@restart/hooks
Version:
A set of utility and general-purpose React hooks.
32 lines (31 loc) • 1.16 kB
JavaScript
exports.__esModule = true;
exports.default = void 0;
var _react = require("react");
var _useCommittedRef = _interopRequireDefault(require("./useCommittedRef.js"));
function _interopRequireDefault(e) { return e && e.__esModule ? e : { default: e }; }
function useRafInterval(fn, ms, paused = false) {
let handle;
let start = new Date().getTime();
const fnRef = (0, _useCommittedRef.default)(fn);
// this ref is necessary b/c useEffect will sometimes miss a paused toggle
// orphaning a setTimeout chain in the aether, so relying on it's refresh logic is not reliable.
const pausedRef = (0, _useCommittedRef.default)(paused);
function loop() {
const current = new Date().getTime();
const delta = current - start;
if (pausedRef.current) return;
if (delta >= ms && fnRef.current) {
fnRef.current();
start = new Date().getTime();
}
cancelAnimationFrame(handle);
handle = requestAnimationFrame(loop);
}
(0, _react.useEffect)(() => {
handle = requestAnimationFrame(loop);
return () => cancelAnimationFrame(handle);
}, []);
}
var _default = useRafInterval;
exports.default = _default;
;