As of my last update in September 2021, there isn't an official Webpack War plugin specifically designed for Webpack v5. The existing "webpack-war-plugin" is primarily intended for use with Webpack v4.

However, you can still generate a WAR (Web Application Archive) file using Webpack v5 by combining other tools that can package your build output into a WAR format. One popular tool for this purpose is "war" - a Node.js library to generate WAR files.

To use "war" with Webpack v5, follow these steps:

  1. Install the required packages:
npm install war
  1. Update your Webpack configuration to generate the build output:
const path = require('path'); const WarPlugin = require('war'); module.exports = { // Your Webpack configuration options here... // Make sure to set the mode, entry, output, and other required options. plugins: [ // Other plugins... new WarPlugin({ archiveName: 'my-app', // Specify the name of the WAR file. webInf: path.resolve(__dirname, 'path/to/WEB-INF'), // Path to your WEB-INF folder containing web.xml (optional). }), ], };
  1. Build your project using Webpack:
npx webpack
  1. After the build is complete, you should find the WAR file (my-app.war) in your Webpack output directory.

Please note that using external plugins like "war" might require additional configuration to handle complex project structures properly. Ensure that your project structure aligns with the expectations of the "war" tool or any other custom WAR generator you use.

Additionally, as Webpack evolves, new plugins may be developed to handle WAR generation directly within Webpack v5 or later versions. Be sure to check for any new plugins that may become available in the future. Always refer to the documentation and repository of the specific plugins you use to ensure compatibility and optimal functionality.

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