Add dotenv dependency for environment variables

Author: Sean Prashad

web/.env.example

@@ -0,0 +1 @@
+REACT_APP_ANALYTICS=VALUE

web/.gitignore

@@ -13,6 +13,7 @@
 
 # misc
 .DS_Store
+.env
 .env.local
 .env.development.local
 .env.test.local

web/package.json

@@ -9,12 +9,14 @@
     "@testing-library/user-event": "^7.1.2",
     "bootstrap": "^4.4.1",
     "classnames": "^2.2.6",
+    "dotenv": "^8.2.0",
     "enzyme": "^3.11.0",
     "enzyme-adapter-react-16": "^1.15.2",
     "gh-pages": "^2.2.0",
     "node-sass": "^4.13.0",
     "react": "^16.12.0",
     "react-dom": "^16.12.0",
+    "react-ga": "^2.7.0",
     "react-icons": "^3.8.0",
     "react-markdown": "^4.3.1",
     "react-scripts": "3.3.0",

web/yarn.lock

@@ -3745,7 +3745,7 @@ dotenv-expand@5.1.0:
   resolved "https://registry.yarnpkg.com/dotenv-expand/-/dotenv-expand-5.1.0.tgz#3fbaf020bfd794884072ea26b1e9791d45a629f0"
   integrity sha512-YXQl1DSa4/PQyRfgrv6aoNjhasp/p4qs9FjJ4q4cQk+8m4r6k4ZSiEyytKG8f8W9gi8WsQtIObNmKd+tMzNTmA==
 
-dotenv@8.2.0:
+dotenv@8.2.0, dotenv@^8.2.0:
   version "8.2.0"
   resolved "https://registry.yarnpkg.com/dotenv/-/dotenv-8.2.0.tgz#97e619259ada750eea3e4ea3e26bceea5424b16a"
   integrity sha512-8sJ78ElpbDJBHNeBzUbUVLsqKdccaa/BXF1uPTw3GrvQTBgrQrtObr2mUrE38vzYd8cEv+m/JBfDLioYcfXoaw==
@@ -9420,6 +9420,11 @@ react-error-overlay@^6.0.4:
   resolved "https://registry.yarnpkg.com/react-error-overlay/-/react-error-overlay-6.0.4.tgz#0d165d6d27488e660bc08e57bdabaad741366f7a"
   integrity sha512-ueZzLmHltszTshDMwyfELDq8zOA803wQ1ZuzCccXa1m57k1PxSHfflPD5W9YIiTXLs0JTLzoj6o1LuM5N6zzNA==
 
+react-ga@^2.7.0:
+  version "2.7.0"
+  resolved "https://registry.yarnpkg.com/react-ga/-/react-ga-2.7.0.tgz#24328f157f31e8cffbf4de74a3396536679d8d7c"
+  integrity sha512-AjC7UOZMvygrWTc2hKxTDvlMXEtbmA0IgJjmkhgmQQ3RkXrWR11xEagLGFGaNyaPnmg24oaIiaNPnEoftUhfXA==
+
 react-icons@^3.8.0:
   version "3.8.0"
   resolved "https://registry.yarnpkg.com/react-icons/-/react-icons-3.8.0.tgz#229de5904809696c9f46932bd9b6126b2522866e"