@uehreka/gatsby-plugin-anchor-links/gatsby-browser.js

Gatsby plugin for using anchor links with a Gatsby Link component (this one supports gatsby-plugin-transition-link).

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.onRouteUpdate = void 0;

var _utils = require("./utils");

var scrollTimeout = null;

var onRouteUpdate = function onRouteUpdate(_ref, _ref2) {
  var location = _ref.location;
  var _ref2$offset = _ref2.offset,
      offset = _ref2$offset === void 0 ? 0 : _ref2$offset;
  cancelAnimationFrame(scrollTimeout);
  scrollTimeout = requestAnimationFrame(function () {
    var windowHash;

    if (_utils.isBrowser) {
      window.gatsby_scroll_offset = offset;
      windowHash = window.gatsby_scroll_hash;
    }

    Boolean(windowHash) ? (0, _utils.scroller)(windowHash, offset) : (0, _utils.checkHash)(location, offset);

    if (_utils.isBrowser && windowHash) {
      window.gatsby_scroll_hash = undefined;
    }
  });
};

exports.onRouteUpdate = onRouteUpdate;