CachedApi.js

async function fetchResponse(url) {
  const res = await fetch(url);
  const jsonResponse = await res.json();
  return jsonResponse;
}

function cachedApiCall(time) {
  let apiData = new Map();
  return async function (url) {
    if (apiData.has(url)) {
      const res = apiData.get(url);
      if (Date.now() - res.timeStamp <= time) {
        return Promise.resolve(res.value);
      }
    }
    const makeApiCall = await fetchResponse(url);
    apiData.set(url, {
      value: makeApiCall,
      timeStamp: Date.now(),
    });
    return Promise.resolve(makeApiCall);
  };
}

const call = cachedApiCall(1500);

call("https://jsonplaceholder.typicode.com/todos/1", {}).then((a) =>
  console.log(a)
);

setTimeout(() => {
  call("https://jsonplaceholder.typicode.com/todos/1", {}).then((a) =>
    console.log(a)
  );
}, 700);

setTimeout(() => {
  call("https://jsonplaceholder.typicode.com/todos/1", {}).then((a) =>
    console.log(a)
  );
}, 2000);