JSAB2-83 Add react native dotenv (green-fox-academy#26)

* JSAB2-83, add react native dotenv

* JSAB2-83, add dotenv template

frontend/.env_template

@@ -0,0 +1,2 @@
+# create new .env file and put your server url below
+SERVER_URL=<IP>:<PORT>

frontend/.gitignore

@@ -9,6 +9,7 @@ npm-debug.*
 *.orig.*
 web-build/
 web-report/
+.env
 
 # macOS
 .DS_Store

frontend/babel.config.js

@@ -2,6 +2,6 @@
 module.exports = function (api) {
   api.cache(true);
   return {
-    presets: ['babel-preset-expo'],
+    presets: ['babel-preset-expo', 'module:react-native-dotenv'],
   };
 };

frontend/package.json

@@ -16,6 +16,7 @@
     "react": "16.8.3",
     "react-dom": "16.8.3",
     "react-native": "https://github.com/expo/react-native/archive/sdk-35.0.0.tar.gz",
+    "react-native-dotenv": "^0.2.0",
     "react-native-gesture-handler": "~1.3.0",
     "react-native-reanimated": "~1.2.0",
     "react-native-screens": "~1.0.0-alpha.23",

frontend/yarn.lock

@@ -1284,6 +1284,13 @@ axobject-query@^2.0.2:
     "@babel/runtime" "^7.7.4"
     "@babel/runtime-corejs3" "^7.7.4"
 
+babel-plugin-dotenv@0.1.1:
+  version "0.1.1"
+  resolved "https://registry.yarnpkg.com/babel-plugin-dotenv/-/babel-plugin-dotenv-0.1.1.tgz#9c8faea67a7c034fe7e94099187ab2e7573400bc"
+  integrity sha1-nI+upnp8A0/n6UCZGHqy51c0ALw=
+  dependencies:
+    dotenv "^2.0.0"
+
 babel-plugin-dynamic-import-node@^2.3.0:
   version "2.3.0"
   resolved "https://registry.yarnpkg.com/babel-plugin-dynamic-import-node/-/babel-plugin-dynamic-import-node-2.3.0.tgz#f00f507bdaa3c3e3ff6e7e5e98d90a7acab96f7f"
@@ -2015,6 +2022,11 @@ dom-walk@^0.1.0:
   resolved "https://registry.yarnpkg.com/dom-walk/-/dom-walk-0.1.1.tgz#672226dc74c8f799ad35307df936aba11acd6018"
   integrity sha1-ZyIm3HTI95mtNTB9+TaroRrNYBg=
 
+dotenv@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/dotenv/-/dotenv-2.0.0.tgz#bd759c357aaa70365e01c96b7b0bec08a6e0d949"
+  integrity sha1-vXWcNXqqcDZeAclrewvsCKbg2Uk=
+
 ee-first@1.1.1:
   version "1.1.1"
   resolved "https://registry.yarnpkg.com/ee-first/-/ee-first-1.1.1.tgz#590c61156b0ae2f4f0255732a158b266bc56b21d"
@@ -5020,6 +5032,13 @@ react-native-branch@~3.0.1:
   resolved "https://registry.yarnpkg.com/react-native-branch/-/react-native-branch-3.0.1.tgz#5b07b61cbd290168cd3c3662e017ebe0f356d2ca"
   integrity sha512-vbcYxPZlpF5f39GAEUF8kuGQqCNeD3E6zEdvtOq8oCGZunHXlWlKgAS6dgBKCvsHvXgHuMtpvs39VgOp8DaKig==
 
+react-native-dotenv@^0.2.0:
+  version "0.2.0"
+  resolved "https://registry.yarnpkg.com/react-native-dotenv/-/react-native-dotenv-0.2.0.tgz#311551cb6a35a3dcfede648bded55c0e3ece579d"
+  integrity sha1-MRVRy2o1o9z+3mSL3tVcDj7OV50=
+  dependencies:
+    babel-plugin-dotenv "0.1.1"
+
 react-native-drawer@2.5.1:
   version "2.5.1"
   resolved "https://registry.yarnpkg.com/react-native-drawer/-/react-native-drawer-2.5.1.tgz#08b9314184f48c724f1b467f8859797369798654"