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Setting Up Vite for Combining and Minifying SCSS and JavaScript

2 min read
Published on 8th January 2024

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Vite, a modern front-end build tool, is acclaimed for its fast and efficient handling of assets like SCSS and JavaScript. One of Vite's key strengths is its ability to combine and minify these files, which is crucial for optimizing web performance. Let's walk through setting up Vite in your project to combine and minify SCSS and JavaScript files.

Why Combine and Minify with Vite?

Combining and minifying files reduces the number of HTTP requests and the size of files, respectively. This leads to faster loading times and improved website performance, both critical for user experience and SEO.

Prerequisites

  • Node.js installed on your system.
  • Basic knowledge of SCSS/Sass and JavaScript.

Step 1: Initialize Your Project

Start by creating a new project directory and initializing it:

mkdir my-vite-project
cd my-vite-project
npm init @vitejs/app

Follow the prompts to set up your project. Choose a project name and select a template (e.g., Vanilla, Vue, React).

Step 2: Install Dependencies

Navigate to your project directory and install the necessary dependencies:

npm install

For SCSS, you may need to install additional packages:

npm install -D sass

Step 3: Configure Vite for SCSS and JavaScript

Vite can handle SCSS out of the box. To configure SCSS file handling, modify the vite.config.js file:


// vite.config.js
import { defineConfig } from 'vite';
export default defineConfig({
  css: {
    preprocessorOptions: {
      scss: {
        additionalData: `$injectedColor: orange;`
      }
    }
  }
});

This configuration allows you to set global SCSS variables and options.

Step 4: Organize Your SCSS and JavaScript Files

Create a src directory in your project root. Inside src, organize your SCSS and JavaScript files. For example:

  • src/main.js: Your entry JavaScript file.
  • src/styles.scss: Your main SCSS file.

Step 5: Link Your Files in the HTML Template

In your index.html (or equivalent), link your main JavaScript file which will import the SCSS file:

<script type="module" src="/src/main.js"></script>

In main.js, import your SCSS file:

import './styles.scss';
// Your JavaScript code

Step 6: Running the Development Server

Run the Vite development server:

npm run dev

Vite will automatically compile and serve your SCSS and JavaScript files.

Step 7: Building for Production

To combine and minify your SCSS and JavaScript files for production, run:

npm run build

Vite processes your files, combining and minifying them into efficient, production-ready assets in the dist directory.

Setting up Vite in your project to handle SCSS and JavaScript files not only streamlines your development process but also significantly enhances the performance of your final product. With Vite's fast build times and efficient asset handling, you can focus more on development and less on the intricacies of optimization.