message: core-api: simplify joinPaths
diff: @@ -31,23 +31,11 @@ import { isExternalRouteRef } from './ExternalRouteRef';
  // Joins a list of paths together, avoiding trailing and duplicate slashes
  function joinPaths(...paths: string[]): string {
  - const joined = paths
  - .map(path => {
  - let ret = path;
  - if (path.endsWith('/')) {
  - ret = path.slice(0, -1);
  + const normalized = paths.join('/').replace(/\/\/+/g, '/');
  + if (normalized !== '/' && normalized.endsWith('/')) {
  + return normalized.slice(0, -1);
  }
  - if (!path.startsWith('/')) {
  - ret = `/${ret}`;
  - }
  - return ret;
  - })
  - .join('');
  -
  - if (joined !== '/' && joined.endsWith('/')) {
  - return joined.slice(0, -1);
  - }
  - return joined;
  + return normalized;
  }
  /**
  