@td-design/rn-hooks/lib/module/useRequest/plugins/usePollingPlugin.js

从ahooks里面抽取的一些在rn项目里可以使用的hooks。提高开发效率

import { useRef } from 'react';
import useUpdateEffect from '../../useUpdateEffect/index.js';

var usePollingPlugin = function (fetchInstance, _a) {
    var pollingInterval = _a.pollingInterval, _b = _a.pollingErrorRetryCount, pollingErrorRetryCount = _b === void 0 ? -1 : _b;
    var timerRef = useRef();
    var countRef = useRef(0);
    var stopPolling = function () {
        if (timerRef.current) {
            clearTimeout(timerRef.current);
        }
    };
    useUpdateEffect(function () {
        if (!pollingInterval) {
            stopPolling();
        }
    }, [pollingInterval]);
    if (!pollingInterval)
        return {};
    return {
        onBefore: function () {
            stopPolling();
        },
        onError: function () {
            countRef.current += 1;
        },
        onSuccess: function () {
            countRef.current = 0;
        },
        onFinally: function () {
            if (pollingErrorRetryCount === -1 ||
                // When an error occurs, the request is not repeated after pollingErrorRetryCount retries
                (pollingErrorRetryCount !== -1 && countRef.current <= pollingErrorRetryCount)) {
                // 之所以用setTimeout, 是因为fetchInstance.refresh()最后都会走到onFinally，然后这里又会再次调用refresh，从而实现跟interval一样的效果
                timerRef.current = setTimeout(function () {
                    fetchInstance.refresh();
                }, pollingInterval);
            }
            else {
                countRef.current = 0;
            }
        },
        onCancel: function () {
            stopPolling();
        },
    };
};

export { usePollingPlugin };