use purgecss for much smaller css

assets/package-lock.json

@@ -17,6 +17,7 @@
         "topbar": "^1.x"
       },
       "devDependencies": {
+        "@fullhuman/postcss-purgecss": "^5.0.0",
         "@types/node": "^18.6.5",
         "@types/phoenix": "^1.5.4",
         "autoprefixer": "^10.4.13",
@@ -383,6 +384,18 @@
       "resolved": "https://registry.npmjs.org/@fontsource/lato/-/lato-4.5.10.tgz",
       "integrity": "sha512-2hYR6r661Cq9B8zugtu6yxuOKqrVhAgfOSaPSq8XoxbC4ebsl0KOTy/vPoP+9U7JuQVLfrmikirW4a9Z0nDUug=="
     },
+    "node_modules/@fullhuman/postcss-purgecss": {
+      "version": "5.0.0",
+      "resolved": "https://registry.npmjs.org/@fullhuman/postcss-purgecss/-/postcss-purgecss-5.0.0.tgz",
+      "integrity": "sha512-onDS/b/2pMRzqSoj4qOs2tYFmOpaspjTAgvACIHMPiicu1ptajiBruTrjBzTKdxWdX0ldaBb7wj8nEaTLyFkJw==",
+      "dev": true,
+      "dependencies": {
+        "purgecss": "^5.0.0"
+      },
+      "peerDependencies": {
+        "postcss": "^8.0.0"
+      }
+    },
     "node_modules/@popperjs/core": {
       "version": "2.11.6",
       "resolved": "https://registry.npmjs.org/@popperjs/core/-/core-2.11.6.tgz",
@@ -460,6 +473,12 @@
         "postcss": "^8.1.0"
       }
     },
+    "node_modules/balanced-match": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-1.0.2.tgz",
+      "integrity": "sha512-3oSeUO0TMV67hN1AmbXsK4yaqU7tjiHlbxRDZOpH0KW9+CeX4bRAaX0Anxt0tx2MrpRpWwQaPwIlISEJhYU5Pw==",
+      "dev": true
+    },
     "node_modules/binary-extensions": {
       "version": "2.2.0",
       "resolved": "https://registry.npmjs.org/binary-extensions/-/binary-extensions-2.2.0.tgz",
@@ -498,6 +517,15 @@
       "resolved": "https://registry.npmjs.org/bootstrap-icons/-/bootstrap-icons-1.10.3.tgz",
       "integrity": "sha512-7Qvj0j0idEm/DdX9Q0CpxAnJYqBCFCiUI6qzSPYfERMcokVuV9Mdm/AJiVZI8+Gawe4h/l6zFcOzvV7oXCZArw=="
     },
+    "node_modules/brace-expansion": {
+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-2.0.1.tgz",
+      "integrity": "sha512-XnAIvQ8eM+kC6aULx6wuQiwVsnzsi9d3WxzV3FpWTGA19F621kwdbsAcFKXgKUHZWsy+mY6iL1sHTxWEFCytDA==",
+      "dev": true,
+      "dependencies": {
+        "balanced-match": "^1.0.0"
+      }
+    },
     "node_modules/braces": {
       "version": "3.0.2",
       "resolved": "https://registry.npmjs.org/braces/-/braces-3.0.2.tgz",
@@ -902,6 +930,12 @@
         "url": "https://www.patreon.com/infusion"
       }
     },
+    "node_modules/fs.realpath": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/fs.realpath/-/fs.realpath-1.0.0.tgz",
+      "integrity": "sha512-OO0pH2lK6a0hZnAdau5ItzHPI6pUlvI7jMVnxUQRtw4owF2wk8lOSabtGDCTP4Ggrg2MbGnWO9X8K1t4+fGMDw==",
+      "dev": true
+    },
     "node_modules/fsevents": {
       "version": "2.3.2",
       "resolved": "https://registry.npmjs.org/fsevents/-/fsevents-2.3.2.tgz",
@@ -922,6 +956,25 @@
       "integrity": "sha512-yIovAzMX49sF8Yl58fSCWJ5svSLuaibPxXQJFLmBObTuCr0Mf1KiPopGM9NiFjiYBCbfaa2Fh6breQ6ANVTI0A==",
       "dev": true
     },
+    "node_modules/glob": {
+      "version": "8.1.0",
+      "resolved": "https://registry.npmjs.org/glob/-/glob-8.1.0.tgz",
+      "integrity": "sha512-r8hpEjiQEYlF2QU0df3dS+nxxSIreXQS1qRhMJM0Q5NDdR386C7jb7Hwwod8Fgiuex+k0GFjgft18yvxm5XoCQ==",
+      "dev": true,
+      "dependencies": {
+        "fs.realpath": "^1.0.0",
+        "inflight": "^1.0.4",
+        "inherits": "2",
+        "minimatch": "^5.0.1",
+        "once": "^1.3.0"
+      },
+      "engines": {
+        "node": ">=12"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/isaacs"
+      }
+    },
     "node_modules/glob-parent": {
       "version": "5.1.2",
       "resolved": "https://registry.npmjs.org/glob-parent/-/glob-parent-5.1.2.tgz",
@@ -957,6 +1010,22 @@
       "integrity": "sha512-fTMKDwtbvO5tldky9QZ2fMX7slR0mYpY5nbnFWYp0fOzDhHqhgIw9KoYgxLWsoNTS9ZHGauHj18DTyEw6BK3Og==",
       "dev": true
     },
+    "node_modules/inflight": {
+      "version": "1.0.6",
+      "resolved": "https://registry.npmjs.org/inflight/-/inflight-1.0.6.tgz",
+      "integrity": "sha512-k92I/b08q4wvFscXCLvqfsHCrjrF7yiXsQuIVvVE7N82W3+aqpzuUdBbfhWcy/FZR3/4IgflMgKLOsvPDrGCJA==",
+      "dev": true,
+      "dependencies": {
+        "once": "^1.3.0",
+        "wrappy": "1"
+      }
+    },
+    "node_modules/inherits": {
+      "version": "2.0.4",
+      "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.4.tgz",
+      "integrity": "sha512-k/vGaX4/Yla3WzyMCvTQOXYeIHvqOKtnqBduzTHpzpQZzAskKMhZ2K+EnBiSM9zGSoIFeMpXKxa4dYeZIQqewQ==",
+      "dev": true
+    },
     "node_modules/is-binary-path": {
       "version": "2.1.0",
       "resolved": "https://registry.npmjs.org/is-binary-path/-/is-binary-path-2.1.0.tgz",
@@ -1038,6 +1107,18 @@
       "integrity": "sha512-dn6wd0uw5GsdswPFfsgMp5NSB0/aDe6fK94YJV/AJDYXL6HVLWBsxeq7js7Ad+mU2K9LAlwpk6kN2D5mwCPVow==",
       "dev": true
     },
+    "node_modules/minimatch": {
+      "version": "5.1.6",
+      "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-5.1.6.tgz",
+      "integrity": "sha512-lKwV/1brpG6mBUFHtb7NUmtABCb2WZZmm2wNiOA5hAb8VdCS4B3dtMWyvcoViccwAW/COERjXLt0zP1zXUN26g==",
+      "dev": true,
+      "dependencies": {
+        "brace-expansion": "^2.0.1"
+      },
+      "engines": {
+        "node": ">=10"
+      }
+    },
     "node_modules/nanoid": {
       "version": "3.3.4",
       "resolved": "https://registry.npmjs.org/nanoid/-/nanoid-3.3.4.tgz",
@@ -1098,6 +1179,15 @@
         "url": "https://github.com/fb55/nth-check?sponsor=1"
       }
     },
+    "node_modules/once": {
+      "version": "1.4.0",
+      "resolved": "https://registry.npmjs.org/once/-/once-1.4.0.tgz",
+      "integrity": "sha512-lNaJgI+2Q5URQBkccEKHTQOPaXdUxnZZElQTZY0MFUAuaEqe1E+Nyvgdz/aIyNi6Z9MzO5dv1H8n58/GELp3+w==",
+      "dev": true,
+      "dependencies": {
+        "wrappy": "1"
+      }
+    },
     "node_modules/path-parse": {
       "version": "1.0.7",
       "resolved": "https://registry.npmjs.org/path-parse/-/path-parse-1.0.7.tgz",
@@ -1586,6 +1676,30 @@
       "integrity": "sha512-1NNCs6uurfkVbeXG4S8JFT9t19m45ICnif8zWLd5oPSZ50QnwMfK+H3jv408d4jw/7Bttv5axS5IiHoLaVNHeQ==",
       "dev": true
     },
+    "node_modules/purgecss": {
+      "version": "5.0.0",
+      "resolved": "https://registry.npmjs.org/purgecss/-/purgecss-5.0.0.tgz",
+      "integrity": "sha512-RAnuxrGuVyLLTr8uMbKaxDRGWMgK5CCYDfRyUNNcaz5P3kGgD2b7ymQGYEyo2ST7Tl/ScwFgf5l3slKMxHSbrw==",
+      "dev": true,
+      "dependencies": {
+        "commander": "^9.0.0",
+        "glob": "^8.0.3",
+        "postcss": "^8.4.4",
+        "postcss-selector-parser": "^6.0.7"
+      },
+      "bin": {
+        "purgecss": "bin/purgecss.js"
+      }
+    },
+    "node_modules/purgecss/node_modules/commander": {
+      "version": "9.5.0",
+      "resolved": "https://registry.npmjs.org/commander/-/commander-9.5.0.tgz",
+      "integrity": "sha512-KRs7WVDKg86PWiuAqhDrAQnTXZKraVcCc6vFdL14qrZ/DcWwuRo7VoiYXalXO7S5GKpqYiVEwCbgFDfxNHKJBQ==",
+      "dev": true,
+      "engines": {
+        "node": "^12.20.0 || >=14"
+      }
+    },
     "node_modules/readdirp": {
       "version": "3.6.0",
       "resolved": "https://registry.npmjs.org/readdirp/-/readdirp-3.6.0.tgz",
@@ -1820,6 +1934,12 @@
         }
       }
     },
+    "node_modules/wrappy": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
+      "integrity": "sha512-l4Sp/DRseor9wL6EvV2+TuQn63dMkPjZ/sp9XkghTEbV9KlPS1xUsZ3u7/IQO4wxtcFB4bgpQPRcR3QCvezPcQ==",
+      "dev": true
+    },
     "node_modules/yaml": {
       "version": "1.10.2",
       "resolved": "https://registry.npmjs.org/yaml/-/yaml-1.10.2.tgz",

assets/package.json

@@ -9,6 +9,7 @@
     "preview": "vite preview"
   },
   "devDependencies": {
+    "@fullhuman/postcss-purgecss": "^5.0.0",
     "@types/node": "^18.6.5",
     "@types/phoenix": "^1.5.4",
     "autoprefixer": "^10.4.13",

assets/postcss.config.cjs

@@ -1,5 +1,24 @@
+const autoprefixer = require('autoprefixer')
+const purgecss = require('@fullhuman/postcss-purgecss')
+const cssnano = require('cssnano')
+
 module.exports = {
-  plugins: [require("autoprefixer"),require('cssnano')({
+  plugins: [
+    autoprefixer,
+    purgecss({
+      content: [
+        "./js/**/*.js",
+        "../lib/*_web.ex",
+        "../lib/*_web/**/*.*ex"
+      ],
+      safelist: {
+        deep: [
+          /^phx/
+        ]
+      },
+    }),
+    cssnano({
       preset: 'default',
-  })],
+    })
+  ],
 };