@netdata/charts
Version:
Netdata frontend SDK and chart utilities
48 lines • 3.15 kB
JavaScript
function _slicedToArray(r, e) { return _arrayWithHoles(r) || _iterableToArrayLimit(r, e) || _unsupportedIterableToArray(r, e) || _nonIterableRest(); }
function _nonIterableRest() { throw new TypeError("Invalid attempt to destructure non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); }
function _unsupportedIterableToArray(r, a) { if (r) { if ("string" == typeof r) return _arrayLikeToArray(r, a); var t = {}.toString.call(r).slice(8, -1); return "Object" === t && r.constructor && (t = r.constructor.name), "Map" === t || "Set" === t ? Array.from(r) : "Arguments" === t || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(t) ? _arrayLikeToArray(r, a) : void 0; } }
function _arrayLikeToArray(r, a) { (null == a || a > r.length) && (a = r.length); for (var e = 0, n = Array(a); e < a; e++) n[e] = r[e]; return n; }
function _iterableToArrayLimit(r, l) { var t = null == r ? null : "undefined" != typeof Symbol && r[Symbol.iterator] || r["@@iterator"]; if (null != t) { var e, n, i, u, a = [], f = !0, o = !1; try { if (i = (t = t.call(r)).next, 0 === l) { if (Object(t) !== t) return; f = !1; } else for (; !(f = (e = i.call(t)).done) && (a.push(e.value), a.length !== l); f = !0); } catch (r) { o = !0, n = r; } finally { try { if (!f && null != t["return"] && (u = t["return"](), Object(u) !== u)) return; } finally { if (o) throw n; } } return a; } }
function _arrayWithHoles(r) { if (Array.isArray(r)) return r; }
import { useCallback, useEffect, useRef, useState } from "react";
import { unstable_cancelCallback as cancelCallback, unstable_scheduleCallback as scheduleCallback, unstable_runWithPriority as runWithPriority, unstable_IdlePriority as IdlePriority, unstable_ImmediatePriority as ImmediatePriority } from "scheduler";
export default (function () {
var _useState = useState(false),
_useState2 = _slicedToArray(_useState, 2),
isPending = _useState2[0],
setPending = _useState2[1];
var taskRef = useRef();
var cleanupRef = useRef();
var stopTransitionEffect = useCallback(function () {
if (taskRef.current) {
cancelCallback(taskRef.current);
taskRef.current = undefined;
setPending(false);
}
if (cleanupRef.current) {
cleanupRef.current();
cleanupRef.current = undefined;
}
}, []);
var startTransitionEffect = useCallback(function (callback) {
var priorityLevel = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : IdlePriority;
stopTransitionEffect();
var generator = callback();
var _iterate = function iterate() {
var result = generator.next();
cleanupRef.current = result.value;
if (result.done) setPending(false);else return _iterate;
};
var nextCallback = runWithPriority(priorityLevel, _iterate);
if (nextCallback) {
runWithPriority(ImmediatePriority, function () {
return setPending(true);
});
taskRef.current = scheduleCallback(priorityLevel, nextCallback);
}
}, []);
useEffect(function () {
return stopTransitionEffect;
}, []);
return [isPending, startTransitionEffect, stopTransitionEffect];
});