Allow configuring cssnano

parcel-bundler · Jun 7, 2021 · 07160d3 · 07160d3
1 parent c06a16e
commit 07160d3
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Showing 2 changed files with 11 additions and 1 deletion.
diff --git a/packages/optimizers/cssnano/package.json b/packages/optimizers/cssnano/package.json
@@ -22,6 +22,7 @@
   "dependencies": {
     "@parcel/plugin": "2.0.0-beta.3.1",
     "@parcel/source-map": "2.0.0-rc.4",
+    "@parcel/utils": "2.0.0-beta.3.1",
     "cssnano": "^5.0.5",
     "postcss": "^8.3.0"
   }

diff --git a/packages/optimizers/cssnano/src/CSSNanoOptimizer.js b/packages/optimizers/cssnano/src/CSSNanoOptimizer.js
@@ -4,6 +4,8 @@ import SourceMap from '@parcel/source-map';
 import {Optimizer} from '@parcel/plugin';
 import postcss from 'postcss';
 import cssnano from 'cssnano';
+import {loadConfig} from '@parcel/utils';
+import path from 'path';
 
 export default (new Optimizer({
   async optimize({
@@ -23,7 +25,14 @@ export default (new Optimizer({
       );
     }
 
-    const result = await postcss([cssnano]).process(prevContents, {
+    const userConfig = await loadConfig(
+      options.inputFS,
+      path.join(options.entryRoot, 'index'),
+      ['.cssnanorc ', 'cssnano.config.json', 'cssnano.config.js'],
+      options.projectRoot,
+    );
+
+    const result = await postcss([cssnano(userConfig)]).process(prevContents, {
       // Suppress postcss's warning about a missing `from` property. In this
       // case, the input map contains all of the sources.
       from: undefined,