1<p>const createApiCache = () => {</p><p>  const cache = new Map();</p><p>  </p><p>  return async function fetchWithCache(url, options = {}) {</p><p>    const cacheKey = <code>${url}-${JSON.stringify(options)}</code>;</p><p>    </p><p>    if (cache.has(cacheKey)) {</p><p>      const { data, timestamp } = cache.get(cacheKey);</p><p>      const age = Date.now() - timestamp;</p><p>      </p><p>      if (age < 5 <em> 60 </em> 1000) {  // 5 minutes</p><p>        return data;</p><p>      }</p><p>    }</p><p>    </p><p>    const response = await fetch(url, options);</p><p>    const data = await response.json();</p><p>    </p><p>    cache.set(cacheKey, {</p><p>      data,</p><p>      timestamp: Date.now()</p><p>    });</p><p>    </p><p>    return data;</p><p>  };</p><p>};</p><p>const api = createApiCache();</p>