Add prettier config to package.json (#311)

package.json

@@ -5,18 +5,27 @@
   "devDependencies": {
     "babel-eslint": "^7.2.3",
     "eslint": "^4.2.0",
-    "eslint-plugin-babel": "^4.1.1",
     "eslint-config-fbjs": "0.0.0",
+    "eslint-plugin-babel": "^4.1.1",
     "eslint-plugin-flowtype": "^2.35.0",
     "eslint-plugin-jsx-a11y": "^6.0.2",
     "eslint-plugin-react": "^7.1.0",
-    "eslint-plugin-relay": "0.0.8"
+    "eslint-plugin-relay": "0.0.8",
+    "prettier": "^1.14.3"
   },
   "scripts": {
+    "prettier": "find . -name node_modules -prune -or -name dist -prune -or -name '*.js' -print | xargs prettier --write",
     "lint": "eslint .",
     "fbjs:build": "cd packages/fbjs && yarn && yarn run build",
     "fbjs:test": "cd packages/fbjs && yarn && yarn run test",
     "fbjs:flow": "cd packages/fbjs && yarn && yarn run flow",
     "preset:test": "cd packages/babel-preset-fbjs && yarn && yarn run test"
+  },
+  "prettier": {
+    "requirePragma": true,
+    "singleQuote": true,
+    "trailingComma": "es5",
+    "bracketSpacing": false,
+    "jsxBracketSameLine": true
   }
 }

packages/signedsource/index.js

@@ -1,9 +1,12 @@
 /**
- * Copyright (c) 2015-present, Facebook, Inc.
+ * Copyright (c) Facebook, Inc. and its affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
+ *
+ * @format
  */
+
 'use strict';
 
 const crypto = require('crypto');
@@ -79,7 +82,7 @@ const SignedSource = {
     if (!matches) {
       throw new Error(
         'SignedSource.verifySignature(...): Cannot verify signature of an ' +
-        'unsigned file.'
+          'unsigned file.'
       );
     }
     const actual = matches[1];