<pre class="shiki github-dark shaku"><code>/** * @param {(path: string, config: any) =&gt; Promise&lt;any&gt;} getAPI * @returns {(path: string, config: any) =&gt; Promise&lt;any&gt; &amp; {clearCache: () =&gt; void}} * * getAPIWithMerging('/list', {type: 'bfe', filter:'dev', list: [1,2,3]})getAPIWithMerging('/list', {filter:'dev', type: 'bfe', list: [1,2,3]})getAPIWithMerging('/list', {list: [1,2,3], filter:'dev', type: 'bfe'}) */function createGetAPIWithMerging(getAPI) { const cache = new Map() function createKey(path, config){ const sortedConfig = Object.keys(config).sort().reduce((acc, curr)=&gt;{ acc[curr] = config[curr]; return acc; },{}) return JSON.stringify([path, sortedConfig]) } return function (path, config) { const key = createKey(path, config) if (cache.has(key)) { return cache.get(key) } const promise = getAPI(path, config); cache.set(key, promise); setTimeout(() =&gt; { cache.delete(key) }, 1000) return promise }}// const getAPIWithMerging = createGetAPIWithMerging(getAPI)// getAPIWithMerging('/list', {filter:'dev', type: 'bfe', list: [1,2,3]})</code></pre>

O(nlogn)

> ⚠️ This questions is updated on Oct 22, 2022 which has breaking changes on test specs.Thanks to @Qzlt4LK. Suppose we have a utility function getAPI(…