Winerr.js

Winerr.js is a library that adapts and utilizes Winerr for generating fake error windows from various versions of Windows.

Winerr typically operates as a GUI page, but I’ve made it possible to use it in code, so you can call and interact with Winerr directly, receiving either a base64 string or a buffer in return.

Important: Winerr was created by Shikoshib, and I do not take credit for the original work. Without it, there would be nothing. Winerr.js is my project, an adaptation for the JavaScript/TypeScript environment.

⚠️ Winerr.js necessarily requires one of the following packages to work: Puppeteer or Puppeteer-core.

Features

• The package supports both official Winerr and local installations, allowing you to use Winerr.js with your own builds running on your own devices.
• Generate fake Windows error windows with customizable text, buttons, and icons.
• Output images as either base64 strings or buffers.
• Supports various error window styles, including icons from different Windows versions.

Installation

You can install winerr.js using npm:

npm install winerrjs

Usage

const { Winerr, SystemTypes, ButtonBuilder, ButtonTypes } = require('winerrjs');
const puppeteer = require("puppeteer");

async function generateError() {
    const client = new Winerr({
        "baseURL": "https://shikoshib.ru/tools/winerr", // Defaults to https://shikoshib.ru/tools/winerr if not specified
        "browser": await puppeteer.launch({ headless: true }),
    });

    try {
        const body = {
            "system": "Windows_11", // Specify the system type (Windows 11 in this case)
            "title": "Winerr.js", // Title of the error window
            "text": "Winerr.js is a library for generating error windows in Node.js.", // Error message text
            "icon": 28, // Icon id
            "buttons": [
                new ButtonBuilder().setType(ButtonTypes.DEFAULT).setText("Ok").build(),
                new ButtonBuilder().setType(ButtonTypes.DISABLED).setText("Close").build(),
                new ButtonBuilder().setType(ButtonTypes.RECOMMENDED).setText("Alt + f4").build(),
            ],
            "frameColor": "#000000", // (only for Windows 8.0-8.1)
            "primaryColor": "#FF0000", // (only for Windows 95-2000)
            "secondaryColor": "#00FF00", // (only for Windows 95-2000)
            "cross": false // If true, the cross is inactive,
            "debug": true // Adds *some* logs
        };

        console.log({ ...body, "toBase64": true });
        const errorBase64 = await client.image.create({ ...body, "toBase64": true });

        console.log("Generated error:");
        console.log(errorBase64);

        // Generate the error window as a buffer (if needed for file saving or further processing)
        const errorImage = await client.image.create({ ...body, "toBase64": false });
        
        console.log("Generated error as a buffer:");
        console.log(errorImage);

    } catch (error) {
        console.error("Error generating error window:", error);
    } finally {
        await client.browser.close();
    }
}

generateError();

And we end up with an image like this:

Saving to file

Also, saving to file was added in 2.4:

> client.image.create({ ...body, "toBase64": false, "path": "./image.png" });
> true

With this code, it returns a Boolean. True if the save is successful, and false if it fails.