Add banner to CSS output

package.json

@@ -50,6 +50,7 @@
     "node-sass": "^4.13.1",
     "np": "^6.2.0",
     "npm-run-all": "^4.1.5",
+    "postcss-banner": "^3.0.1",
     "rollup": "^1.32.1",
     "rollup-plugin-license": "^0.13.0",
     "rollup-plugin-postcss": "^2.5.0",

rollup/plugins.js

@@ -1,3 +1,6 @@
+import path from 'path';
+
+import postcssPluginBanner from 'postcss-banner';
 import postcssPluginCssnano from 'cssnano';
 import rollupPluginLicense from 'rollup-plugin-license';
 import rollupPluginPostcss from 'rollup-plugin-postcss';
@@ -5,10 +8,14 @@ import rollupPluginStrip from '@rollup/plugin-strip';
 import { terser as rollupPluginTerser } from 'rollup-plugin-terser';
 import rollupPluginTypescript from '@rollup/plugin-typescript';
 
+const pkg = require(path.join(process.cwd(), 'package.json'));
+const bannerText = `${pkg.name} v${pkg.version} by Nikita Karamov
+${pkg.homepage}`;
+
 export const license = () => rollupPluginLicense({
   banner: {
     commentStyle: 'ignored',
-    content: '<%= pkg.name %> v<%= pkg.version %> by Nikita Karamov\nhttps://shareon.js.org'
+    content: bannerText
   }
 });
 
@@ -21,6 +28,10 @@ export const postcss = (file = true, minify) => rollupPluginPostcss({
   plugins: [
     minify && postcssPluginCssnano({
       preset: 'default',
+    }),
+    postcssPluginBanner({
+      banner: bannerText,
+      important: true
     })
   ],
 });

yarn.lock

@@ -5196,6 +5196,13 @@ posix-character-classes@^0.1.0:
   resolved "https://registry.yarnpkg.com/posix-character-classes/-/posix-character-classes-0.1.1.tgz#01eac0fe3b5af71a2a6c02feabb8c1fef7e00eab"
   integrity sha1-AerA/jta9xoqbAL+q7jB/vfgDqs=
 
+postcss-banner@^3.0.1:
+  version "3.0.1"
+  resolved "https://registry.yarnpkg.com/postcss-banner/-/postcss-banner-3.0.1.tgz#130ec592cefd3f5b52bc54f7f01c8881603c22fc"
+  integrity sha512-uHZoJ5VmnqHAMGHJU8KJHrkLuynp72N9PPn1T4f0iVBDoApsOkr1OmY4Mk0t2e5lNfrDgOUNEBHj8RbYa8zvbw==
+  dependencies:
+    postcss "^7.0.14"
+
 postcss-calc@^7.0.1:
   version "7.0.2"
   resolved "https://registry.yarnpkg.com/postcss-calc/-/postcss-calc-7.0.2.tgz#504efcd008ca0273120568b0792b16cdcde8aac1"