Ditching Unnecessary Attributes: Auto-Removing type="module" and crossorigin in Vite <script> Tags
Vite, the blazing-fast development server for modern web projects, often injects attributes like type="module" and crossorigin into <script> tags. While these attributes are usually beneficial, they can sometimes be redundant, leading to unnecessary code bloat and potential conflicts.
This article dives into how to streamline your Vite setup by automatically removing these attributes when they're not needed.
The Scenario: Redundant Attributes in <script> Tags
Imagine you're building a Vite project with a simple JavaScript file (main.js):
<!DOCTYPE html>
<html>
<head>
<title>My Vite Project</title>
</head>
<body>
<script type="module" crossorigin src="/src/main.js"></script>
</body>
</html>
Vite automatically inserts type="module" and crossorigin into the <script> tag. However, these attributes might already be set in your project's configuration or explicitly declared in the HTML itself. In such cases, Vite's default behavior leads to redundancy.
The Solution: Tailoring Vite's Behavior
Vite offers a flexible way to customize its behavior. Here are two approaches to automatically remove unnecessary attributes:
1. Using the optimizeDeps Configuration:
The optimizeDeps configuration option allows you to specify how Vite should handle dependencies. By setting the include property to an empty array, you tell Vite to skip optimization for all dependencies. This prevents Vite from injecting type="module" and crossorigin attributes into your <script> tags.
// vite.config.js
export default defineConfig({
optimizeDeps: {
include: []
}
});
This approach is suitable for projects where you want complete control over the <script> attributes and don't require Vite's dependency optimization features.
2. Customizing the HTML Plugin:
Vite's HTML plugin enables you to manipulate the generated HTML before it's served. You can use the plugin's transform option to remove the attributes you don't need.
// vite.config.js
import { defineConfig } from 'vite';
export default defineConfig({
plugins: [
{
transformIndexHtml: (html) => {
return html.replace(/<script.*?type="module".*?>/g, '<script>');
}
}
]
});
This example removes the type="module" attribute from all <script> tags. You can customize the regex to target specific attributes or combine it with the optimizeDeps approach for a more granular control.
Conclusion: Streamlining Your Vite Workflow
By removing unnecessary attributes from your <script> tags, you can ensure cleaner HTML, optimize your project's performance, and reduce potential conflicts. Both the optimizeDeps and HTML plugin approaches provide flexible ways to tailor Vite's behavior according to your project's specific needs. Choose the approach that best suits your workflow and enjoy a streamlined Vite experience.
