@antv/dumi-theme-antv/dist/slots/ManualContent/PrevAndNext.js

AntV website theme based on dumi2.

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(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(arr) { if (Array.isArray(arr)) return arr; }
import React, { useMemo } from 'react';
import { useMenu } from "../../hooks/useMenu";
import { NavigatorBanner } from "./NavigatorBanner";
import styles from "./index.module.less";
export var PrevAndNext = function PrevAndNext() {
  var _useMenu = useMenu(),
    _useMenu2 = _slicedToArray(_useMenu, 3),
    selectedKey = _useMenu2[1],
    flattenMenuItems = _useMenu2[2];
  var _useMemo = useMemo(function () {
      if (!flattenMenuItems) {
        return [undefined, undefined];
      }
      var activeMenuItemIndex = -1;
      flattenMenuItems.forEach(function (menuItem, i) {
        if (menuItem && menuItem.key === selectedKey) {
          activeMenuItemIndex = i;
        }
      });
      var prevItem = flattenMenuItems[activeMenuItemIndex - 1];
      var nextItem = flattenMenuItems[activeMenuItemIndex + 1];
      return [prevItem ? {
        slug: prevItem.link,
        title: prevItem.title
      } : undefined, nextItem ? {
        slug: nextItem.link,
        title: nextItem.title
      } : undefined];
    }, [flattenMenuItems, selectedKey]),
    _useMemo2 = _slicedToArray(_useMemo, 2),
    prev = _useMemo2[0],
    next = _useMemo2[1];
  return /*#__PURE__*/React.createElement("div", {
    className: styles.preandnext
  }, /*#__PURE__*/React.createElement(NavigatorBanner, {
    type: "prev",
    post: prev
  }), /*#__PURE__*/React.createElement(NavigatorBanner, {
    type: "next",
    post: next
  }));
};