Add prettier

Author: rafgraph

package.json

@@ -36,9 +36,14 @@
     "babel-cli": "^6.26.0",
     "babel-plugin-transform-object-rest-spread": "^6.26.0",
     "babel-preset-env": "^1.6.1",
-    "babel-preset-react": "^6.24.1"
+    "babel-preset-react": "^6.24.1",
+    "prettier": "^2.1.2"
   },
   "dependencies": {
     "prop-types": "^15.6.0"
+  },
+  "prettier": {
+    "trailingComma": "all",
+    "singleQuote": true
   }
 }

yarn.lock

@@ -1398,6 +1398,11 @@ preserve@^0.2.0:
   version "0.2.0"
   resolved "https://registry.yarnpkg.com/preserve/-/preserve-0.2.0.tgz#815ed1f6ebc65926f865b310c0713bcb3315ce4b"
 
+prettier@^2.1.2:
+  version "2.1.2"
+  resolved "https://registry.yarnpkg.com/prettier/-/prettier-2.1.2.tgz#3050700dae2e4c8b67c4c3f666cdb8af405e1ce5"
+  integrity sha512-16c7K+x4qVlJg9rEbXl7HEGmQyZlG4R9AgP+oHKRMsMsuk8s+ATStlf1NpDqyBI1HpVyfjLOeMhH2LvuNvV5Vg==
+
 private@^0.1.6, private@^0.1.7:
   version "0.1.7"
   resolved "https://registry.yarnpkg.com/private/-/private-0.1.7.tgz#68ce5e8a1ef0a23bb570cc28537b5332aba63ef1"