Operam test

Task

Requirements

• node v8 or higher due to use of util.promisify and ES6 features

Instructions

1. start MongoDB database with docker-compose up
2. run data ingest with npm run start:ingest
3. start Express server with npm run start:server *
4. start frontend with npm run start:frontend **

* complexity of algorithm that transforms data back to tree structure is O(n), because it uses only 1 loop and depends on the size of input

** search is not really functional, maybe because I didn't choose the right library for the tree, but you get the picture