From f3fe848f0b9c9f946c83c42dc0d9f92799a16cea Mon Sep 17 00:00:00 2001
From: He Yeshuang <yeshuanghe@gmail.com>
Date: Mon, 30 Mar 2020 23:42:37 +0800
Subject: add purgecss(but didnt test)

---
 package-lock.json   | 66 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 package.json        |  1 +
 postcss.config.js   | 21 ++++++++++++++++-
 src/sass/style.scss |  2 ++
 4 files changed, 89 insertions(+), 1 deletion(-)

diff --git a/package-lock.json b/package-lock.json
index bffda00..a80b43b 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1078,6 +1078,35 @@
         }
       }
     },
+    "@fullhuman/postcss-purgecss": {
+      "version": "2.1.0",
+      "resolved": "https://registry.npm.taobao.org/@fullhuman/postcss-purgecss/download/@fullhuman/postcss-purgecss-2.1.0.tgz",
+      "integrity": "sha1-lV/C4/abDQyENn7u5PhcASOKZdw=",
+      "dev": true,
+      "requires": {
+        "postcss": "7.0.27",
+        "purgecss": "^2.1.0"
+      },
+      "dependencies": {
+        "postcss": {
+          "version": "7.0.27",
+          "resolved": "https://registry.npm.taobao.org/postcss/download/postcss-7.0.27.tgz?cache=0&sync_timestamp=1581994906320&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Fpostcss%2Fdownload%2Fpostcss-7.0.27.tgz",
+          "integrity": "sha1-zGfNxrDao3UQW3xCSoVWc0X8VNk=",
+          "dev": true,
+          "requires": {
+            "chalk": "^2.4.2",
+            "source-map": "^0.6.1",
+            "supports-color": "^6.1.0"
+          }
+        },
+        "source-map": {
+          "version": "0.6.1",
+          "resolved": "http://registry.npm.taobao.org/source-map/download/source-map-0.6.1.tgz",
+          "integrity": "sha1-dHIq8y6WFOnCh6jQu95IteLxomM=",
+          "dev": true
+        }
+      }
+    },
     "@hapi/address": {
       "version": "2.1.4",
       "resolved": "https://registry.npm.taobao.org/@hapi/address/download/@hapi/address-2.1.4.tgz?cache=0&sync_timestamp=1584171913757&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2F%40hapi%2Faddress%2Fdownload%2F%40hapi%2Faddress-2.1.4.tgz",
@@ -7458,6 +7487,43 @@
       "integrity": "sha512-XRsRjdf+j5ml+y/6GKHPZbrF/8p2Yga0JPtdqTIY2Xe5ohJPD9saDJJLPvp9+NSBprVvevdXZybnj2cv8OEd0A==",
       "dev": true
     },
+    "purgecss": {
+      "version": "2.1.0",
+      "resolved": "https://registry.npm.taobao.org/purgecss/download/purgecss-2.1.0.tgz",
+      "integrity": "sha1-baZV0WYHOCTv4lMrDGRmx0DZOdY=",
+      "dev": true,
+      "requires": {
+        "commander": "^4.0.0",
+        "glob": "^7.0.0",
+        "postcss": "7.0.27",
+        "postcss-selector-parser": "^6.0.2"
+      },
+      "dependencies": {
+        "commander": {
+          "version": "4.1.1",
+          "resolved": "https://registry.npm.taobao.org/commander/download/commander-4.1.1.tgz?cache=0&sync_timestamp=1584148356834&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Fcommander%2Fdownload%2Fcommander-4.1.1.tgz",
+          "integrity": "sha1-n9YCvZNilOnp70aj9NaWQESxgGg=",
+          "dev": true
+        },
+        "postcss": {
+          "version": "7.0.27",
+          "resolved": "https://registry.npm.taobao.org/postcss/download/postcss-7.0.27.tgz?cache=0&sync_timestamp=1581994906320&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Fpostcss%2Fdownload%2Fpostcss-7.0.27.tgz",
+          "integrity": "sha1-zGfNxrDao3UQW3xCSoVWc0X8VNk=",
+          "dev": true,
+          "requires": {
+            "chalk": "^2.4.2",
+            "source-map": "^0.6.1",
+            "supports-color": "^6.1.0"
+          }
+        },
+        "source-map": {
+          "version": "0.6.1",
+          "resolved": "http://registry.npm.taobao.org/source-map/download/source-map-0.6.1.tgz",
+          "integrity": "sha1-dHIq8y6WFOnCh6jQu95IteLxomM=",
+          "dev": true
+        }
+      }
+    },
     "q": {
       "version": "1.5.1",
       "resolved": "http://registry.npm.taobao.org/q/download/q-1.5.1.tgz",
diff --git a/package.json b/package.json
index 0ee4d00..87a023a 100755
--- a/package.json
+++ b/package.json
@@ -21,6 +21,7 @@
   "devDependencies": {
     "@babel/core": "^7.9.0",
     "@babel/preset-env": "^7.9.0",
+    "@fullhuman/postcss-purgecss": "^2.1.0",
     "autoprefixer": "^9.7.5",
     "babel-loader": "^8.1.0",
     "css-loader": "^3.4.2",
diff --git a/postcss.config.js b/postcss.config.js
index a8dc3e9..60bcb4a 100644
--- a/postcss.config.js
+++ b/postcss.config.js
@@ -1,6 +1,25 @@
+const purgecss = require('@fullhuman/postcss-purgecss')({
+
+    // Specify the paths to all of the template files in your project 
+    content: [
+      './src/**/*.html',
+      './src/**/*.vue',
+      './src/**/*.js',
+      './layouts/*.html',
+      './layouts/**/*.html'
+      // etc.
+    ],
+  
+    // Include any special characters you're using in this regular expression
+    defaultExtractor: content => content.match(/[\w-/:]+(?<!:)/g) || []
+  })
+
 module.exports = {
     plugins: [
         require('tailwindcss'),
-        require('autoprefixer')
+        require('autoprefixer'),
+        ...process.env.NODE_ENV === 'production'
+        ? [purgecss]
+        : []
     ]
 }
\ No newline at end of file
diff --git a/src/sass/style.scss b/src/sass/style.scss
index ef9511a..e57a0ab 100644
--- a/src/sass/style.scss
+++ b/src/sass/style.scss
@@ -1,6 +1,8 @@
 // @import "normalize";
+/* purgecss start ignore */
 @import "tailwindcss/base";
 
 @import "tailwindcss/components";
+/* purgecss end ignore */
 
 @import "tailwindcss/utilities";
\ No newline at end of file
-- 
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