It appears that the repository has undergone several changes and renamings:

backend/node_modules/didyoumean/LICENSE

@@ -1,14 +0,0 @@
-## License
-
-didYouMean.js copyright (c) 2013 Dave Porter.
-
-Licensed under the Apache License, Version 2.0 (the "License");
-you may not use this file except in compliance with the License.
-You may obtain a copy of the License
-[here](http://www.apache.org/licenses/LICENSE-2.0).
-
-Unless required by applicable law or agreed to in writing, software
-distributed under the License is distributed on an "AS IS" BASIS,
-WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-See the License for the specific language governing permissions and
-limitations under the License.