In this exercise, you would get history of events from an e-commerce website using an API returning JSON that looks like the following mocked file: test/history-api-mock.json

We expect you to make unit tests from test/index.spec.js pass.

Open this repository in GitPod.

Install Node.js

Install Git

Create a GitHub account if you don't have one and fork this project (top right hand corner button).

Clone your fork to work on it on a local machine:

git clone https://github.com/<your-username>/JavaScriptTest
cd JavaScriptTest

Install dependencies: npm install

Modify/create files inside the src directory (you should not need to edit any other file to succeed).

Then fill the methods in src/analytics.js and add intermediate methods if it can help the readability of the code.

You can test your code using npm test

You can debug your code using src/index.js and running npm start

Create a ZIP or TAR archive with modified files (src directory should be enough for this test, but you can include package.json if you added packages).

On GitPod, you can right-click on the src folder and click "Download".

Then send us the archive by mail.

You should first try to get outputs of methods as close as possible to the values unit test expect.

We will take into consideration:

• the clarity of your code: variables names, indentation, comments, commit messages;
• the respect of best practices;
• the optimization of the code: significant optimizations like caching results or reducing number of loops would be appreciated.