universal-router/generateUrls/browser.mjs

Isomorphic router for JavaScript web applications

/*! Universal Router | MIT License | https://www.kriasoft.com/universal-router/ */

import UniversalRouter from '..';

/**
 * Universal Router (https://www.kriasoft.com/universal-router/)
 *
 * Copyright © 2015-present Kriasoft, LLC. All rights reserved.
 *
 * This source code is licensed under the Apache 2.0 license found in the
 * LICENSE.txt file in the root directory of this source tree.
 */

/* eslint no-param-reassign: ['error', { props: false }] */

var pathToRegexp = UniversalRouter.pathToRegexp;

var cache = new Map();

function cacheRoutes(routesByName, route, routes) {
  if (routesByName.has(route.name)) {
    throw new Error('Route "' + route.name + '" already exists');
  }

  if (route.name) {
    routesByName.set(route.name, route);
  }

  if (routes) {
    for (var i = 0; i < routes.length; i += 1) {
      var childRoute = routes[i];
      childRoute.parent = route;
      cacheRoutes(routesByName, childRoute, childRoute.children);
    }
  }
}

function generateUrls(router) {
  var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};

  if (!(router instanceof UniversalRouter)) {
    throw new TypeError('An instance of UniversalRouter is expected');
  }

  router.routesByName = router.routesByName || new Map();

  return function (routeName, params) {
    var route = router.routesByName.get(routeName);
    if (!route) {
      router.routesByName.clear(); // clear cache
      cacheRoutes(router.routesByName, router.root, router.root.children);

      route = router.routesByName.get(routeName);
      if (!route) {
        throw new Error('Route "' + routeName + '" not found');
      }
    }

    var regexp = cache.get(route.fullPath);
    if (!regexp) {
      var fullPath = '';
      var rt = route;
      while (rt) {
        var path = Array.isArray(rt.path) ? rt.path[0] : rt.path;
        if (path) {
          fullPath = path + fullPath;
        }
        rt = rt.parent;
      }
      var tokens = pathToRegexp.parse(fullPath);
      var toPath = pathToRegexp.tokensToFunction(tokens);
      var keys = Object.create(null);
      for (var i = 0; i < tokens.length; i += 1) {
        if (typeof tokens[i] !== 'string') {
          keys[tokens[i].name] = true;
        }
      }
      regexp = { toPath: toPath, keys: keys };
      cache.set(fullPath, regexp);
      route.fullPath = fullPath;
    }

    var url = router.baseUrl + regexp.toPath(params, options) || '/';

    if (options.stringifyQueryParams && params) {
      var queryParams = {};
      var _keys = Object.keys(params);
      for (var _i = 0; _i < _keys.length; _i += 1) {
        var key = _keys[_i];
        if (!regexp.keys[key]) {
          queryParams[key] = params[key];
        }
      }
      var query = options.stringifyQueryParams(queryParams);
      if (query) {
        url += query.charAt(0) === '?' ? query : '?' + query;
      }
    }

    return url;
  };
}

UniversalRouter.generateUrls = generateUrls;

export default generateUrls;
//# sourceMappingURL=browser.mjs.map