"use strict"; 'use client'; var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault"); Object.defineProperty(exports, "__esModule", { value: true }); exports.default = useScrollTrigger; var _extends2 = _interopRequireDefault(require("@babel/runtime/helpers/extends")); var _objectWithoutPropertiesLoose2 = _interopRequireDefault(require("@babel/runtime/helpers/objectWithoutPropertiesLoose")); var React = _interopRequireWildcard(require("react")); const _excluded = ["getTrigger", "target"]; function _getRequireWildcardCache(e) { if ("function" != typeof WeakMap) return null; var r = new WeakMap(), t = new WeakMap(); return (_getRequireWildcardCache = function (e) { return e ? t : r; })(e); } function _interopRequireWildcard(e, r) { if (!r && e && e.__esModule) return e; if (null === e || "object" != typeof e && "function" != typeof e) return { default: e }; var t = _getRequireWildcardCache(r); if (t && t.has(e)) return t.get(e); var n = { __proto__: null }, a = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var u in e) if ("default" !== u && Object.prototype.hasOwnProperty.call(e, u)) { var i = a ? Object.getOwnPropertyDescriptor(e, u) : null; i && (i.get || i.set) ? Object.defineProperty(n, u, i) : n[u] = e[u]; } return n.default = e, t && t.set(e, n), n; } function defaultTrigger(store, options) { const { disableHysteresis = false, threshold = 100, target } = options; const previous = store.current; if (target) { // Get vertical scroll store.current = target.pageYOffset !== undefined ? target.pageYOffset : target.scrollTop; } if (!disableHysteresis && previous !== undefined) { if (store.current < previous) { return false; } } return store.current > threshold; } const defaultTarget = typeof window !== 'undefined' ? window : null; function useScrollTrigger(options = {}) { const { getTrigger = defaultTrigger, target = defaultTarget } = options, other = (0, _objectWithoutPropertiesLoose2.default)(options, _excluded); const store = React.useRef(); const [trigger, setTrigger] = React.useState(() => getTrigger(store, other)); React.useEffect(() => { const handleScroll = () => { setTrigger(getTrigger(store, (0, _extends2.default)({ target }, other))); }; handleScroll(); // Re-evaluate trigger when dependencies change target.addEventListener('scroll', handleScroll, { passive: true }); return () => { target.removeEventListener('scroll', handleScroll, { passive: true }); }; // See Option 3. https://github.com/facebook/react/issues/14476#issuecomment-471199055 // eslint-disable-next-line react-hooks/exhaustive-deps }, [target, getTrigger, JSON.stringify(other)]); return trigger; }