mnswpr/lib
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levels.js chore: move mnswpr package source to lib dir 2026-04-03 10:45:07 +02:00
LICENSE chore: initial pkg license & readme 2026-04-03 23:11:28 +02:00
mnswpr.css chore: move mnswpr package source to lib dir 2026-04-03 10:45:07 +02:00
mnswpr.js refactor: use options object as param for generateGrid 2026-04-03 23:11:28 +02:00
package.json chore: update publish scripts 2026-04-03 23:46:24 +02:00
README.md chore(lib): add minimal-mnswpr link to guide 2026-04-03 23:19:40 +02:00
vite.config.js chore(lib): move vite config to lib dir 2026-04-04 01:22:04 +02:00

Build your own web browser game with mnswpr

Have you ever wondered how games on a web browser are built? Believe it or not, anything you see on a web browser can be built by anyone. That's why the web is so great: it is free and open for everyone to enjoy!

In this guide, we will use mnswpr as a simple building block for you to build your own browser game. I will walk you through the steps to create your own Minesweeper browser game from scratch.

If you want to skip to the ending, all the code are in this repository: minimal-mnswpr

First, let's go through the requirements.

Requirements

It is assumed that you have some knowledge in HTML and JavaScript. You can easily read about this and play around examples online. Some knowledge on using a terminal and a text editor is also required.

You will need a computer with node.js.

If you are familiar with HTML and JavaScript, and has a computer with node.js installed... let's now start with the project setup!

Project Setup

Open the terminal and confirm that you have node.js.

# verify the node.js version
node --version # Should print the version

Next, create a directory where we'll write some code for your game.

# on mac or linux
mkdir my-game

cd my-game

Once your terminal is in the new directory my-game, we will initialize the JavaScript project using the Node Package Manager or npm. Type the following on your terminal:

npm init

This will start the npm initialization interface, which will ask you some questions. You can think of what you want to answer, but if you want to go with the defaults, you can just press the Enter key repeatedly for each until the questions are done.

The last question will ask you if everything is OK:

Is this OK? (yes)

# Don't be shy, you can just press ENTER again

Next, we will add vite as a development tool for bundling and as a development server.

Additional info on Vite... Making web pages work in different browsers often brings challenges brought about by differences in technological implementations and limitations. Vite helps us so that our code will work in different environments without us worrying about issues in compatibility and performance.

npm i -D vite

Now that the JS project is initialized and we have a development environment with vite, we will install mnswpr as a dependency:

npm i @ayo-run/mnswpr

Finally, you can run the installed vite dev server by running the following:

# `npx` here is the execute command for npm
npx vite # will run the vite dev server

Vite will now show the address you can type to your browser to see your project. It will show something like this:

  VITE v8.0.3  ready in 128 ms

  ➜  Local:   http://localhost:5173/
  ➜  Network: use --host to expose
  ➜  press h + enter to show help

You can then open the "Local" address (e.g., http://localhost:5173) on your browser.

Congratulations. You now have your project setup! It's time to write some code.

Write Some Code

Believe it or not, you have done the hard part. Now we start the fun part: putting the parts of your game together!

There are mainly 3 kinds of code that work together in a web page: HTML, JavaScript or JS, and Cascading Style Sheets or CSS.

In this guide, we work mostly with HTML & JS to focus on the basics.

The HTML

Using your favorite text editor, create a file named index.html with the following content:

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>My Minesweeper Game</title>
    <style>
        html, body {
            background-color: black;
            color: white;
        }
    </style>
</head>
<body>
    <h1>My Minesweeper Game</h1>
    <div id="app"></div>
    <script type="module" src="main.js"></script>
</body>
</html>
Additional info on `index.html` The file name `index.html` is important. It is the default file that Web browsers look for in any given path/directory as the web page it will show.

If you have your browser opened to the Local address vite just showed earlier, you should see your very first web page with a title My Minesweeper Game

Exciting right? You can try editing the text inside <h1>...</h1> to see the web page change as well. :)

Take a second to read through the content of your index.html. The <div> element there with id="app" attribute will be where the game board will be rendered.

Now we just need JavaScript to do this. You will find the <script> tag that has the src="main.js" attribute, which means the web page is ready to load that JavaScript... but this file doesn't exist yet. So let's write the code for that.

The JavaScript

Create a new file named main.js with the following content:

/**
 * main.js
 */
import '@ayo-run/mnswpr/mnswpr.css'
import mnswpr from '@ayo-run/mnswpr'

const game = new mnswpr('app')
game.initialize()

When you create this main.js file, the dev server will instantly update the web page for you and you should now see your minesweeper browser game!


Just keep building.
A project by Ayo