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Pen Pals

Production Build License: MIT Contributor Covenant Netlify Status

Overview

Pen Pals is a React web application geared towards primary school students that teaches basic Python syntax through Python's Turtle library! Turtle is Python's digital canvas where a user can move the "Turtle" to draw on the screen. Pen Pal introduces turning and moving through a level-based game.

This project uses React, Typescript, SCSS, and Yarn package manager.

Development Setup

We'll use a really common Node.js project workflow + Yarn! First, let's clone our repository, and install all of our yarn dependencies:

git clone https://github.com/uclaacm/pen-pals.git
cd pen-pals

The instructions to install Node.js will be different based on which platform you're running. It's heavily advised to install your Node.js using NVM (Node Version Manager) because it's easy to manage a standardized version and update it as needed.

macOS or Linux

Instructions for installing NVM on macOS and Linux (including WSL) are here.

At this point you can run nvm install. Assuming you've already cded into the correct directory as mentioned earlier, this will download the LTS (Long-Term Support) version of Node.js for you. Then, run nvm use to make sure you've switched to the right version; if it tells you Now using Node v16.13.2 or something similar, you're good to go!

Windows

If you're on Windows, you can use NVM for Windows, a separate version manager whose installation instructions can be found here. Once you've done that, you can run nvm install 16.13.2 to install the LTS version of Node.js, and nvm use 16.13.2 to switch to it.

If you don't have yarn installed...

npm install --global yarn

Then install our dependencies!

yarn install
yarn prepare

(If the above commands don't work even after installing yarn via npm, check this npm installation guide, click on alternatives, choose your operating system, and follow the steps there!)

(We handle the yarn and npm conflict issues within our .gitignore we set up so dw about it!) To start our app, you just need to run yarn start!

yarn start

And to build our project for production (with CRA and Webpack's bundling with all that goodness),

yarn run build

Contribution Workflow

Thanks for your interest in contributing to pen-pals! ❤️

Here's a quick guide on how to get started.

  1. Make a new branch of this repository with the name of the ticket assigned. main is a protected branch, so you cannot push to it.
  2. Follow the instructions in "Development Setup" above. If you're on a different branch, check it out using git checkout.
  3. Beep boop away!
  4. Before you push, make sure your app runs with yarn start. If there are any errors, our CI/CD service will reject your build.
  5. Once you're ready, stage and commit your changes!
  6. Make a pull request with your changes, and let someone on your project team know. a. Netlify has a neat feature called "Deploy Previews" that give you a link to preview your changes; see the blog post for more info!
  7. If your code passes code review, then we can squash and merge it into main. Congratulations! If you'd like, it's now safe to delete your branch/fork.

Helpful Commands

By running yarn lint-fix we can use the linter that we set-up to format our code the way that passes our style checks! Before you commit your changes and submit a pull request, make sure to run

yarn lint-fix

With Husky, we run yarn lint-staged automatically before you commit! If you want to lint before committing, you can run yarn lint-fix.

Template Repository Features

What's this? This is a template repository that sets up a few minor systems for a React micro-app, which is something that we've done frequently at Teach LA. Here's what it does:

  • has GitHub Actions automatically set up for testing and linting builds
  • has a default Dependabot config for yarn (with monthly audits)
  • has Netlify redirects set up for multi-route SPAs
  • has Webpack that helps bundle JS/TS files for browser usage
  • Husky for Git Hooks which enforces linting rules for files on commit
  • ESLint for our .TS and .TSX files
  • StyleLint with SASS guidelines for CSS, SASS, SCSS stylesheets.
  • includes the Contributor Covenant in CODE_OF_CONDUCT.md
  • has a little bit of documentation for new people!
  • Some extra stuff like changing the app logo to TeachLA's logo and setting up the src directory for further development!

FAQs

Some lint is unnecessary :( How do I disable it?

There are actually 2 main ways to disable lint. Disabling the "rule" entirely, or in just a single line or file!

Disabling the rule entirely.

** Make sure this is what you really want!! It is often likely that you want to disable for just a single file. **

Depending on whether it's from stylelint or eslint, you can go to stylelintrc.json and add to `"rules"

<rule-name>: null

or eslintrc.json and add

'<rule-name>': 'off',

Disabling a rule for a single line or file

Take a look at the eslint docs for this: https://eslint.org/docs/user-guide/configuring/rules#disabling-rules

Or the stylelint docs for this: https://stylelint.io/user-guide/ignore-code/

It's pretty simple though, it'd look something like

/* eslint-disable <rule-name> */

or

// eslint-disable-next-line

The process for stylelint is very similar.

Husky is yelling at me and not letting me commit :(

Add the -n flag to your commit message to skip Husky's auto-linting.

EG: git commit -m "changes" -n

Assets are angry and won't accept

Our webpack set-up currently accepts asset files with the following extensions: png, svg, jpg/jpeg, gif, mp3, ttf

Code for it can be seen in line 22 webpack.dev.js and in webpack.prod.js

      {
        test: /\.(png|svg|jpe?g|gif|mp3|ttf)$/i, // we use regex to test different file types
        use: {
          loader: 'file-loader',
          options: {
            name: 'assets/[name].[ext]',
          },
        },
      },

If you want to add more assets like .pdf, .wav, .mp4, <YOUR_ASSET_TYPE> etc.

  • Update webpack.dev.js file. Change test: /\.(png|svg|jpe?g|gif|mp3)$/i to test: /\.(png|svg|jpe?g|gif|mp3|<YOUR_ASSET_TYPE>)$/i
  • Update webpack.prod.js file. Change test: /\.(png|svg|jpe?g|gif|mp3)$/i, to test: /\.(png|svg|jpe?g|gif|mp3|<YOUR_ASSET_TYPE>)$/i
  • (If typing is needed) add a folder under custom_typing => import-<YOUR_ASSET_TYPE>
  • (If typing is needed) create a file like import-<YOUR_ASSET_TYPE>.d.ts
  • (If typing is needed) add in:
/* eslint-disable @typescript-eslint/no-explicit-any */
declare module '*.<YOUR_ASSET_TYPE>' {
  const value: <YOUR_ASSET_TYPE-TYPE>;
  export default value;
}

How can I tell if my asset is actually being served?

Take a look at <YOUR_PROJECT_PATH>/asset-manifest.json. Like this!

Things You Should Do (and then delete this section)

Thanks for using our template! We hope this makes your life developing significantly easier.

Things you should do after using this as a template:

  • this is a reminder to periodically run accessibility checks & Search Engine Optimization on your project by running inspect element / developer tools > Lighthouse
  • update and delete this documentation!
  • contact Regina Wang (@reginawang99), Matthew Nieva (@matthewcn56), or Jiin Kim (@doubleiis02) with any questions about our quickstarter template set-up.

Some More Helpful Tools

  • Preloading Images - if rendering images gets annoying because it's slow: Link Example here

Licensing & Attribution

This project and its code are licensed under the MIT License. You're free to use them however you wish, though we'd love to hear from you if you found this useful!