initial implementation of bootstrap v5, purgecss, postcss, autoprefixer

assets/css/app.scss

@@ -1,5 +1,5 @@
-/* This file is for your main application css. */
-@import "./phoenix.css";
+/* Bootstrap v5 */
+@import "~bootstrap/scss/bootstrap";
 
 /* LiveView specific classes for your customizations */
 .phx-no-feedback.invalid-feedback,
@@ -55,30 +55,6 @@
 }
 
 /* Alerts and form errors */
-.alert {
-  padding: 15px;
-  margin-bottom: 20px;
-  border: 1px solid transparent;
-  border-radius: 4px;
-}
-.alert-info {
-  color: #31708f;
-  background-color: #d9edf7;
-  border-color: #bce8f1;
-}
-.alert-warning {
-  color: #8a6d3b;
-  background-color: #fcf8e3;
-  border-color: #faebcc;
-}
-.alert-danger {
-  color: #a94442;
-  background-color: #f2dede;
-  border-color: #ebccd1;
-}
-.alert p {
-  margin-bottom: 0;
-}
 .alert:empty {
   display: none;
 }

assets/js/app.js

@@ -17,6 +17,11 @@ import { Socket } from "phoenix";
 import topbar from "topbar";
 import { LiveSocket } from "phoenix_live_view";
 
+// Bootstrap v5 js imports
+import Collapse from "bootstrap/js/dist/collapse";
+import Dropdown from "bootstrap/js/dist/dropdown";
+
+// LiveSocket setup
 let csrfToken = document
   .querySelector("meta[name='csrf-token']")
   .getAttribute("content");

assets/package.json

@@ -7,6 +7,8 @@
     "watch": "webpack --mode development --watch"
   },
   "dependencies": {
+    "@popperjs/core": "^2.8.4",
+    "bootstrap": "^5.0.0-beta2",
     "phoenix": "file:../deps/phoenix",
     "phoenix_html": "file:../deps/phoenix_html",
     "phoenix_live_view": "file:../deps/phoenix_live_view",
@@ -15,11 +17,17 @@
   "devDependencies": {
     "@babel/core": "^7.x",
     "@babel/preset-env": "^7.x",
+    "autoprefixer": "^10.2.4",
     "babel-loader": "^8.x",
     "copy-webpack-plugin": "^7.x",
     "css-loader": "^5.x",
     "css-minimizer-webpack-plugin": "^1.x",
+    "glob-all": "^3.2.1",
     "mini-css-extract-plugin": "^1.x",
+    "postcss": "^8.2.6",
+    "postcss-loader": "^5.0.0",
+    "postcss-scss": "^3.0.4",
+    "purgecss-webpack-plugin": "^4.0.2",
     "sass": "^1.x",
     "sass-loader": "^10.x",
     "webpack": "^5.x",

assets/postcss.config.js

@@ -0,0 +1,5 @@
+module.exports = {
+  parser: require("postcss-scss"),
+
+  plugins: [require("autoprefixer")],
+};

assets/webpack.config.js

@@ -1,8 +1,9 @@
 const path = require("path");
-const glob = require("glob");
+const glob = require("glob-all");
 const MiniCssExtractPlugin = require("mini-css-extract-plugin");
 const CssMinimizerPlugin = require("css-minimizer-webpack-plugin");
 const CopyWebpackPlugin = require("copy-webpack-plugin");
+const PurgecssPlugin = require("purgecss-webpack-plugin");
 
 module.exports = (env, options) => {
   const devMode = options.mode !== "production";
@@ -27,7 +28,12 @@ module.exports = (env, options) => {
         },
         {
           test: /\.[s]?css$/,
-          use: [MiniCssExtractPlugin.loader, "css-loader", "sass-loader"],
+          use: [
+            MiniCssExtractPlugin.loader,
+            "css-loader",
+            "sass-loader",
+            "postcss-loader",
+          ],
         },
       ],
     },
@@ -36,7 +42,22 @@ module.exports = (env, options) => {
       new CopyWebpackPlugin({
         patterns: [{ from: "static/", to: "../" }],
       }),
-    ],
+    ].concat(
+      devMode
+        ? []
+        : [
+            new PurgecssPlugin({
+              paths: glob.sync([
+                "../**/*.html.leex",
+                "../**/*.html.eex",
+                "../**/views/**/*.ex",
+                "../**/live/**/*.ex",
+                "./js/**/*.js",
+              ]),
+              safelist: [/phx/, /topbar/],
+            }),
+          ]
+    ),
     optimization: {
       minimizer: ["...", new CssMinimizerPlugin()],
     },