Add UnusedFilesWebpackPlugin to detect unused files

package.json

@@ -129,6 +129,7 @@
     "ts-jest": "^26.4.1",
     "typescript": "^4.0.3",
     "uglifyjs-webpack-plugin": "^2.2.0",
+    "unused-files-webpack-plugin": "^3.4.0",
     "uuid": "^8.0.0",
     "webpack": "^4.41.2",
     "webpack-assets-manifest": "^3.1.1",

webpack/shared.js

@@ -6,6 +6,7 @@ const MiniCssExtractPlugin = require('mini-css-extract-plugin');
 const AssetsManifestPlugin = require('webpack-assets-manifest');
 const HtmlWebpackPlugin = require('html-webpack-plugin');
 const HtmlWebpackHarddiskPlugin = require('html-webpack-harddisk-plugin');
+const { UnusedFilesWebpackPlugin } = require('unused-files-webpack-plugin');
 const { env, settings, output } = require('./configuration');
 const rules = require('./rules');
 
@@ -66,6 +67,13 @@ module.exports = {
       writeToDisk: true,
       publicPath: true,
     }),
+    // https://www.npmjs.com/package/unused-files-webpack-plugin#options
+    new UnusedFilesWebpackPlugin({
+      patterns: ['app/**/*.*'],
+      globOptions: {
+        ignore: ['node_modules/**/*', '**/__*__/**/*'],
+      },
+    }),
     // https://github.com/ampedandwired/html-webpack-plugin
     new HtmlWebpackPlugin({
       template: 'app/index.ejs',

yarn.lock

@@ -2778,6 +2778,14 @@ babel-runtime@^6.26.0:
     core-js "^2.4.0"
     regenerator-runtime "^0.11.0"
 
+babel-runtime@^7.0.0-beta.3:
+  version "7.0.0-beta.3"
+  resolved "https://registry.yarnpkg.com/babel-runtime/-/babel-runtime-7.0.0-beta.3.tgz#7c750de5514452c27612172506b49085a4a630f2"
+  integrity sha512-jlzZ8RACjt0QGxq+wqsw5bCQE9RcUyWpw987mDY3GYxTpOQT2xoyNoG++oVCHzr/nACLBIprfVBNvv/If1ZYcg==
+  dependencies:
+    core-js "^2.4.0"
+    regenerator-runtime "^0.11.0"
+
 backoff@^2.4.1:
   version "2.5.0"
   resolved "https://registry.yarnpkg.com/backoff/-/backoff-2.5.0.tgz#f616eda9d3e4b66b8ca7fca79f695722c5f8e26f"
@@ -5570,6 +5578,14 @@ getpass@^0.1.1:
   dependencies:
     assert-plus "^1.0.0"
 
+glob-all@^3.1.0:
+  version "3.2.1"
+  resolved "https://registry.yarnpkg.com/glob-all/-/glob-all-3.2.1.tgz#082ca81afd2247cbd3ed2149bb2630f4dc877d95"
+  integrity sha512-x877rVkzB3ipid577QOp+eQCR6M5ZyiwrtaYgrX/z3EThaSPFtLDwBXFHc3sH1cG0R0vFYI5SRYeWMMSEyXkUw==
+  dependencies:
+    glob "^7.1.2"
+    yargs "^15.3.1"
+
 glob-parent@^3.1.0:
   version "3.1.0"
   resolved "https://registry.yarnpkg.com/glob-parent/-/glob-parent-3.1.0.tgz#9e6af6299d8d3bd2bd40430832bd113df906c5ae"
@@ -12211,6 +12227,17 @@ unset-value@^1.0.0:
     has-value "^0.3.1"
     isobject "^3.0.0"
 
+unused-files-webpack-plugin@^3.4.0:
+  version "3.4.0"
+  resolved "https://registry.yarnpkg.com/unused-files-webpack-plugin/-/unused-files-webpack-plugin-3.4.0.tgz#adc67a3b5549d028818d3119cbf2b5c88aea8670"
+  integrity sha512-cmukKOBdIqaM1pqThY0+jp+mYgCVyzrD8uRbKEucQwIGZcLIRn+gSRiQ7uLjcDd3Zba9NUxVGyYa7lWM4UCGeg==
+  dependencies:
+    babel-runtime "^7.0.0-beta.3"
+    glob-all "^3.1.0"
+    semver "^5.5.0"
+    util.promisify "^1.0.0"
+    warning "^3.0.0"
+
 upath@^1.1.1:
   version "1.1.2"
   resolved "https://registry.yarnpkg.com/upath/-/upath-1.1.2.tgz#3db658600edaeeccbe6db5e684d67ee8c2acd068"