Exploring Vue and Webpack's tree shaking functionality, side effects management, and its impact on CSS: Loading unused component CSS

Question

Exploring Vue and Webpack's tree shaking functionality, side effects management, and its impact on CSS: Loading unused component CSS

We are currently grappling with the challenge of effectively implementing tree shaking for CSS within Vue Single File Components using Webpack.

Within our package.json file, we have specified:

"sideEffects": ["*.css", "*.less","*.vue"]

, which appears to be successfully preventing unnecessary loading of Vue components. However, we are encountering the issue where every <style> tag from the SFCs is still being loaded on the page.

The method by which we load our SFCs involves an NPM package listing numerous exports, such as:

export blah from 'blah.vue';
export blah2 from 'blah2.vue';
export blah3 from 'blah3.vue';

Even if our JavaScript only contains

import { blah3 } from 'a-npm-package';

, it includes styles from all three components. Given that we have a considerable number of Vue components, this results in a surplus of unused CSS cluttering the page.

How can we address this issue? Surely there must be a more efficient and dynamic approach to handling styles rather than indiscriminately injecting them all into the page, especially when only a fraction of them are actually utilized?

Thank you for any insights or guidance.

css vue.js webpack vuejs2

Answer 1

Answer №1

If you're looking to optimize your CSS, consider using the MiniCssExtractPlugin in your webpack configuration. This plugin allows you to tree shake CSS and if you're working with scss or sass, you can easily incorporate those loaders as well.

// Optimize CSS with MiniCssExtractPlugin
const path = require('path')
const MiniCssExtractPlugin = require('mini-css-extract-plugin')

module.exports = {
  mode: 'production',

  entry: path.resolve('src/index.js'),

  output: {
    filename: '[name].js',
    path: path.resolve('dist'),
  },

  module: {
    rules: [
      {
        test: /\.jsx?$/,
        loader: 'babel-loader',
        exclude: /node_modules/,
      },
      {
        // Apply MiniCssExtractPlugin for CSS optimization
        test: /\.css$/,
        exclude: /node_modules/,
        use: [
          // Extract the css to file
          MiniCssExtractPlugin.loader,
          // Handle import of `.css` files in your app
          'css-loader',
        ],
      },
    ],
  },
  plugins: [
    // Extract all css into a separate file
    new MiniCssExtractPlugin({
      filename: '[name].css',
    }),
  ],
}

Answer 2

If you're looking to optimize your CSS, consider using the MiniCssExtractPlugin in your webpack configuration. This plugin allows you to tree shake CSS and if you're working with scss or sass, you can easily incorporate those loaders as well.

// Optimize CSS with MiniCssExtractPlugin
const path = require('path')
const MiniCssExtractPlugin = require('mini-css-extract-plugin')

module.exports = {
  mode: 'production',

  entry: path.resolve('src/index.js'),

  output: {
    filename: '[name].js',
    path: path.resolve('dist'),
  },

  module: {
    rules: [
      {
        test: /\.jsx?$/,
        loader: 'babel-loader',
        exclude: /node_modules/,
      },
      {
        // Apply MiniCssExtractPlugin for CSS optimization
        test: /\.css$/,
        exclude: /node_modules/,
        use: [
          // Extract the css to file
          MiniCssExtractPlugin.loader,
          // Handle import of `.css` files in your app
          'css-loader',
        ],
      },
    ],
  },
  plugins: [
    // Extract all css into a separate file
    new MiniCssExtractPlugin({
      filename: '[name].css',
    }),
  ],
}

Answer 3

Answer №2

Have you ever considered implementing lazy loading for components?

By using lazy loading, components with the style tag will only load when necessary.

You can also apply lazy loading to routes by checking out lazy loading routes.

Answer 4

Have you ever considered implementing lazy loading for components?

By using lazy loading, components with the style tag will only load when necessary.

You can also apply lazy loading to routes by checking out lazy loading routes.

Answer 5

Answer №3

To reduce clutter in your code, consider lazy-loading components when they are not always needed.

For example:

const MyComponent = () => import(/* webpackChunkName: "MyComponent" */'../components/MyComponent');

Check out this resource for more information on dynamic imports in Vue.js and how they can improve performance:

Incorporating plugins like MiniCSSExtractPlugin into your Webpack configuration can also help manage bulky code more effectively.

Answer 6

To reduce clutter in your code, consider lazy-loading components when they are not always needed.

For example:

const MyComponent = () => import(/* webpackChunkName: "MyComponent" */'../components/MyComponent');

Check out this resource for more information on dynamic imports in Vue.js and how they can improve performance:

Incorporating plugins like MiniCSSExtractPlugin into your Webpack configuration can also help manage bulky code more effectively.

Exploring Vue and Webpack's tree shaking functionality, side effects management, and its impact on CSS: Loading unused component CSS

Answer №1

Answer №2

Answer №3

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