ahooks-v2/lib/useInterval/index.js

react hooks library

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});

var react_1 = require("react");

function useInterval(fn, delay, options) {
  var immediate = options === null || options === void 0 ? void 0 : options.immediate;
  var fnRef = react_1.useRef();
  fnRef.current = fn;
  react_1.useEffect(function () {
    var _a;

    if (delay === undefined || delay === null) return;

    if (immediate) {
      (_a = fnRef.current) === null || _a === void 0 ? void 0 : _a.call(fnRef);
    }

    var timer = setInterval(function () {
      var _a;

      (_a = fnRef.current) === null || _a === void 0 ? void 0 : _a.call(fnRef);
    }, delay);
    return function () {
      clearInterval(timer);
    };
  }, [delay]);
}

exports["default"] = useInterval;