This project was bootstrapped with Create React App.

Explanation

What things did you consider for these solution?

• Init a template with create-react-app so everything works out of the box (keep it simple)
• Shall I use redux? I decided not to use as It takes more time to configure
• What short of errors can I find when calling the endpoint? (status codes)
• A bit of Responsiveness?
• Use axios as "Promise based HTTP client"
• Is the currency the same all the time? I assumed yes
• Show message when user is in "offline mode" / "Not connected"
• Simulating a slow response of the API with a function “delay"

What other approaches did you think about? Why did you discard them?

• Use another JS framework? ReactJS is what I feel comfortable with. I can be the most efficient using it.
• Using table library? Simple table so decided not to use it
• Use spinner to load data. Maybe a text telling the user that data is being loaded

What trade-offs did you make?

• Api module exported: function "request" can be used by other components (modular code)
• Constants: Code will be changed everywhere.
• Take advantage of create-react-app templates to register a service worker to handle online/offline mode
• create-react-app templates gives you configuration out of the box so I did not spend time on it.

Folder Structure

After creation, your project should look like this:

catawiki-assignment/
  README.md
  node_modules/
  package.json
  public/
    index.html
    favicon.ico
    manifest.json
    stocks.json
  src/
    __tests__/
      App.test.js
    api/
      index.js
    assets/
      catawiki-logo.png
    components/
      App.js
    constants/
      index.js
    styles/
      App.css
      index.css
    index.js
    registerServiceWorker.js

For the project to build, these files must exist with exact filenames:

• public/index.html is the page template;
• src/index.js is the JavaScript entry point.

Available Scripts

In the project directory, you can run:

yarn install

Installs the project dependencies

yarn start

Runs the app in the development mode.
Open http://localhost:3000 to view it in the browser.

The page will reload if you make edits.
You will also see any lint errors in the console.

yarn test

Launches the test runner in the interactive watch mode.
See the section about running tests for more information.

yarn run build

Builds the app for production to the build folder.
It correctly bundles React in production mode and optimizes the build for the best performance.

The build is minified and the filenames include the hashes.
Your app is ready to be deployed!