Replace cssnano with csso (#807)

Closes #806.
mapbox · Jul 2, 2017 · 66b2d9e · 66b2d9e
1 parent 2bddd56
commit 66b2d9e
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Showing 4 changed files with 26 additions and 363 deletions.
diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -1,6 +1,6 @@
 # Changelog
 
-## 0.13.1
+## 0.13.1-2
 
 - Fix syntax of Browserslist for Autoprefixer.
 

diff --git a/package.json b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@mapbox/assembly",
-  "version": "0.13.1",
+  "version": "0.13.2",
   "description": "A CSS framework",
   "main": "index.js",
   "scripts": {
@@ -39,7 +39,7 @@
     "autoprefixer": "^6.6.1",
     "concat-with-sourcemaps": "^1.0.4",
     "cp-file": "^4.1.1",
-    "cssnano": "^3.10.0",
+    "csso": "^3.1.1",
     "globby": "^6.1.0",
     "indent-string": "^3.1.0",
     "mkdirp": "^0.5.1",

diff --git a/scripts/build-css.js b/scripts/build-css.js
@@ -7,7 +7,7 @@ const mkdirp = require('mkdirp');
 const PQueue = require('p-queue');
 const Concat = require('concat-with-sourcemaps');
 const postcss = require('postcss');
-const cssnano = require('cssnano');
+const csso = require('csso');
 const reporter = require('postcss-reporter');
 const autoprefixer = require('autoprefixer');
 const initPostcssCustomProperties = require('postcss-custom-properties');
@@ -140,9 +140,8 @@ function buildCss(options) {
     const css = `${concat.content}\n/*# sourceMappingURL=${outfileFilename}.map */`;
 
     function writeMinifiedCss() {
-      return cssnano.process(css).then((minifiedCss) => {
-        pify(fs.writeFile)(outfile.replace('.css', '.min.css'), minifiedCss, 'utf8');
-      });
+      const minifiedCss = csso.minify(css).css;
+      return pify(fs.writeFile)(outfile.replace('.css', '.min.css'), minifiedCss, 'utf8');
     }
 
     return pify(mkdirp)(path.dirname(outfile)).then(() => {