UNPKG

1.28 kBJavaScriptView Raw
1"use strict";
2
3exports.__esModule = true;
4exports.default = void 0;
5
6var _react = require("react");
7
8var _useCommittedRef = _interopRequireDefault(require("./useCommittedRef"));
9
10function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
11
12function useInterval(fn, ms, paused, runImmediately) {
13 if (paused === void 0) {
14 paused = false;
15 }
16
17 if (runImmediately === void 0) {
18 runImmediately = false;
19 }
20
21 var handle;
22 var fnRef = (0, _useCommittedRef.default)(fn); // this ref is necessary b/c useEffect will sometimes miss a paused toggle
23 // orphaning a setTimeout chain in the aether, so relying on it's refresh logic is not reliable.
24
25 var pausedRef = (0, _useCommittedRef.default)(paused);
26
27 var tick = function tick() {
28 if (pausedRef.current) return;
29 fnRef.current();
30 schedule(); // eslint-disable-line no-use-before-define
31 };
32
33 var schedule = function schedule() {
34 clearTimeout(handle);
35 handle = setTimeout(tick, ms);
36 };
37
38 (0, _react.useEffect)(function () {
39 if (runImmediately) {
40 tick();
41 } else {
42 schedule();
43 }
44
45 return function () {
46 return clearTimeout(handle);
47 };
48 }, [paused, runImmediately]);
49}
50
51var _default = useInterval;
52exports.default = _default;
\No newline at end of file