Merge pull request #36 from paulfalgout/patch-2

major: Move external resources to peerDependencies

README.md

@@ -8,9 +8,22 @@ Cypress preprocessor for bundling JavaScript via webpack
 npm install --save-dev @cypress/webpack-preprocessor
 ```
 
+This package relies on the following [peer dependencies](https://docs.npmjs.com/files/package.json#peerdependencies):
+
+* @babel/core
+* @babel/preset-env
+* babel-loader
+* webpack
+
+It is likely you already have these installed either directly or as a transient dependency, but if not, you will need to install them.
+
+```sh
+npm install --save-dev @babel/core @babel/preset-env babel-loader webpack
+```
+
 ## Compatibility
 
-This version is only compatible with webpack 4.x+ and Babel 7.x+. 
+This version is only compatible with webpack 4.x+ and Babel 7.x+.
 
 * If you need webpack 2 or 3 support, use `@cypress/webpack-preprocessor` 1.x
 * If you need Babel 6 support, use `@cypress/webpack-preprocessor` <= 2.x
@@ -63,10 +76,7 @@ Object of webpack options. Just `require` in the options from your `webpack.conf
         use: [{
           loader: 'babel-loader',
           options: {
-            presets: [
-              'babel-preset-env',
-              'babel-preset-react',
-            ],
+            presets: ['babel-preset-env'],
           },
         }],
       },

index.js

@@ -19,7 +19,7 @@ const defaultOptions = {
             {
               loader: require.resolve('babel-loader'),
               options: {
-                presets: ['@babel/preset-env', '@babel/preset-react'].map(require.resolve),
+                presets: require.resolve('@babel/preset-env'),
               },
             },
           ],

package.json

@@ -54,15 +54,16 @@
     "sinon": "3.2.1",
     "sinon-chai": "2.13.0"
   },
+  "peerDependencies": {
+    "@babel/core": "^7.0.1",
+    "@babel/preset-env": "^7.0.0",
+    "babel-loader": "^8.0.2",
+    "webpack": "^4.18.1"
+  },
   "dependencies": {
-    "@babel/core": "7.0.1",
-    "@babel/preset-env": "7.0.0",
-    "@babel/preset-react": "7.0.0",
-    "babel-loader": "8.0.2",
     "bluebird": "3.5.0",
     "debug": "3.1.0",
-    "lodash.clonedeep": "4.5.0",
-    "webpack": "4.18.1"
+    "lodash.clonedeep": "4.5.0"
   },
   "release": {
     "verifyConditions": "condition-circle",