"use strict";

exports.__esModule = true;
exports.default = void 0;

var _react = require("react");

(function () {
  var enterModule = typeof reactHotLoaderGlobal !== 'undefined' ? reactHotLoaderGlobal.enterModule : undefined;
  enterModule && enterModule(module);
})();

(function () {
  var enterModule = typeof reactHotLoaderGlobal !== 'undefined' ? reactHotLoaderGlobal.enterModule : undefined;
  enterModule && enterModule(module);
})();

function _slicedToArray(arr, i) { return _arrayWithHoles(arr) || _iterableToArrayLimit(arr, i) || _unsupportedIterableToArray(arr, i) || _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(o, minLen) { if (!o) return; if (typeof o === "string") return _arrayLikeToArray(o, minLen); var n = Object.prototype.toString.call(o).slice(8, -1); if (n === "Object" && o.constructor) n = o.constructor.name; if (n === "Map" || n === "Set") return Array.from(o); if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen); }

function _arrayLikeToArray(arr, len) { if (len == null || len > arr.length) len = arr.length; for (var i = 0, arr2 = new Array(len); i < len; i++) { arr2[i] = arr[i]; } return arr2; }

function _iterableToArrayLimit(arr, i) { var _i = arr == null ? null : typeof Symbol !== "undefined" && arr[Symbol.iterator] || arr["@@iterator"]; if (_i == null) return; var _arr = []; var _n = true; var _d = false; var _s, _e; try { for (_i = _i.call(arr); !(_n = (_s = _i.next()).done); _n = true) { _arr.push(_s.value); if (i && _arr.length === i) break; } } catch (err) { _d = true; _e = err; } finally { try { if (!_n && _i["return"] != null) _i["return"](); } finally { if (_d) throw _e; } } return _arr; }

function _arrayWithHoles(arr) { if (Array.isArray(arr)) return arr; }

var __signature__ = typeof reactHotLoaderGlobal !== 'undefined' ? reactHotLoaderGlobal.default.signature : function (a) {
  return a;
};

var __signature__ = typeof reactHotLoaderGlobal !== 'undefined' ? reactHotLoaderGlobal.default.signature : function (a) {
  return a;
};

var useInfiniteScroll = function useInfiniteScroll(entities, pageSize, countOffset) {
  if (countOffset === void 0) {
    countOffset = 0;
  }

  var _useState = (0, _react.useState)(1),
      _useState2 = _slicedToArray(_useState, 2),
      currentPage = _useState2[0],
      setCurrentPage = _useState2[1];

  var count = Math.min(entities.length, pageSize * currentPage + countOffset);
  var visibleEntities = entities.slice(0, count);
  var scrollEvent = (0, _react.useCallback)(function (evt) {
    if (evt.target.scrollHeight - (evt.target.scrollTop + evt.target.offsetHeight) < 100 && visibleEntities.length === pageSize * currentPage + countOffset) {
      setCurrentPage(currentPage + 1);
    }
  }, [setCurrentPage, currentPage, visibleEntities.length, countOffset, pageSize]);
  return [visibleEntities, scrollEvent];
};

__signature__(useInfiniteScroll, "useState{[currentPage, setCurrentPage](1)}\nuseCallback{scrollEvent}");

__signature__(useInfiniteScroll, "useState{[currentPage, setCurrentPage](1)}\nuseCallback{scrollEvent}");

var _default = useInfiniteScroll;
var _default2 = _default;
var _default3 = _default2;
exports.default = _default3;
;

(function () {
  var reactHotLoader = typeof reactHotLoaderGlobal !== 'undefined' ? reactHotLoaderGlobal.default : undefined;

  if (!reactHotLoader) {
    return;
  }

  reactHotLoader.register(useInfiniteScroll, "useInfiniteScroll", "/home/vsts/work/1/s/src/hooks/useInfiniteScroll.js");
  reactHotLoader.register(_default, "default", "/home/vsts/work/1/s/src/hooks/useInfiniteScroll.js");
})();

;

(function () {
  var leaveModule = typeof reactHotLoaderGlobal !== 'undefined' ? reactHotLoaderGlobal.leaveModule : undefined;
  leaveModule && leaveModule(module);
})();

;

(function () {
  var reactHotLoader = typeof reactHotLoaderGlobal !== 'undefined' ? reactHotLoaderGlobal.default : undefined;

  if (!reactHotLoader) {
    return;
  }

  reactHotLoader.register(useInfiniteScroll, "useInfiniteScroll", "/home/vsts/work/1/s/src/hooks/useInfiniteScroll.js");
  reactHotLoader.register(_default2, "default", "/home/vsts/work/1/s/src/hooks/useInfiniteScroll.js");
})();

;

(function () {
  var leaveModule = typeof reactHotLoaderGlobal !== 'undefined' ? reactHotLoaderGlobal.leaveModule : undefined;
  leaveModule && leaveModule(module);
})();