Allows you to run on windows (#1)

* add cross-env

* use cross-env for scripts run commands

package.json

@@ -7,8 +7,8 @@
     "url": "https://github.com/ElForastero/preact-browser-extension-boilerplate"
   },
   "scripts": {
-    "build": "NODE_ENV=production yarn webpack -c webpack.config.js --mode production",
-    "watch": "NODE_ENV=development yarn webpack -c webpack.config.js --mode development -w"
+    "build": "cross-env NODE_ENV=production yarn webpack -c webpack.config.js --mode production",
+    "watch": "cross-env NODE_ENV=development yarn webpack -c webpack.config.js --mode development -w"
   },
   "devDependencies": {
     "@babel/core": "^7.4.5",
@@ -19,6 +19,7 @@
     "babel-plugin-react-css-modules": "^5.2.6",
     "clean-webpack-plugin": "^2.0.2",
     "copy-webpack-plugin": "^5.0.3",
+    "cross-env": "^5.2.0",
     "css-loader": "^2.1.1",
     "html-webpack-plugin": "^4.0.0-beta.5",
     "incstr": "^1.2.3",

yarn.lock

@@ -1603,7 +1603,15 @@ create-hmac@^1.1.0, create-hmac@^1.1.2, create-hmac@^1.1.4:
     safe-buffer "^5.0.1"
     sha.js "^2.4.8"
 
-[email protected], cross-spawn@^6.0.0:
+cross-env@^5.2.0:
+  version "5.2.0"
+  resolved "https://registry.yarnpkg.com/cross-env/-/cross-env-5.2.0.tgz#6ecd4c015d5773e614039ee529076669b9d126f2"
+  integrity sha512-jtdNFfFW1hB7sMhr/H6rW1Z45LFqyI431m3qU6bFXcQ3Eh7LtBuG3h74o7ohHZ3crrRkkqHlo4jYHFPcjroANg==
+  dependencies:
+    cross-spawn "^6.0.5"
+    is-windows "^1.0.0"
+
+[email protected], cross-spawn@^6.0.0, cross-spawn@^6.0.5:
   version "6.0.5"
   resolved "https://registry.yarnpkg.com/cross-spawn/-/cross-spawn-6.0.5.tgz#4a5ec7c64dfae22c3a14124dbacdee846d80cbc4"
   integrity sha512-eTVLrBSt7fjbDygz805pMnstIs2VTBNkRm0qxZd+M7A5XDdxVRWO5MxGBXZhjY4cqLYLdtrGqRf8mBPmzwSpWQ==
@@ -2808,7 +2816,7 @@ is-symbol@^1.0.2:
   dependencies:
     has-symbols "^1.0.0"
 
-is-windows@^1.0.1, is-windows@^1.0.2:
+is-windows@^1.0.0, is-windows@^1.0.1, is-windows@^1.0.2:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/is-windows/-/is-windows-1.0.2.tgz#d1850eb9791ecd18e6182ce12a30f396634bb19d"
   integrity sha512-eXK1UInq2bPmjyX6e3VHIzMLobc4J94i4AWn+Hpq3OU5KkrRC96OAcR3PRJ/pGu6m8TRnBHP9dkXQVsT/COVIA==