Add prettier hook on commit

.prettierignore

@@ -0,0 +1,3 @@
+**/.vscode
+**/package.json
+**/node_modules

.prettierrc

@@ -0,0 +1,8 @@
+{
+  "printWidth": 100,
+  "trailingComma": "es5",
+  "singleQuote": true,
+  "parser": "flow",
+  "bracketSpacing": false,
+  "tabWidth": 4
+}

package.json

@@ -3,6 +3,8 @@
   "version": "0.1.0",
   "private": true,
   "devDependencies": {
+    "husky": "^0.14.3",
+    "prettier": "^1.14.2",
     "react-scripts": "^1.0.11"
   },
   "dependencies": {
@@ -25,6 +27,13 @@
     "test": "react-scripts test --env=jsdom",
     "eject": "react-scripts eject",
     "build:pres": "cd presentations && npm run build",
-    "start:pres": "cd presentations && npm start"
+    "start:pres": "cd presentations && npm start",
+    "precommit": "lint-staged"
+  },
+  "lint-staged": {
+    "*.{js,json}": [
+      "prettier --config ./.prettierrc --write",
+      "git add"
+    ]
   }
 }

yarn.lock

@@ -3038,6 +3038,14 @@ [email protected]:
   version "0.0.1"
   resolved "https://registry.yarnpkg.com/https-browserify/-/https-browserify-0.0.1.tgz#3f91365cabe60b77ed0ebba24b454e3e09d95a82"
 
+husky@^0.14.3:
+  version "0.14.3"
+  resolved "https://registry.yarnpkg.com/husky/-/husky-0.14.3.tgz#c69ed74e2d2779769a17ba8399b54ce0b63c12c3"
+  dependencies:
+    is-ci "^1.0.10"
+    normalize-path "^1.0.0"
+    strip-indent "^2.0.0"
+
 [email protected]:
   version "0.4.13"
   resolved "https://registry.yarnpkg.com/iconv-lite/-/iconv-lite-0.4.13.tgz#1f88aba4ab0b1508e8312acc39345f36e992e2f2"
@@ -4242,6 +4250,10 @@ normalize-package-data@^2.3.2, normalize-package-data@^2.3.4:
     semver "2 || 3 || 4 || 5"
     validate-npm-package-license "^3.0.1"
 
+normalize-path@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/normalize-path/-/normalize-path-1.0.0.tgz#32d0e472f91ff345701c15a8311018d3b0a90379"
+
 normalize-path@^2.0.1:
   version "2.0.1"
   resolved "https://registry.yarnpkg.com/normalize-path/-/normalize-path-2.0.1.tgz#47886ac1662760d4261b7d979d241709d3ce3f7a"
@@ -4895,6 +4907,10 @@ preserve@^0.2.0:
   version "0.2.0"
   resolved "https://registry.yarnpkg.com/preserve/-/preserve-0.2.0.tgz#815ed1f6ebc65926f865b310c0713bcb3315ce4b"
 
+prettier@^1.14.2:
+  version "1.14.2"
+  resolved "https://registry.yarnpkg.com/prettier/-/prettier-1.14.2.tgz#0ac1c6e1a90baa22a62925f41963c841983282f9"
+
 pretty-bytes@^4.0.2:
   version "4.0.2"
   resolved "https://registry.yarnpkg.com/pretty-bytes/-/pretty-bytes-4.0.2.tgz#b2bf82e7350d65c6c33aa95aaa5a4f6327f61cd9"
@@ -5852,6 +5868,10 @@ strip-indent@^1.0.1:
   dependencies:
     get-stdin "^4.0.1"
 
+strip-indent@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/strip-indent/-/strip-indent-2.0.0.tgz#5ef8db295d01e6ed6cbf7aab96998d7822527b68"
+
 strip-json-comments@~2.0.1:
   version "2.0.1"
   resolved "https://registry.yarnpkg.com/strip-json-comments/-/strip-json-comments-2.0.1.tgz#3c531942e908c2697c0ec344858c286c7ca0a60a"