Toast Exercise

Welcome to the toast exercise! We just got a new project from the Product team to implement a simple toast system that notifies users when someone fills out a form they've published (a form submission). They then can "like" the submission to have them saved on their list.

Our hope is this exercise should take around 2-4 hours.

Please do not spend more than 4 hours. If you do not finish, that is fine. We are most concerned with discussing how you approached the problem and solution during the interview.

Setup

• Must have recent versions of git, yarn and node installed
• Use any editor or other tools

Once you have the files on your computer (after unzipping), run:

git init
yarn install
yarn start

Exercise Overview

Take some time to familiarize yourself with this code. This was bootstrapped with create-react-app and it's instructions are below if you need them.

Requirements

• Commit often with messages to "document" your thought process and work. The more the better!
• DO NOT remove any dependencies
• DO NOT modify src/service/mockServer.js
• You MUST use React for your primary UI development
• You MAY add any dependency to help you
• You MAY use any CSS framework you'd like
• You MAY choose any method to store UI state
• AVOID editing public/index.html. Exceptions made for CSS frameworks
• Your app MUST run with yarn start
• (Bonus) Tests must pass with yarn test

This repo is setup to import standard .css files:

import './my-styles.css'

This way, you don't have to edit the index.html file.

Mock Server

A "server" is provided. Its API is detailed below.

src/service/mockServer.js has a few functions you will need to use.

onMessage(callback) is used to register a callback for when we get a new form submission from our server. In this example, new form submissions are delivered when you hit the "New Submission" button in the header.

saveFormSubmission(formSubmission) saves the submission to our "server" (localstorage). To update a submission, you pass a full submission with the values updated. We do have a flaky connection to our database that can sometimes fail.

fetchLikedFormSubmissions() "fetches" the form submissions that have been liked (updated by you). This also tends to be slow and fail at times.

Feature Requirements

We want to have toasts show up whenever we receive a message from the server that a new client just signed up! It should look like something like:

It doesn't have to look exact.

Requirements

• When you click "New Submission" your app must respond and show a toast
• Toasts that are "liked" are added to the list on the page
• Toasts that are dismissed are removed and you never see them again
• When you refresh the browser, the list must persist.
• (Bonus) Any level of polish you think would make for a good UX

Hints

• Focus on getting the core requirements down first. Then work on polish if you have time
• If you use Material-UI, they have a <Snackbar> component that can be helpful.
• We often use a polling method to get updates. You can use polling to "refresh" your liked form submission list.

Submitting

Please submit your code, with commit messages, to a public git repository and reply to the recruiting emails with the link to your repository.

---

Create React App README

This project was bootstrapped with Create React App.

Available Scripts

In the project directory, you can run:

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.

Learn More

You can learn more in the Create React App documentation.

To learn React, check out the React documentation.