ahooks/es/useRequest/src/utils/cachePromise.js

react hooks library

const cachePromise = new Map();
const getCachePromise = (cacheKey) => {
    return cachePromise.get(cacheKey);
};
const setCachePromise = (cacheKey, promise) => {
    // Should cache the same promise, cannot be promise.finally
    // Because the promise.finally will change the reference of the promise
    cachePromise.set(cacheKey, promise);
    // no use promise.finally for compatibility
    promise
        .then((res) => {
        cachePromise.delete(cacheKey);
        return res;
    })
        .catch(() => {
        cachePromise.delete(cacheKey);
    });
};
export { getCachePromise, setCachePromise };