Setup prettier and CircleCI (#512)

.circleci/config.yml

@@ -0,0 +1,46 @@
+version: 2
+executorType: docker
+
+defaults: &defaults
+  working_directory: ~/project
+  docker:
+    - image: 'circleci/node:10'
+
+jobs:
+  build:
+    <<: *defaults
+    steps:
+      - checkout
+      - restore_cache:
+          keys:
+            - 'v1-yarn-{{ .Branch }}-{{ checksum "yarn.lock" }}'
+            - v1-yarn
+      - run: yarn
+      - save_cache:
+          key: v1-yarn
+          paths:
+            - node_modules/
+      - save_cache:
+          key: 'v1-yarn-{{ .Branch }}-{{ checksum "yarn.lock" }}'
+          paths:
+            - node_modules/
+      - persist_to_workspace:
+          root: ~/project
+          paths:
+            - node_modules
+  prettier:
+    <<: *defaults
+    steps:
+      - checkout
+      - attach_workspace:
+          at: ~/project
+      - run: 'yarn run prettier:check'
+
+workflows:
+  version: 2
+  build-and-check-prettier:
+    jobs:
+      - build
+      - prettier:
+          requires:
+            - build

.prettierignore

@@ -0,0 +1 @@
+example/ios/Pods

package.json

@@ -14,7 +14,9 @@
     "Andrei Calazans (@Andrei_Calazans)"
   ],
   "scripts": {
-    "test": "echo \"Error: no test specified\" && exit 1"
+    "test": "echo \"Error: no test specified\" && exit 1",
+    "prettier:check": "prettier --list-different '**/*.js' '**/*.md'",
+    "prettier:write": "prettier --write '**/*.js' '**/*.md'"
   },
   "keywords": [
     "react-component",
@@ -36,9 +38,9 @@
     "url": "https://github.com/react-native-community/react-native-google-signin/issues"
   },
   "peerDependencies": {
+    "prop-types": "^15.5.10",
     "react": ">=15.4.0 || ^16.0.0-alpha",
-    "react-native": ">=0.40",
-    "prop-types": "^15.5.10"
+    "react-native": ">=0.40"
   },
   "rnpm": {
     "ios": {
@@ -51,5 +53,8 @@
       ]
     }
   },
-  "license": "MIT"
+  "license": "MIT",
+  "devDependencies": {
+    "prettier": "1.14.2"
+  }
 }

yarn.lock

@@ -0,0 +1,7 @@
+# THIS IS AN AUTOGENERATED FILE. DO NOT EDIT THIS FILE DIRECTLY.
+# yarn lockfile v1
+
+
+prettier@^1.14.2:
+  version "1.14.2"
+  resolved "https://registry.yarnpkg.com/prettier/-/prettier-1.14.2.tgz#0ac1c6e1a90baa22a62925f41963c841983282f9"