Config and flow scripts

.babelrc

@@ -1,5 +1,8 @@
 {
-  "presets": ["react", "env"],
+  "presets": [
+    "react",
+    "env"
+  ],
   "plugins": [
     "lodash",
     "transform-decorators-legacy",
@@ -10,7 +13,9 @@
   ],
   "env": {
     "development": {
-      "presets": ["react-hmre"]
+      "presets": [
+        "react-hmre"
+      ]
     }
   }
-}
+}

.eslintrc

@@ -1,6 +1,10 @@
 {
   "parser": "babel-eslint",
-  "extends": ["react-app", "plugin:import/errors", "plugin:import/warnings"],
+  "extends": [
+    "react-app",
+    "plugin:import/errors",
+    "plugin:import/warnings"
+  ],
   "plugins": [
     "prettier"
   ],
@@ -10,23 +14,25 @@
     // does more harm than good.
     "no-mixed-operators": "off",
     // Enforce that code is formatted with prettier.
-    "prettier/prettier":  ["error", {"trailingComma": "es5", "singleQuote": true}]
-  },
-  "settings" : {
-    "import/resolver": {
-      "webpack": {
-        "config": "webpack.config.js"
+    "prettier/prettier": [
+      "error",
+      {
+        "trailingComma": "es5",
+        "singleQuote": true
       }
-    }
+    ]
+  },
+  "settings": {
+    "import/resolver": "webpack"
   },
   "env": {
-    "jest": true,
+    "jest": true
   },
   "globals": {
-    __DEV__: true,
-    SLACK_KEY: true,
-    SLACK_REDIRECT_URI: true,
-    DEPLOYMENT: true,
-    afterAll: true
-  },
-}
+    "__DEV__": true,
+    "SLACK_KEY": true,
+    "SLACK_REDIRECT_URI": true,
+    "DEPLOYMENT": true,
+    "afterAll": true
+  }
+}

package.json

@@ -9,7 +9,9 @@
     "build": "npm run clean && npm run build:webpack",
     "start": "node index.js",
     "dev": "cross-env NODE_ENV=development DEBUG=sql,cache,presenters ./node_modules/.bin/nodemon --watch server index.js",
-    "lint": "eslint frontend",
+    "lint": "npm run lint:js && npm run lint:flow",
+    "lint:js": "eslint frontend",
+    "lint:flow": "flow check",
     "deploy": "git push heroku master",
     "heroku-postbuild": "npm run build && npm run sequelize db:migrate",
     "sequelize": "./node_modules/.bin/sequelize",
@@ -92,6 +94,7 @@
     "exports-loader": "0.6.3",
     "extract-text-webpack-plugin": "1.0.1",
     "file-loader": "0.9.0",
+    "flow": "^0.2.3",
     "highlight.js": "9.4.0",
     "history": "3.0.0",
     "html-webpack-plugin": "2.17.0",
@@ -174,4 +177,4 @@
     "react-addons-test-utils": "^15.3.1",
     "react-test-renderer": "^15.3.1"
   }
-}
+}

yarn.lock

@@ -3036,6 +3036,10 @@ flow-parser@0.43.0:
   version "0.43.0"
   resolved "https://registry.yarnpkg.com/flow-parser/-/flow-parser-0.43.0.tgz#e2b8eb1ac83dd53f7b6b04a7c35b6a52c33479b7"
 
+flow@^0.2.3:
+  version "0.2.3"
+  resolved "https://registry.yarnpkg.com/flow/-/flow-0.2.3.tgz#f8da65efa249127ec99376a28896572a9795d1af"
+
 for-in@^0.1.5:
   version "0.1.6"
   resolved "https://registry.yarnpkg.com/for-in/-/for-in-0.1.6.tgz#c9f96e89bfad18a545af5ec3ed352a1d9e5b4dc8"