The project was born out of pure interest in using Lightning Web Components outside of the Salesforce platform. I was inspired to the Snake idea by the following blog article and reused some of the game code:

How to Build the Snake Game Using Lightning Web Components

If you are also interested in LWC OSS you can find more info here: https://lwc.dev/

The directory structure looks like this:

src/
  ├── assets/           // static assets
  │   └── fonts/
  │   └── icons/
  │   └── images/
  │   └── styles/
  |   └── favicon.ico
  └── layouts/          // lwc layouts
  │   └── main.html
  └── modules/          // lwc modules
      └── snake/
          └── app/
              ├── app.css
              ├── app.html
              └── app.js
          └── game/
              ├── game.css
              ├── game.html
              └── game.js
lwr.config.json         // lwr configuration
package.json            // npm packaging configuration

The LWR server is configured in lwr.config.json, at the root of the project. It has two LWC module and one server-side route.

{
  "lwc": { "modules": [{ "dir": "$rootDir/src/modules" }, { "npm": "lightning-base-components" }] },
  "routes": [
    {
      "id": "snake",
      "path": "/",
      "rootComponent": "snake/app",
      "layoutTemplate": "$layoutsDir/main.html",
      "bootstrap": {
        "syntheticShadow": true
      }
    }
  ],
  "assets": [
    {
      "alias": "assetsDir",
      "dir": "$rootDir/src/assets",
      "urlPath": "/assets"
    },
    {
      "dir": "$rootDir/src/assets/fonts",
      "urlPath": "/fonts"
    },
    {
      "alias": "favicon",
      "file": "$rootDir/src/assets/favicon.ico",
      "urlPath": "/favicon.ico"
    }
  ]
}

Run Prettier to check all files for formatting issues:

yarn run prettier

Run ESLint to check for linting issues:

yarn run lint

Install all required dependencies:

yarn install

Start the local development server:

yarn dev

Open the site at http://localhost:3000

Build the project:

yarn build

Preview the generated site:

yarn start

Open the site at http://localhost:3000