The role of Webpack5 CopyPlugin

In Webpack 5, CopyPlugin is a plugin to copy a file or directory from a source location into a build directory. Its role is to help developers copy static files (such as pictures, fonts, etc.) directly to the output directory during the build process without any processing.

CopyPlugin is not necessary, its use is related to specific project requirements. If your project needs to copy some static resources to the build directory, you can use CopyPlugin to complete this task.

Here is an example configuration using CopyPlugin:

const CopyPlugin = require('copy-webpack-plugin');

module.exports = {
    
    
  // 其他配置项...
  plugins: [
    new CopyPlugin({
    
    
      patterns: [
        {
    
     from: 'src/images', to: 'images' }, // 将 src/images 下的文件复制到构建目录的 images 文件夹下
        {
    
     from: 'src/fonts', to: 'fonts' }, // 将 src/fonts 下的文件复制到构建目录的 fonts 文件夹下
      ],
    }),
  ],
};

In the above example, by configuring the patterns option of CopyPlugin, src/imagesthe files in the directory are copied to imagesthe directory of the output directory, and src/fontsthe files in the directory are copied to fontsthe directory of the output directory.

Summary: The function of CopyPlugin is to copy files or directories to the build directory, which depends on the project requirements and is not a necessary plug-in.