Merge pull request #42 from smooth-code/tree-shaking

perf: improve tree shaking

Author: gregberge

babel.config.js

@@ -5,7 +5,7 @@ const getStyledEnginePlugins = () => {
     case 'emotion':
       return ['babel-plugin-emotion']
     case 'styled-components':
-      return []
+      return ['babel-plugin-styled-components']
     default:
       return []
   }
@@ -29,6 +29,7 @@ const config = {
         ],
       },
     ],
+    'babel-plugin-annotate-pure-calls',
     '@babel/plugin-proposal-object-rest-spread',
     ['@babel/plugin-proposal-class-properties', { loose: true }],
   ],

package.json

@@ -54,7 +54,9 @@
     "babel-eslint": "^9.0.0",
     "babel-jest": "^23.4.2",
     "babel-loader": "^8.0.2",
+    "babel-plugin-annotate-pure-calls": "^0.3.0",
     "babel-plugin-emotion": "^9.2.8",
+    "babel-plugin-styled-components": "^1.6.4",
     "babel-plugin-transform-rename-import": "^2.3.0",
     "bundlesize": "^0.17.0",
     "conventional-github-releaser": "^3.1.2",

yarn.lock

@@ -1560,6 +1560,10 @@ babel-messages@^6.23.0:
   dependencies:
     babel-runtime "^6.22.0"
 
+babel-plugin-annotate-pure-calls@^0.3.0:
+  version "0.3.0"
+  resolved "https://registry.yarnpkg.com/babel-plugin-annotate-pure-calls/-/babel-plugin-annotate-pure-calls-0.3.0.tgz#7f0ec500432506a94ff878d6425dce9d043f6902"
+
 babel-plugin-emotion@^9.2.8:
   version "9.2.8"
   resolved "https://registry.yarnpkg.com/babel-plugin-emotion/-/babel-plugin-emotion-9.2.8.tgz#4df55ef10625c391f25b031f7e3006abac359e09"
@@ -1604,6 +1608,12 @@ babel-plugin-react-docgen@^2.0.0:
     lodash "^4.17.10"
     react-docgen "^3.0.0-rc.1"
 
+babel-plugin-styled-components@^1.6.4:
+  version "1.6.4"
+  resolved "https://registry.yarnpkg.com/babel-plugin-styled-components/-/babel-plugin-styled-components-1.6.4.tgz#24677e5b37a85b04aed855a5f81f1c7bfec77784"
+  dependencies:
+    lodash "^4.17.10"
+
 babel-plugin-syntax-dynamic-import@^6.18.0:
   version "6.18.0"
   resolved "https://registry.yarnpkg.com/babel-plugin-syntax-dynamic-import/-/babel-plugin-syntax-dynamic-import-6.18.0.tgz#8d6a26229c83745a9982a441051572caa179b1da"