue = valueFn(prevValue);
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if (nextValue === null) {
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this.cache.delete(keyPathStr);
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} else {
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this.cache.set(keyPathStr, nextValue);
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}
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}
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}
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export default Entity; |