From 37f9242fc6979fdd90e22dd26ef5b1ca7905b486 Mon Sep 17 00:00:00 2001
From: Brian Ng <bng412@gmail.com>
Date: Sat, 17 Jun 2017 14:14:42 -0500
Subject: [PATCH] Add Prettier (#491)

---
 .eslintrc.js                             |   6 +-
 babylon-to-espree/attachComments.js      |   2 +-
 babylon-to-espree/convertComments.js     |   2 +-
 babylon-to-espree/convertTemplateType.js |  30 +-
 babylon-to-espree/index.js               |   8 +-
 babylon-to-espree/toAST.js               |  28 +-
 babylon-to-espree/toToken.js             |  58 ++--
 babylon-to-espree/toTokens.js            |   2 +-
 index.js                                 |  91 +++---
 package.json                             |  15 +-
 test/babel-eslint.js                     | 101 ++++---
 test/integration.js                      | 319 +++++++++++---------
 test/non-regression.js                   | 215 +++++++-------
 yarn.lock                                | 362 ++++++++++++++++++++++-
 14 files changed, 856 insertions(+), 383 deletions(-)

diff --git a/.eslintrc.js b/.eslintrc.js
index 20f31f1e..adce94d6 100644
--- a/.eslintrc.js
+++ b/.eslintrc.js
@@ -1,9 +1,13 @@
 module.exports = {
   root: true,
   extends: "babel",
+  "plugins": [
+    "prettier"
+  ],
   rules: {
     "no-var": 0,
-    "max-len": 0
+    "max-len": 0,
+    "prettier/prettier": ["error", { "trailingComma": "es5" }],
   },
   env: {
     node: true,
diff --git a/babylon-to-espree/attachComments.js b/babylon-to-espree/attachComments.js
index 9fc9f339..8c608a45 100644
--- a/babylon-to-espree/attachComments.js
+++ b/babylon-to-espree/attachComments.js
@@ -1,7 +1,7 @@
 "use strict";
 
 // comment fixes
-module.exports = function (ast, comments, tokens) {
+module.exports = function(ast, comments, tokens) {
   if (comments.length) {
     var firstComment = comments[0];
     var lastComment = comments[comments.length - 1];
diff --git a/babylon-to-espree/convertComments.js b/babylon-to-espree/convertComments.js
index 19c6ce8c..17d71173 100644
--- a/babylon-to-espree/convertComments.js
+++ b/babylon-to-espree/convertComments.js
@@ -1,6 +1,6 @@
 "use strict";
 
-module.exports = function (comments) {
+module.exports = function(comments) {
   for (var i = 0; i < comments.length; i++) {
     var comment = comments[i];
     if (comment.type === "CommentBlock") {
diff --git a/babylon-to-espree/convertTemplateType.js b/babylon-to-espree/convertTemplateType.js
index 8b647c39..d8892f99 100644
--- a/babylon-to-espree/convertTemplateType.js
+++ b/babylon-to-espree/convertTemplateType.js
@@ -1,24 +1,25 @@
 "use strict";
 
-module.exports = function (tokens, tt) {
-  var startingToken    = 0;
-  var currentToken     = 0;
-  var numBraces        = 0; // track use of {}
-  var numBackQuotes    = 0; // track number of nested templates
+module.exports = function(tokens, tt) {
+  var startingToken = 0;
+  var currentToken = 0;
+  var numBraces = 0; // track use of {}
+  var numBackQuotes = 0; // track number of nested templates
 
   function isBackQuote(token) {
     return tokens[token].type === tt.backQuote;
   }
 
   function isTemplateStarter(token) {
-    return isBackQuote(token) ||
-           // only can be a template starter when in a template already
-           tokens[token].type === tt.braceR && numBackQuotes > 0;
+    return (
+      isBackQuote(token) ||
+      // only can be a template starter when in a template already
+      (tokens[token].type === tt.braceR && numBackQuotes > 0)
+    );
   }
 
   function isTemplateEnder(token) {
-    return isBackQuote(token) ||
-           tokens[token].type === tt.dollarBraceL;
+    return isBackQuote(token) || tokens[token].type === tt.dollarBraceL;
   }
 
   // append the values between start and end
@@ -44,8 +45,8 @@ module.exports = function (tokens, tt) {
       end: tokens[end].end,
       loc: {
         start: tokens[start].loc.start,
-        end: tokens[end].loc.end
-      }
+        end: tokens[end].loc.end,
+      },
     };
 
     // put new token in place of old tokens
@@ -70,7 +71,10 @@ module.exports = function (tokens, tt) {
       currentToken = startingToken + 1;
 
       // check if token after template start is "template"
-      if (currentToken >= tokens.length - 1 || tokens[currentToken].type !== tt.template) {
+      if (
+        currentToken >= tokens.length - 1 ||
+        tokens[currentToken].type !== tt.template
+      ) {
         break;
       }
 
diff --git a/babylon-to-espree/index.js b/babylon-to-espree/index.js
index d19c9b07..ecd8eee6 100644
--- a/babylon-to-espree/index.js
+++ b/babylon-to-espree/index.js
@@ -1,11 +1,11 @@
 "use strict";
 
-var attachComments  = require("./attachComments");
+var attachComments = require("./attachComments");
 var convertComments = require("./convertComments");
-var toTokens        = require("./toTokens");
-var toAST           = require("./toAST");
+var toTokens = require("./toTokens");
+var toAST = require("./toAST");
 
-module.exports = function (ast, traverse, tt, code) {
+module.exports = function(ast, traverse, tt, code) {
   // remove EOF token, eslint doesn't use this for anything and it interferes
   // with some rules see https://github.com/babel/babel-eslint/issues/2
   // todo: find a more elegant way to do this
diff --git a/babylon-to-espree/toAST.js b/babylon-to-espree/toAST.js
index 2830f5dc..7e3e6876 100644
--- a/babylon-to-espree/toAST.js
+++ b/babylon-to-espree/toAST.js
@@ -3,12 +3,18 @@
 var t = require("babel-types");
 var convertComments = require("./convertComments");
 
-module.exports = function (ast, traverse, code) {
+module.exports = function(ast, traverse, code) {
   var state = { source: code };
 
   // Monkey patch visitor keys in order to be able to traverse the estree nodes
   t.VISITOR_KEYS.Property = t.VISITOR_KEYS.ObjectProperty;
-  t.VISITOR_KEYS.MethodDefinition = ["key", "value", "decorators", "returnType", "typeParameters"];
+  t.VISITOR_KEYS.MethodDefinition = [
+    "key",
+    "value",
+    "decorators",
+    "returnType",
+    "typeParameters",
+  ];
 
   traverse(ast, astTransformVisitor, null, state);
 
@@ -18,7 +24,7 @@ module.exports = function (ast, traverse, code) {
 
 var astTransformVisitor = {
   noScope: true,
-  enter (path) {
+  enter(path) {
     var node = path.node;
 
     // private var to track original node type
@@ -37,7 +43,7 @@ var astTransformVisitor = {
       convertComments(node.leadingComments);
     }
   },
-  exit (path) {
+  exit(path) {
     var node = path.node;
 
     if (path.isJSXText()) {
@@ -49,11 +55,19 @@ var astTransformVisitor = {
       if (!node.shorthand) node.shorthand = false;
     }
 
-    if (path.isRestElement() && path.parent && path.parent.type === "ObjectPattern") {
+    if (
+      path.isRestElement() &&
+      path.parent &&
+      path.parent.type === "ObjectPattern"
+    ) {
       node.type = "ExperimentalRestProperty";
     }
 
-    if (path.isSpreadElement() && path.parent && path.parent.type === "ObjectExpression") {
+    if (
+      path.isSpreadElement() &&
+      path.parent &&
+      path.parent.type === "ObjectExpression"
+    ) {
       node.type = "ExperimentalSpreadProperty";
     }
 
@@ -105,5 +119,5 @@ var astTransformVisitor = {
         }
       }
     }
-  }
+  },
 };
diff --git a/babylon-to-espree/toToken.js b/babylon-to-espree/toToken.js
index 6173f760..9c5a49ef 100644
--- a/babylon-to-espree/toToken.js
+++ b/babylon-to-espree/toToken.js
@@ -1,29 +1,47 @@
 "use strict";
 
-module.exports = function (token, tt, source) {
+module.exports = function(token, tt, source) {
   var type = token.type;
   token.range = [token.start, token.end];
 
   if (type === tt.name) {
     token.type = "Identifier";
-  } else if (type === tt.semi || type === tt.comma ||
-             type === tt.parenL || type === tt.parenR ||
-             type === tt.braceL || type === tt.braceR ||
-             type === tt.slash || type === tt.dot ||
-             type === tt.bracketL || type === tt.bracketR ||
-             type === tt.ellipsis || type === tt.arrow ||
-             type === tt.star || type === tt.incDec ||
-             type === tt.colon || type === tt.question ||
-             type === tt.template || type === tt.backQuote ||
-             type === tt.dollarBraceL || type === tt.at ||
-             type === tt.logicalOR || type === tt.logicalAND ||
-             type === tt.bitwiseOR || type === tt.bitwiseXOR ||
-             type === tt.bitwiseAND || type === tt.equality ||
-             type === tt.relational || type === tt.bitShift ||
-             type === tt.plusMin || type === tt.modulo ||
-             type === tt.exponent || type === tt.prefix ||
-             type === tt.doubleColon ||
-             type.isAssign) {
+  } else if (
+    type === tt.semi ||
+    type === tt.comma ||
+    type === tt.parenL ||
+    type === tt.parenR ||
+    type === tt.braceL ||
+    type === tt.braceR ||
+    type === tt.slash ||
+    type === tt.dot ||
+    type === tt.bracketL ||
+    type === tt.bracketR ||
+    type === tt.ellipsis ||
+    type === tt.arrow ||
+    type === tt.star ||
+    type === tt.incDec ||
+    type === tt.colon ||
+    type === tt.question ||
+    type === tt.template ||
+    type === tt.backQuote ||
+    type === tt.dollarBraceL ||
+    type === tt.at ||
+    type === tt.logicalOR ||
+    type === tt.logicalAND ||
+    type === tt.bitwiseOR ||
+    type === tt.bitwiseXOR ||
+    type === tt.bitwiseAND ||
+    type === tt.equality ||
+    type === tt.relational ||
+    type === tt.bitShift ||
+    type === tt.plusMin ||
+    type === tt.modulo ||
+    type === tt.exponent ||
+    type === tt.prefix ||
+    type === tt.doubleColon ||
+    type.isAssign
+  ) {
     token.type = "Punctuator";
     if (!token.value) token.value = type.label;
   } else if (type === tt.jsxTagStart) {
@@ -53,7 +71,7 @@ module.exports = function (token, tt, source) {
     var value = token.value;
     token.regex = {
       pattern: value.pattern,
-      flags: value.flags
+      flags: value.flags,
     };
     token.value = `/${value.pattern}/${value.flags}`;
   }
diff --git a/babylon-to-espree/toTokens.js b/babylon-to-espree/toTokens.js
index 81ec9850..a863b871 100644
--- a/babylon-to-espree/toTokens.js
+++ b/babylon-to-espree/toTokens.js
@@ -3,7 +3,7 @@
 var convertTemplateType = require("./convertTemplateType");
 var toToken = require("./toToken");
 
-module.exports = function (tokens, tt, code) {
+module.exports = function(tokens, tt, code) {
   // transform tokens to type "Template"
   convertTemplateType(tokens, tt);
 
diff --git a/index.js b/index.js
index 5beabc74..ecedcb50 100644
--- a/index.js
+++ b/index.js
@@ -1,10 +1,10 @@
 var babylonToEspree = require("./babylon-to-espree");
-var Module          = require("module");
-var path            = require("path");
-var parse           = require("babylon").parse;
-var t               = require("babel-types");
-var tt              = require("babylon").tokTypes;
-var traverse        = require("babel-traverse").default;
+var Module = require("module");
+var path = require("path");
+var parse = require("babylon").parse;
+var t = require("babel-types");
+var tt = require("babylon").tokTypes;
+var traverse = require("babel-traverse").default;
 var codeFrameColumns = require("babel-code-frame").codeFrameColumns;
 
 var hasPatched = false;
@@ -30,10 +30,11 @@ function getModules() {
 
   try {
     var escope = eslintMod.require("eslint-scope");
-    var Definition = eslintMod.require("eslint-scope/lib/definition").Definition;
+    var Definition = eslintMod.require("eslint-scope/lib/definition")
+      .Definition;
     var referencer = eslintMod.require("eslint-scope/lib/referencer");
   } catch (err) {
-    escope  = eslintMod.require("escope");
+    escope = eslintMod.require("escope");
     Definition = eslintMod.require("escope/lib/definition").Definition;
     referencer = eslintMod.require("escope/lib/referencer");
   }
@@ -61,7 +62,7 @@ function monkeypatch(modules) {
   estraverse.VisitorKeys.Property.push("decorators");
 
   var analyze = escope.analyze;
-  escope.analyze = function (ast, opts) {
+  escope.analyze = function(ast, opts) {
     opts = opts || {};
     opts.ecmaVersion = eslintOptions.ecmaVersion;
     opts.sourceType = eslintOptions.sourceType;
@@ -94,7 +95,7 @@ function monkeypatch(modules) {
     "FunctionExpression",
     "Identifier",
     "ObjectPattern",
-    "RestElement"
+    "RestElement",
   ]);
   var visitorKeysMap = Object.keys(t.VISITOR_KEYS).reduce(function(acc, key) {
     var value = t.VISITOR_KEYS[key];
@@ -120,7 +121,7 @@ function monkeypatch(modules) {
     // others
     typeAnnotation: { type: "typeAnnotation" },
     typeParameters: { type: "typeParameters" },
-    id: { type: "id" }
+    id: { type: "id" },
   };
 
   function visitTypeAnnotation(node) {
@@ -182,7 +183,13 @@ function monkeypatch(modules) {
 
   function nestTypeParamScope(manager, node) {
     var parentScope = manager.__currentScope;
-    var scope = new escope.Scope(manager, "type-parameters", parentScope, node, false);
+    var scope = new escope.Scope(
+      manager,
+      "type-parameters",
+      parentScope,
+      node,
+      false
+    );
     manager.__nestScope(scope);
     for (var j = 0; j < node.typeParameters.params.length; j++) {
       var name = node.typeParameters.params[j];
@@ -296,16 +303,10 @@ function monkeypatch(modules) {
     variableDeclaration.call(this, node);
   };
 
-  function createScopeVariable (node, name) {
-    this.currentScope().variableScope.__define(name,
-      new Definition(
-        "Variable",
-        name,
-        node,
-        null,
-        null,
-        null
-      )
+  function createScopeVariable(node, name) {
+    this.currentScope().variableScope.__define(
+      name,
+      new Definition("Variable", name, node, null, null, null)
     );
   }
 
@@ -339,10 +340,9 @@ function monkeypatch(modules) {
     }
   };
 
-  referencer.prototype.DeclareModule =
-  referencer.prototype.DeclareFunction =
-  referencer.prototype.DeclareVariable =
-  referencer.prototype.DeclareClass = function(node) {
+  referencer.prototype.DeclareModule = referencer.prototype.DeclareFunction = referencer.prototype.DeclareVariable = referencer.prototype.DeclareClass = function(
+    node
+  ) {
     if (node.id) {
       createScopeVariable.call(this, node, node.id);
     }
@@ -357,11 +357,13 @@ function monkeypatch(modules) {
   };
 }
 
-exports.parse = function (code, options) {
+exports.parse = function(code, options) {
   options = options || {};
   eslintOptions.ecmaVersion = options.ecmaVersion = options.ecmaVersion || 6;
-  eslintOptions.sourceType = options.sourceType = options.sourceType || "module";
-  eslintOptions.allowImportExportEverywhere = options.allowImportExportEverywhere = options.allowImportExportEverywhere || false;
+  eslintOptions.sourceType = options.sourceType =
+    options.sourceType || "module";
+  eslintOptions.allowImportExportEverywhere = options.allowImportExportEverywhere =
+    options.allowImportExportEverywhere || false;
   if (options.sourceType === "module") {
     eslintOptions.globalReturn = false;
   } else {
@@ -381,7 +383,7 @@ exports.parse = function (code, options) {
   return exports.parseNoPatch(code, options);
 };
 
-exports.parseNoPatch = function (code, options) {
+exports.parseNoPatch = function(code, options) {
   var opts = {
     codeFrame: options.hasOwnProperty("codeFrame") ? options.codeFrame : true,
     sourceType: options.sourceType,
@@ -410,7 +412,7 @@ exports.parseNoPatch = function (code, options) {
       "optionalChaining",
       "importMeta",
       "classPrivateProperties",
-    ]
+    ],
   };
 
   var ast;
@@ -418,7 +420,6 @@ exports.parseNoPatch = function (code, options) {
     ast = parse(code, opts);
   } catch (err) {
     if (err instanceof SyntaxError) {
-
       err.lineNumber = err.loc.line;
       err.column = err.loc.column;
 
@@ -427,15 +428,23 @@ exports.parseNoPatch = function (code, options) {
         err.column = err.loc.column + 1;
 
         // remove trailing "(LINE:COLUMN)" acorn message and add in esprima syntax error message start
-        err.message = "Line " + err.lineNumber + ": " + err.message.replace(/ \((\d+):(\d+)\)$/, "") +
-        // add codeframe
-        "\n\n" +
-        codeFrameColumns(code, {
-          start: {
-            line: err.lineNumber,
-            column: err.column,
-          },
-        }, { highlightCode: true });
+        err.message =
+          "Line " +
+          err.lineNumber +
+          ": " +
+          err.message.replace(/ \((\d+):(\d+)\)$/, "") +
+          // add codeframe
+          "\n\n" +
+          codeFrameColumns(
+            code,
+            {
+              start: {
+                line: err.lineNumber,
+                column: err.column,
+              },
+            },
+            { highlightCode: true }
+          );
       }
     }
 
diff --git a/package.json b/package.json
index 2f4ddc90..90eb98e7 100644
--- a/package.json
+++ b/package.json
@@ -22,6 +22,7 @@
     "test-only": "mocha",
     "lint": "eslint index.js babylon-to-espree test",
     "fix": "eslint index.js babylon-to-espree test --fix",
+    "precommit": "lint-staged",
     "preversion": "npm test",
     "changelog": "git log `git describe --tags --abbrev=0`..HEAD --pretty=format:' * %s (%an)' | grep -v 'Merge pull request'"
   },
@@ -38,9 +39,19 @@
     "babel-eslint": "^7.0.0",
     "dedent": "^0.7.0",
     "eslint": "^3.18.0",
-    "eslint-config-babel": "^6.0.0",
+    "eslint-config-babel": "^7.0.1",
     "eslint-plugin-flowtype": "^2.30.3",
+    "eslint-plugin-prettier": "^2.1.2",
     "espree": "^3.4.0",
-    "mocha": "^3.0.0"
+    "husky": "^0.13.2",
+    "lint-staged": "^3.6.1",
+    "mocha": "^3.0.0",
+    "prettier": "1.4.4"
+  },
+  "lint-staged": {
+    "*.js": [
+      "eslint --format=codeframe --fix",
+      "git add"
+    ]
   }
 }
diff --git a/test/babel-eslint.js b/test/babel-eslint.js
index 31d3918c..2ac2d3af 100644
--- a/test/babel-eslint.js
+++ b/test/babel-eslint.js
@@ -1,9 +1,9 @@
-var assert      = require("assert");
+var assert = require("assert");
 var babelEslint = require("..");
-var espree      = require("espree");
-var escope      = require("escope");
-var util        = require("util");
-var unpad       = require("dedent");
+var espree = require("espree");
+var escope = require("escope");
+var util = require("util");
+var unpad = require("dedent");
 
 // Checks if the source ast implements the target ast. Ignores extra keys on source ast
 function assertImplementsAST(target, source, path) {
@@ -20,9 +20,18 @@ function assertImplementsAST(target, source, path) {
   var typeA = target === null ? "null" : typeof target;
   var typeB = source === null ? "null" : typeof source;
   if (typeA !== typeB) {
-    error(`have different types (${typeA} !== ${typeB}) (${target} !== ${source})`);
-  } else if (typeA === "object" && ["RegExp"].indexOf(target.constructor.name) !== -1 && target.constructor.name !== source.constructor.name) {
-    error(`object have different constructors (${target.constructor.name} !== ${source.constructor.name}`);
+    error(
+      `have different types (${typeA} !== ${typeB}) (${target} !== ${source})`
+    );
+  } else if (
+    typeA === "object" &&
+    ["RegExp"].indexOf(target.constructor.name) !== -1 &&
+    target.constructor.name !== source.constructor.name
+  ) {
+    error(
+      `object have different constructors (${target.constructor
+        .name} !== ${source.constructor.name}`
+    );
   } else if (typeA === "object") {
     var keysTarget = Object.keys(target);
     for (var i in keysTarget) {
@@ -32,28 +41,36 @@ function assertImplementsAST(target, source, path) {
       path.pop();
     }
   } else if (target !== source) {
-    error(`are different (${JSON.stringify(target)} !== ${JSON.stringify(source)})`);
+    error(
+      `are different (${JSON.stringify(target)} !== ${JSON.stringify(source)})`
+    );
   }
 }
 
 function lookup(obj, keypath, backwardsDepth) {
-  if (!keypath) { return obj; }
+  if (!keypath) {
+    return obj;
+  }
 
-  return keypath.split(".").slice(0, -1 * backwardsDepth)
-  .reduce((base, segment) => { return base && base[segment], obj; });
+  return keypath
+    .split(".")
+    .slice(0, -1 * backwardsDepth)
+    .reduce((base, segment) => {
+      return base && base[segment], obj;
+    });
 }
 
 function parseAndAssertSame(code) {
   var esAST = espree.parse(code, {
     ecmaFeatures: {
-        // enable JSX parsing
+      // enable JSX parsing
       jsx: true,
-        // enable return in global scope
+      // enable return in global scope
       globalReturn: true,
-        // enable implied strict mode (if ecmaVersion >= 5)
+      // enable implied strict mode (if ecmaVersion >= 5)
       impliedStrict: true,
-        // allow experimental object rest/spread
-      experimentalObjectRestSpread: true
+      // allow experimental object rest/spread
+      experimentalObjectRestSpread: true,
     },
     tokens: true,
     loc: true,
@@ -61,7 +78,7 @@ function parseAndAssertSame(code) {
     comment: true,
     attachComment: true,
     ecmaVersion: 8,
-    sourceType: "module"
+    sourceType: "module",
   });
   var babylonAST = babelEslint.parse(code);
   try {
@@ -76,9 +93,15 @@ function parseAndAssertSame(code) {
     }
     err.message += unpad(`
       espree:
-      ${util.inspect(lookup(esAST, traversal, 2), { depth: err.depth, colors: true })}
+      ${util.inspect(lookup(esAST, traversal, 2), {
+        depth: err.depth,
+        colors: true,
+      })}
       babel-eslint:
-      ${util.inspect(lookup(babylonAST, traversal, 2), { depth: err.depth, colors: true })}
+      ${util.inspect(lookup(babylonAST, traversal, 2), {
+        depth: err.depth,
+        colors: true,
+      })}
     `);
     throw err;
   }
@@ -90,9 +113,13 @@ describe("babylon-to-esprima", () => {
     it("should allow ast.analyze to be called without options", function() {
       var esAST = babelEslint.parse("`test`");
 
-      assert.doesNotThrow(() => {
-        escope.analyze(esAST);
-      }, TypeError, "Should allow no options argument.");
+      assert.doesNotThrow(
+        () => {
+          escope.analyze(esAST);
+        },
+        TypeError,
+        "Should allow no options argument."
+      );
     });
   });
 
@@ -138,11 +165,15 @@ describe("babylon-to-esprima", () => {
     });
 
     it("template with nested function/object", () => {
-      parseAndAssertSame("`outer${{x: {y: 10}}}bar${`nested${function(){return 1;}}endnest`}end`");
+      parseAndAssertSame(
+        "`outer${{x: {y: 10}}}bar${`nested${function(){return 1;}}endnest`}end`"
+      );
     });
 
     it("template with braces inside and outside of template string #96", () => {
-      parseAndAssertSame("if (a) { var target = `{}a:${webpackPort}{}}}}`; } else { app.use(); }");
+      parseAndAssertSame(
+        "if (a) { var target = `{}a:${webpackPort}{}}}}`; } else { app.use(); }"
+      );
     });
 
     it("template also with braces #96", () => {
@@ -218,19 +249,19 @@ describe("babylon-to-esprima", () => {
   });
 
   it("default import", () => {
-    parseAndAssertSame("import foo from \"foo\";");
+    parseAndAssertSame('import foo from "foo";');
   });
 
   it("import specifier", () => {
-    parseAndAssertSame("import { foo } from \"foo\";");
+    parseAndAssertSame('import { foo } from "foo";');
   });
 
   it("import specifier with name", () => {
-    parseAndAssertSame("import { foo as bar } from \"foo\";");
+    parseAndAssertSame('import { foo as bar } from "foo";');
   });
 
   it("import bare", () => {
-    parseAndAssertSame("import \"foo\";");
+    parseAndAssertSame('import "foo";');
   });
 
   it("export default class declaration", () => {
@@ -250,7 +281,7 @@ describe("babylon-to-esprima", () => {
   });
 
   it("export all", () => {
-    parseAndAssertSame("export * from \"foo\";");
+    parseAndAssertSame('export * from "foo";');
   });
 
   it("export named", () => {
@@ -331,11 +362,11 @@ describe("babylon-to-esprima", () => {
   });
 
   it("regexp in a template string", () => {
-    parseAndAssertSame("`${/\\d/.exec(\"1\")[0]}`");
+    parseAndAssertSame('`${/\\d/.exec("1")[0]}`');
   });
 
   it("first line is empty", () => {
-    parseAndAssertSame("\nimport Immutable from \"immutable\";");
+    parseAndAssertSame('\nimport Immutable from "immutable";');
   });
 
   it("empty", () => {
@@ -383,7 +414,9 @@ describe("babylon-to-esprima", () => {
     });
 
     it("MethodDefinition 2", () => {
-      parseAndAssertSame("export default class Bar { get bar() { return 42; }}");
+      parseAndAssertSame(
+        "export default class Bar { get bar() { return 42; }}"
+      );
     });
 
     it("ClassMethod", () => {
@@ -443,7 +476,7 @@ describe("babylon-to-esprima", () => {
 
     it("do not allow import export everywhere", () => {
       assert.throws(() => {
-        parseAndAssertSame("function F() { import a from \"a\"; }");
+        parseAndAssertSame('function F() { import a from "a"; }');
       }, /SyntaxError: 'import' and 'export' may only appear at the top level/);
     });
 
diff --git a/test/integration.js b/test/integration.js
index c446ed34..8e93631a 100644
--- a/test/integration.js
+++ b/test/integration.js
@@ -13,8 +13,8 @@ var errorLevel = 2;
 var baseEslintOpts = {
   parser: require.resolve(".."),
   parserOptions: {
-    sourceType: "script"
-  }
+    sourceType: "script",
+  },
 };
 
 /**
@@ -23,7 +23,7 @@ var baseEslintOpts = {
  * @param object opts
  * @param function done
  */
-function lint (opts, done) {
+function lint(opts, done) {
   readFixture(opts.fixture, (err, src) => {
     if (err) return done(err);
     done(null, eslint.linter.verify(src, opts.eslint));
@@ -35,14 +35,10 @@ function lint (opts, done) {
  * @param string|array id
  * @param function done
  */
-function readFixture (id, done) {
+function readFixture(id, done) {
   if (Array.isArray(id)) id = path.join.apply(path, id);
   if (!path.extname(id)) id += ".js";
-  fs.readFile(
-    path.join(paths.fixtures, id),
-    encoding,
-    done
-  );
+  fs.readFile(path.join(paths.fixtures, id), encoding, done);
 }
 // readFixture
 
@@ -51,7 +47,7 @@ describe("Rules:", () => {
 });
 // describe
 
-function strictSuite () {
+function strictSuite() {
   var ruleId = "strict";
 
   describe("when set to 'never'", () => {
@@ -60,19 +56,20 @@ function strictSuite () {
     });
     eslintOpts.rules[ruleId] = [errorLevel, "never"];
 
-    ["global-with", "function-with"].forEach((fixture) => {
-      it(`should error on ${fixture.match(/^[^-]+/)[0]} directive`,
-        (done) => {
-          lint({
+    ["global-with", "function-with"].forEach(fixture => {
+      it(`should error on ${fixture.match(/^[^-]+/)[0]} directive`, done => {
+        lint(
+          {
             fixture: ["strict", fixture],
             eslint: eslintOpts,
-          }, (err, report) => {
+          },
+          (err, report) => {
             if (err) return done(err);
             assert(report[0].ruleId === ruleId);
             done();
-          });
-        }
-      );
+          }
+        );
+      });
       // it
     });
   });
@@ -80,63 +77,75 @@ function strictSuite () {
 
   describe("when set to 'global'", () => {
     var eslintOpts = Object.assign({}, baseEslintOpts, {
-      rules: {}
+      rules: {},
     });
     eslintOpts.rules[ruleId] = [errorLevel, "global"];
 
-    it("shouldn't error on single global directive", (done) => {
-      lint({
-        fixture: ["strict", "global-with"],
-        eslint: eslintOpts,
-      }, (err, report) => {
-        if (err) return done(err);
-        assert(!report.length);
-        done();
-      });
+    it("shouldn't error on single global directive", done => {
+      lint(
+        {
+          fixture: ["strict", "global-with"],
+          eslint: eslintOpts,
+        },
+        (err, report) => {
+          if (err) return done(err);
+          assert(!report.length);
+          done();
+        }
+      );
     });
     // it
 
-    it("should error twice on global directive: no and function directive: yes", (done) => {
-      lint({
-        fixture: ["strict", "function-with"],
-        eslint: eslintOpts,
-      }, (err, report) => {
-        if (err) return done(err);
-        [0, 1].forEach((i) => {
-          assert(report[i].ruleId === ruleId);
-        });
-        done();
-      });
+    it("should error twice on global directive: no and function directive: yes", done => {
+      lint(
+        {
+          fixture: ["strict", "function-with"],
+          eslint: eslintOpts,
+        },
+        (err, report) => {
+          if (err) return done(err);
+          [0, 1].forEach(i => {
+            assert(report[i].ruleId === ruleId);
+          });
+          done();
+        }
+      );
     });
     // it
 
-    it("should error on function directive", (done) => {
-      lint({
-        fixture: ["strict", "global-with-function-with"],
-        eslint: eslintOpts,
-      }, (err, report) => {
-        if (err) return done(err);
-        assert(report[0].ruleId === ruleId);
-
-        // This is to make sure the test fails prior to adapting Babel AST
-        // directive representation to ESLint format. Otherwise it reports an
-        // error for missing global directive that masquerades as the expected
-        // result of the previous assertion.
-        assert(report[0].nodeType !== "Program");
-        done();
-      });
+    it("should error on function directive", done => {
+      lint(
+        {
+          fixture: ["strict", "global-with-function-with"],
+          eslint: eslintOpts,
+        },
+        (err, report) => {
+          if (err) return done(err);
+          assert(report[0].ruleId === ruleId);
+
+          // This is to make sure the test fails prior to adapting Babel AST
+          // directive representation to ESLint format. Otherwise it reports an
+          // error for missing global directive that masquerades as the expected
+          // result of the previous assertion.
+          assert(report[0].nodeType !== "Program");
+          done();
+        }
+      );
     });
     // it
 
-    it("should error on no directive", (done) => {
-      lint({
-        fixture: ["strict", "none"],
-        eslint: eslintOpts,
-      }, (err, report) => {
-        if (err) return done(err);
-        assert(report[0].ruleId === ruleId);
-        done();
-      });
+    it("should error on no directive", done => {
+      lint(
+        {
+          fixture: ["strict", "none"],
+          eslint: eslintOpts,
+        },
+        (err, report) => {
+          if (err) return done(err);
+          assert(report[0].ruleId === ruleId);
+          done();
+        }
+      );
     });
     // it
   });
@@ -144,108 +153,130 @@ function strictSuite () {
 
   describe("when set to 'function'", () => {
     var eslintOpts = Object.assign({}, baseEslintOpts, {
-      rules: {}
+      rules: {},
     });
     eslintOpts.rules[ruleId] = [errorLevel, "function"];
 
-    it("shouldn't error on single function directive", (done) => {
-      lint({
-        fixture: ["strict", "function-with"],
-        eslint: eslintOpts,
-      }, (err, report) => {
-        if (err) return done(err);
-        assert(!report.length);
-        done();
-      });
+    it("shouldn't error on single function directive", done => {
+      lint(
+        {
+          fixture: ["strict", "function-with"],
+          eslint: eslintOpts,
+        },
+        (err, report) => {
+          if (err) return done(err);
+          assert(!report.length);
+          done();
+        }
+      );
     });
     // it
 
-    it("should error twice on function directive: no and global directive: yes", (done) => {
-      lint({
-        fixture: ["strict", "global-with-function-without"],
-        eslint: eslintOpts,
-      }, (err, report) => {
-        if (err) return done(err);
-        [0, 1].forEach((i) => {
-          assert(report[i].ruleId === ruleId);
-        });
-        done();
-      });
+    it("should error twice on function directive: no and global directive: yes", done => {
+      lint(
+        {
+          fixture: ["strict", "global-with-function-without"],
+          eslint: eslintOpts,
+        },
+        (err, report) => {
+          if (err) return done(err);
+          [0, 1].forEach(i => {
+            assert(report[i].ruleId === ruleId);
+          });
+          done();
+        }
+      );
     });
     // it
 
-    it("should error on only global directive", (done) => {
-      lint({
-        fixture: ["strict", "global-with"],
-        eslint: eslintOpts,
-      }, (err, report) => {
-        if (err) return done(err);
-        assert(report[0].ruleId === ruleId);
-        done();
-      });
+    it("should error on only global directive", done => {
+      lint(
+        {
+          fixture: ["strict", "global-with"],
+          eslint: eslintOpts,
+        },
+        (err, report) => {
+          if (err) return done(err);
+          assert(report[0].ruleId === ruleId);
+          done();
+        }
+      );
     });
     // it
 
-    it("should error on extraneous global directive", (done) => {
-      lint({
-        fixture: ["strict", "global-with-function-with"],
-        eslint: eslintOpts,
-      }, (err, report) => {
-        if (err) return done(err);
-        assert(report[0].ruleId === ruleId);
-        assert(report[0].nodeType.indexOf("Function") === -1);
-        done();
-      });
+    it("should error on extraneous global directive", done => {
+      lint(
+        {
+          fixture: ["strict", "global-with-function-with"],
+          eslint: eslintOpts,
+        },
+        (err, report) => {
+          if (err) return done(err);
+          assert(report[0].ruleId === ruleId);
+          assert(report[0].nodeType.indexOf("Function") === -1);
+          done();
+        }
+      );
     });
     // it
   });
   // describe
-  describe("When \"codeFrame\"", () => {
+  describe('When "codeFrame"', () => {
     // Strip chalk colors, these are not relevant for the test
-    const stripAnsi = (str) => str.replace(
-      /[\u001b\u009b][[()#;?]*(?:[0-9]{1,4}(?:;[0-9]{0,4})*)?[0-9A-ORZcf-nqry=><]/g,
-      ""
-    );
-
-    it("should display codeFrame when option is absent", (done) => {
-      lint({
-        fixture: ["syntax-error"],
-        eslint: baseEslintOpts
-      }, (err, report) => {
-        if (err) return done(err);
-        assert(stripAnsi(report[0].message).indexOf("^\n  5 |") > -1);
-        done();
-      });
+    const stripAnsi = str =>
+      str.replace(
+        /[\u001b\u009b][[()#;?]*(?:[0-9]{1,4}(?:;[0-9]{0,4})*)?[0-9A-ORZcf-nqry=><]/g,
+        ""
+      );
+
+    it("should display codeFrame when option is absent", done => {
+      lint(
+        {
+          fixture: ["syntax-error"],
+          eslint: baseEslintOpts,
+        },
+        (err, report) => {
+          if (err) return done(err);
+          assert(stripAnsi(report[0].message).indexOf("^\n  5 |") > -1);
+          done();
+        }
+      );
     });
 
-    it("should display codeFrame when option is true", (done) => {
-      lint({
-        fixture: ["syntax-error"],
-        eslint: Object.assign({}, baseEslintOpts, {
-          parserOptions: {
-            codeFrame: true
-          }
-        })
-      }, (err, report) => {
-        if (err) return done(err);
-        assert(stripAnsi(report[0].message).indexOf("^\n  5 |") > -1);
-        done();
-      });
+    it("should display codeFrame when option is true", done => {
+      lint(
+        {
+          fixture: ["syntax-error"],
+          eslint: Object.assign({}, baseEslintOpts, {
+            parserOptions: {
+              codeFrame: true,
+            },
+          }),
+        },
+        (err, report) => {
+          if (err) return done(err);
+          assert(stripAnsi(report[0].message).indexOf("^\n  5 |") > -1);
+          done();
+        }
+      );
     });
 
-    it("should not display codeFrame when option is false", (done) => {
-      lint({
-        fixture: ["syntax-error"],
-        eslint: Object.assign({}, baseEslintOpts, {
-          parserOptions: {
-            codeFrame: false
-          }
-        })
-      }, (err, report) => {
-        if (err) return done(err);
-        assert(stripAnsi(report[0].message).indexOf("^\n  5 |") === -1);
-        done();
-      });
+    it("should not display codeFrame when option is false", done => {
+      lint(
+        {
+          fixture: ["syntax-error"],
+          eslint: Object.assign({}, baseEslintOpts, {
+            parserOptions: {
+              codeFrame: false,
+            },
+          }),
+        },
+        (err, report) => {
+          if (err) return done(err);
+          assert(stripAnsi(report[0].message).indexOf("^\n  5 |") === -1);
+          done();
+        }
+      );
     });
   });
 }
diff --git a/test/non-regression.js b/test/non-regression.js
index 26bf95af..f382801f 100644
--- a/test/non-regression.js
+++ b/test/non-regression.js
@@ -3,23 +3,29 @@
 var eslint = require("eslint");
 var unpad = require("dedent");
 
-function verifyAndAssertMessages(code, rules, expectedMessages, sourceType, overrideConfig) {
+function verifyAndAssertMessages(
+  code,
+  rules,
+  expectedMessages,
+  sourceType,
+  overrideConfig
+) {
   var config = {
     parser: require.resolve(".."),
     rules,
     env: {
       node: true,
-      es6: true
+      es6: true,
     },
     parserOptions: {
       ecmaVersion: 8,
       ecmaFeatures: {
         jsx: true,
         experimentalObjectRestSpread: true,
-        globalReturn: true
+        globalReturn: true,
       },
-      sourceType
-    }
+      sourceType,
+    },
   };
 
   if (overrideConfig) {
@@ -31,11 +37,19 @@ function verifyAndAssertMessages(code, rules, expectedMessages, sourceType, over
   var messages = eslint.linter.verify(code, config);
 
   if (messages.length !== expectedMessages.length) {
-    throw new Error(`Expected ${expectedMessages.length} message(s), got ${messages.length}\n${JSON.stringify(messages, null, 2)}`);
+    throw new Error(
+      `Expected ${expectedMessages.length} message(s), got ${messages.length}\n${JSON.stringify(
+        messages,
+        null,
+        2
+      )}`
+    );
   }
 
   messages.forEach((message, i) => {
-    var formatedMessage = `${message.line}:${message.column} ${message.message}${(message.ruleId ? ` ${message.ruleId}` : "")}`;
+    var formatedMessage = `${message.line}:${message.column} ${message.message}${message.ruleId
+      ? ` ${message.ruleId}`
+      : ""}`;
     if (formatedMessage !== expectedMessages[i]) {
       throw new Error(
         unpad(`
@@ -50,27 +64,21 @@ function verifyAndAssertMessages(code, rules, expectedMessages, sourceType, over
 
 describe("verify", () => {
   it("arrow function support (issue #1)", () => {
-    verifyAndAssertMessages(
-      "describe('stuff', () => {});",
-      {},
-      []
-    );
+    verifyAndAssertMessages("describe('stuff', () => {});", {}, []);
   });
 
   it("EOL validation (issue #2)", () => {
     verifyAndAssertMessages(
-      "module.exports = \"something\";",
-      { "eol-last": 1, "semi": 1 },
-      [ "1:30 Newline required at end of file but not found. eol-last" ]
+      'module.exports = "something";',
+      { "eol-last": 1, semi: 1 },
+      ["1:30 Newline required at end of file but not found. eol-last"]
     );
   });
 
   xit("Readable error messages (issue #3)", () => {
-    verifyAndAssertMessages(
-      "{ , res }",
-      {},
-      [ "1:3 Parsing error: Unexpected token" ]
-    );
+    verifyAndAssertMessages("{ , res }", {}, [
+      "1:3 Parsing error: Unexpected token",
+    ]);
   });
 
   it("Modules support (issue #5)", () => {
@@ -120,7 +128,7 @@ describe("verify", () => {
 
   it("JSX attribute names marked as variables (issue #12)", () => {
     verifyAndAssertMessages(
-      "module.exports = <div className=\"foo\" />",
+      'module.exports = <div className="foo" />',
       { "no-undef": 1 },
       []
     );
@@ -136,8 +144,8 @@ describe("verify", () => {
 
   it("Arrow function with non-block bodies (issue #20)", () => {
     verifyAndAssertMessages(
-      "\"use strict\"; () => 1",
-      { "strict": [1, "global"] },
+      '"use strict"; () => 1',
+      { strict: [1, "global"] },
       [],
       "script"
     );
@@ -145,7 +153,7 @@ describe("verify", () => {
 
   it("#242", () => {
     verifyAndAssertMessages(
-      "\"use strict\"; asdf;",
+      '"use strict"; asdf;',
       { "no-irregular-whitespace": 1 },
       [],
       {}
@@ -191,19 +199,11 @@ describe("verify", () => {
     });
 
     it("type alias", () => {
-      verifyAndAssertMessages(
-        "type SomeNewType = any;",
-        { "no-undef": 1 },
-        []
-      );
+      verifyAndAssertMessages("type SomeNewType = any;", { "no-undef": 1 }, []);
     });
 
     it("type cast expression #102", () => {
-      verifyAndAssertMessages(
-        "for (let a of (a: Array)) {}",
-        {},
-        []
-      );
+      verifyAndAssertMessages("for (let a of (a: Array)) {}", {}, []);
     });
 
     it("multiple nullable type annotations and return #108", () => {
@@ -231,7 +231,7 @@ describe("verify", () => {
           };
         `),
         { "no-unused-vars": 1, "no-undef": 1 },
-        [ "2:11 'Bar' is defined but never used. no-unused-vars" ]
+        ["2:11 'Bar' is defined but never used. no-unused-vars"]
       );
     });
 
@@ -246,7 +246,7 @@ describe("verify", () => {
           new Log();
         `),
         { "no-unused-vars": 1, "no-undef": 1 },
-        [ "3:34 'T4' is defined but never used. no-unused-vars" ]
+        ["3:34 'T4' is defined but never used. no-unused-vars"]
       );
     });
 
@@ -259,9 +259,11 @@ describe("verify", () => {
           new Foo();
         `),
         { "no-unused-vars": 1, "no-undef": 1 },
-        [ "1:1 'T' is not defined. no-undef",
+        [
+          "1:1 'T' is not defined. no-undef",
           "2:11 'T' is defined but never used. no-unused-vars",
-          "3:1 'T' is not defined. no-undef" ]
+          "3:1 'T' is not defined. no-undef",
+        ]
       );
     });
 
@@ -274,8 +276,10 @@ describe("verify", () => {
           }
         `),
         { "no-unused-vars": 1, "no-undef": 1 },
-        [ "2:11 'Log' is defined but never used. no-unused-vars",
-          "2:38 'T4' is defined but never used. no-unused-vars" ]
+        [
+          "2:11 'Log' is defined but never used. no-unused-vars",
+          "2:38 'T4' is defined but never used. no-unused-vars",
+        ]
       );
     });
 
@@ -288,9 +292,11 @@ describe("verify", () => {
           Foo;
         `),
         { "no-unused-vars": 1, "no-undef": 1 },
-        [ "1:1 'T' is not defined. no-undef",
+        [
+          "1:1 'T' is not defined. no-undef",
           "2:15 'T' is defined but never used. no-unused-vars",
-          "3:1 'T' is not defined. no-undef" ]
+          "3:1 'T' is not defined. no-undef",
+        ]
       );
     });
 
@@ -304,8 +310,10 @@ describe("verify", () => {
           };
         `),
         { "no-unused-vars": 1, "no-undef": 1 },
-        [ "2:6 'Log' is defined but never used. no-unused-vars",
-          "2:29 'T3' is defined but never used. no-unused-vars" ]
+        [
+          "2:6 'Log' is defined but never used. no-unused-vars",
+          "2:29 'T3' is defined but never used. no-unused-vars",
+        ]
       );
     });
 
@@ -318,9 +326,11 @@ describe("verify", () => {
           Foo;
         `),
         { "no-unused-vars": 1, "no-undef": 1 },
-        [ "1:1 'T' is not defined. no-undef",
+        [
+          "1:1 'T' is not defined. no-undef",
           "2:10 'T' is defined but never used. no-unused-vars",
-          "3:1 'T' is not defined. no-undef" ]
+          "3:1 'T' is not defined. no-undef",
+        ]
       );
     });
 
@@ -333,7 +343,7 @@ describe("verify", () => {
           log(1, 2);
         `),
         { "no-unused-vars": 1, "no-undef": 1 },
-        [ "3:37 'T4' is defined but never used. no-unused-vars" ]
+        ["3:37 'T4' is defined but never used. no-unused-vars"]
       );
     });
 
@@ -346,9 +356,11 @@ describe("verify", () => {
           log;
         `),
         { "no-unused-vars": 1, "no-undef": 1 },
-        [ "1:1 'T' is not defined. no-undef",
+        [
+          "1:1 'T' is not defined. no-undef",
           "2:14 'T' is defined but never used. no-unused-vars",
-          "3:1 'T' is not defined. no-undef" ]
+          "3:1 'T' is not defined. no-undef",
+        ]
       );
     });
 
@@ -544,8 +556,10 @@ describe("verify", () => {
           var b: T = 1; b;
         `),
         { "no-unused-vars": 1, "no-undef": 1 },
-        [ "1:21 'T' is defined but never used. no-unused-vars",
-          "2:8 'T' is not defined. no-undef" ]
+        [
+          "1:21 'T' is defined but never used. no-unused-vars",
+          "2:8 'T' is not defined. no-undef",
+        ]
       );
     });
 
@@ -556,7 +570,7 @@ describe("verify", () => {
           export class Foo extends Bar<T> {}
         `),
         { "no-unused-vars": 1, "no-undef": 1 },
-        [ "2:30 'T' is not defined. no-undef" ]
+        ["2:30 'T' is not defined. no-undef"]
       );
     });
 
@@ -581,8 +595,10 @@ describe("verify", () => {
           type T = {a: number, ...U, ...V};
         `),
         { "no-undef": 1, "no-unused-vars": 1 },
-        [ "2:6 'T' is defined but never used. no-unused-vars",
-          "2:31 'V' is not defined. no-undef" ]
+        [
+          "2:6 'T' is defined but never used. no-unused-vars",
+          "2:31 'V' is not defined. no-undef",
+        ]
       );
     });
 
@@ -1289,11 +1305,9 @@ describe("verify", () => {
   });
 
   it("detects minimal no-unused-vars case #120", () => {
-    verifyAndAssertMessages(
-      "var unused;",
-      { "no-unused-vars": 1 },
-      [ "1:5 'unused' is defined but never used. no-unused-vars" ]
-    );
+    verifyAndAssertMessages("var unused;", { "no-unused-vars": 1 }, [
+      "1:5 'unused' is defined but never used. no-unused-vars",
+    ]);
   });
 
   // This two tests are disabled, as the feature to visit properties when
@@ -1343,7 +1357,7 @@ describe("verify", () => {
     verifyAndAssertMessages(
       "const {Bacona} = require('baconjs')",
       { "no-undef": 1, "no-unused-vars": 1 },
-      [ "1:8 'Bacona' is assigned a value but never used. no-unused-vars" ]
+      ["1:8 'Bacona' is assigned a value but never used. no-unused-vars"]
     );
   });
 
@@ -1389,7 +1403,7 @@ describe("verify", () => {
 
   it("ternary and parens #149", () => {
     verifyAndAssertMessages(
-    "true ? (true) : false;",
+      "true ? (true) : false;",
       { "space-infix-ops": 1 },
       []
     );
@@ -1407,7 +1421,7 @@ describe("verify", () => {
         });
       `),
       { "space-in-parens": 1 },
-      [ ]
+      []
     );
   });
 
@@ -1425,21 +1439,23 @@ describe("verify", () => {
         });
       `),
       { "space-in-parens": 1 },
-      [ ]
+      []
     );
   });
 
   it("no no-undef error with rest #11", () => {
-    verifyAndAssertMessages("const [a, ...rest] = ['1', '2', '3']; a; rest;",
+    verifyAndAssertMessages(
+      "const [a, ...rest] = ['1', '2', '3']; a; rest;",
       { "no-undef": 1, "no-unused-vars": 1 },
-      [ ]
+      []
     );
   });
 
   it("async function with space-before-function-paren #168", () => {
-    verifyAndAssertMessages("it('handles updates', async function() {});",
+    verifyAndAssertMessages(
+      "it('handles updates', async function() {});",
       { "space-before-function-paren": [1, "never"] },
-      [ ]
+      []
     );
   });
 
@@ -1458,7 +1474,7 @@ describe("verify", () => {
         }
       `),
       { "no-unused-vars": 1, "no-undef": 1 },
-      [ ]
+      []
     );
   });
 
@@ -1469,16 +1485,12 @@ describe("verify", () => {
         var x = 1;
       `),
       { "no-use-before-define": 1 },
-      [ "1:13 'x' was used before it was defined. no-use-before-define" ]
+      ["1:13 'x' was used before it was defined. no-use-before-define"]
     );
   });
 
   it("jsx and stringliteral #216", () => {
-    verifyAndAssertMessages(
-      "<div className=''></div>",
-      {},
-      []
-    );
+    verifyAndAssertMessages("<div className=''></div>", {}, []);
   });
 
   it("getter/setter #218", () => {
@@ -1488,7 +1500,11 @@ describe("verify", () => {
             set a (v) { }
         }
       `),
-      { "space-before-function-paren": 1, "keyword-spacing": [1, { "before": true }], "indent": 1 },
+      {
+        "space-before-function-paren": 1,
+        "keyword-spacing": [1, { before: true }],
+        indent: 1,
+      },
       []
     );
   });
@@ -1531,7 +1547,7 @@ describe("verify", () => {
         var a = 123;
       `),
       { "no-redeclare": 1 },
-      [ "2:5 'a' is already defined. no-redeclare" ],
+      ["2:5 'a' is already defined. no-redeclare"],
       "script"
     );
   });
@@ -1543,7 +1559,7 @@ describe("verify", () => {
         var a = 123;
       `),
       { "no-redeclare": 1 },
-      [ "2:5 'a' is already defined. no-redeclare" ],
+      ["2:5 'a' is already defined. no-redeclare"],
       "module"
     );
   });
@@ -1552,11 +1568,13 @@ describe("verify", () => {
     verifyAndAssertMessages(
       "var leakedGlobal = 1;",
       { "no-implicit-globals": 1 },
-      [ "1:5 Implicit global variable, assign as global property instead. no-implicit-globals" ],
+      [
+        "1:5 Implicit global variable, assign as global property instead. no-implicit-globals",
+      ],
       "script",
       {
         env: {},
-        parserOptions: { ecmaVersion: 6, sourceType: "script" }
+        parserOptions: { ecmaVersion: 6, sourceType: "script" },
       }
     );
   });
@@ -1569,7 +1587,7 @@ describe("verify", () => {
       "module",
       {
         env: {},
-        parserOptions: { ecmaVersion: 6, sourceType: "module" }
+        parserOptions: { ecmaVersion: 6, sourceType: "module" },
       }
     );
   });
@@ -1582,7 +1600,7 @@ describe("verify", () => {
       null,
       {
         env: {},
-        parserOptions: { ecmaVersion: 6 }
+        parserOptions: { ecmaVersion: 6 },
       }
     );
   });
@@ -1599,26 +1617,23 @@ describe("verify", () => {
       "module",
       {
         env: {},
-        parserOptions: { ecmaVersion: 6, sourceType: "module", allowImportExportEverywhere: true }
+        parserOptions: {
+          ecmaVersion: 6,
+          sourceType: "module",
+          allowImportExportEverywhere: true,
+        },
       }
     );
   });
 
   it("with does not crash parsing in script mode (strict off) #171", () => {
-    verifyAndAssertMessages(
-      "with (arguments) { length; }",
-      {},
-      [],
-      "script"
-    );
+    verifyAndAssertMessages("with (arguments) { length; }", {}, [], "script");
   });
 
   xit("with does crash parsing in module mode (strict on) #171", () => {
-    verifyAndAssertMessages(
-      "with (arguments) { length; }",
-      {},
-      [ "1:1 Parsing error: 'with' in strict mode" ]
-    );
+    verifyAndAssertMessages("with (arguments) { length; }", {}, [
+      "1:1 Parsing error: 'with' in strict mode",
+    ]);
   });
 
   it("new.target is not reported as undef #235", () => {
@@ -1638,7 +1653,7 @@ describe("verify", () => {
         }
       `),
       { "no-undef": 1 },
-      [ "2:4 'test' is not defined. no-undef" ]
+      ["2:4 'test' is not defined. no-undef"]
     );
   });
 
@@ -1723,24 +1738,18 @@ describe("verify", () => {
           new A
         `),
         { "no-undef": 1, "no-unused-vars": 1, "no-redeclare": 1 },
-        [
-          "5:11 'b' is not defined. no-undef"
-        ]
+        ["5:11 'b' is not defined. no-undef"]
       );
     });
   });
 
   it("dynamic import support", () => {
-    verifyAndAssertMessages(
-      "import('test-module').then(() => {})",
-      {},
-      []
-    );
+    verifyAndAssertMessages("import('test-module').then(() => {})", {}, []);
   });
 
   it("regex with es6 unicodeCodePointEscapes", () => {
     verifyAndAssertMessages(
-      "string.replace(/[\u{0000A0}-\u{10FFFF}<>\&]/gmiu, (char) => `&#x${char.codePointAt(0).toString(16)};`);",
+      "string.replace(/[\u{0000A0}-\u{10FFFF}<>&]/gmiu, (char) => `&#x${char.codePointAt(0).toString(16)};`);",
       {},
       []
     );
diff --git a/yarn.lock b/yarn.lock
index 134eda3e..e2c20316 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -27,7 +27,7 @@ ajv@^4.7.0:
     co "^4.6.0"
     json-stable-stringify "^1.0.1"
 
-ansi-escapes@^1.1.0:
+ansi-escapes@^1.0.0, ansi-escapes@^1.1.0:
   version "1.4.0"
   resolved "https://registry.yarnpkg.com/ansi-escapes/-/ansi-escapes-1.4.0.tgz#d3a8a83b319aa67793662b13e761c7911422306e"
 
@@ -39,6 +39,10 @@ ansi-styles@^2.2.1:
   version "2.2.1"
   resolved "https://registry.yarnpkg.com/ansi-styles/-/ansi-styles-2.2.1.tgz#b432dd3358b634cf75e1e4664368240533c1ddbe"
 
+app-root-path@^2.0.0:
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/app-root-path/-/app-root-path-2.0.1.tgz#cd62dcf8e4fd5a417efc664d2e5b10653c651b46"
+
 argparse@^1.0.7:
   version "1.0.9"
   resolved "https://registry.yarnpkg.com/argparse/-/argparse-1.0.9.tgz#73d83bc263f86e97f8cc4f6bae1b0e90a7d22c86"
@@ -259,16 +263,31 @@ chalk@^1.0.0, chalk@^1.1.0, chalk@^1.1.1, chalk@^1.1.3:
     strip-ansi "^3.0.0"
     supports-color "^2.0.0"
 
+ci-info@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/ci-info/-/ci-info-1.0.0.tgz#dc5285f2b4e251821683681c381c3388f46ec534"
+
 circular-json@^0.3.1:
   version "0.3.1"
   resolved "https://registry.yarnpkg.com/circular-json/-/circular-json-0.3.1.tgz#be8b36aefccde8b3ca7aa2d6afc07a37242c0d2d"
 
-cli-cursor@^1.0.1:
+cli-cursor@^1.0.1, cli-cursor@^1.0.2:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/cli-cursor/-/cli-cursor-1.0.2.tgz#64da3f7d56a54412e59794bd62dc35295e8f2987"
   dependencies:
     restore-cursor "^1.0.1"
 
+cli-spinners@^0.1.2:
+  version "0.1.2"
+  resolved "https://registry.yarnpkg.com/cli-spinners/-/cli-spinners-0.1.2.tgz#bb764d88e185fb9e1e6a2a1f19772318f605e31c"
+
+cli-truncate@^0.2.1:
+  version "0.2.1"
+  resolved "https://registry.yarnpkg.com/cli-truncate/-/cli-truncate-0.2.1.tgz#9f15cfbb0705005369216c626ac7d05ab90dd574"
+  dependencies:
+    slice-ansi "0.0.4"
+    string-width "^1.0.1"
+
 cli-width@^2.0.0:
   version "2.1.0"
   resolved "https://registry.yarnpkg.com/cli-width/-/cli-width-2.1.0.tgz#b234ca209b29ef66fc518d9b98d5847b00edf00a"
@@ -281,7 +300,7 @@ code-point-at@^1.0.0:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/code-point-at/-/code-point-at-1.1.0.tgz#0d070b4d043a5bea33a2f1a40e2edb3d9a4ccf77"
 
-commander@2.9.0:
+commander@2.9.0, commander@^2.9.0:
   version "2.9.0"
   resolved "https://registry.yarnpkg.com/commander/-/commander-2.9.0.tgz#9c99094176e12240cb22d6c5146098400fe0f7d4"
   dependencies:
@@ -307,12 +326,37 @@ core-util-is@~1.0.0:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/core-util-is/-/core-util-is-1.0.2.tgz#b5fd54220aa2bc5ab57aab7140c940754503c1a7"
 
+cosmiconfig@^1.1.0:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/cosmiconfig/-/cosmiconfig-1.1.0.tgz#0dea0f9804efdfb929fbb1b188e25553ea053d37"
+  dependencies:
+    graceful-fs "^4.1.2"
+    js-yaml "^3.4.3"
+    minimist "^1.2.0"
+    object-assign "^4.0.1"
+    os-homedir "^1.0.1"
+    parse-json "^2.2.0"
+    pinkie-promise "^2.0.0"
+    require-from-string "^1.1.0"
+
+cross-spawn@^5.0.1:
+  version "5.1.0"
+  resolved "https://registry.yarnpkg.com/cross-spawn/-/cross-spawn-5.1.0.tgz#e8bd0efee58fcff6f8f94510a0a554bbfa235449"
+  dependencies:
+    lru-cache "^4.0.1"
+    shebang-command "^1.2.0"
+    which "^1.2.9"
+
 d@1:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/d/-/d-1.0.0.tgz#754bb5bfe55451da69a58b94d45f4c5b0462d58f"
   dependencies:
     es5-ext "^0.10.9"
 
+date-fns@^1.27.2:
+  version "1.28.5"
+  resolved "https://registry.yarnpkg.com/date-fns/-/date-fns-1.28.5.tgz#257cfc45d322df45ef5658665967ee841cd73faf"
+
 debug@2.2.0:
   version "2.2.0"
   resolved "https://registry.yarnpkg.com/debug/-/debug-2.2.0.tgz#f87057e995b1a1f6ae6a4960664137bc56f039da"
@@ -356,6 +400,16 @@ doctrine@^2.0.0:
     esutils "^2.0.2"
     isarray "^1.0.0"
 
+elegant-spinner@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/elegant-spinner/-/elegant-spinner-1.0.1.tgz#db043521c95d7e303fd8f345bedc3349cfb0729e"
+
+error-ex@^1.2.0:
+  version "1.3.1"
+  resolved "https://registry.yarnpkg.com/error-ex/-/error-ex-1.3.1.tgz#f855a86ce61adc4e8621c3cda21e7a7612c3a8dc"
+  dependencies:
+    is-arrayish "^0.2.1"
+
 es5-ext@^0.10.14, es5-ext@^0.10.9, es5-ext@~0.10.14:
   version "0.10.15"
   resolved "https://registry.yarnpkg.com/es5-ext/-/es5-ext-0.10.15.tgz#c330a5934c1ee21284a7c081a86e5fd937c91ea6"
@@ -421,9 +475,9 @@ escope@^3.6.0:
     esrecurse "^4.1.0"
     estraverse "^4.1.1"
 
-eslint-config-babel@^6.0.0:
-  version "6.0.0"
-  resolved "https://registry.yarnpkg.com/eslint-config-babel/-/eslint-config-babel-6.0.0.tgz#66feedf6ce6e04abe585cec1a65b5bcc96bed50a"
+eslint-config-babel@^7.0.1:
+  version "7.0.1"
+  resolved "https://registry.yarnpkg.com/eslint-config-babel/-/eslint-config-babel-7.0.1.tgz#aac7b79f2f06f52358a5a764fdc01fde23718572"
 
 eslint-plugin-flowtype@^2.30.3:
   version "2.30.3"
@@ -431,6 +485,13 @@ eslint-plugin-flowtype@^2.30.3:
   dependencies:
     lodash "^4.15.0"
 
+eslint-plugin-prettier@^2.1.2:
+  version "2.1.2"
+  resolved "https://registry.yarnpkg.com/eslint-plugin-prettier/-/eslint-plugin-prettier-2.1.2.tgz#4b90f4ee7f92bfbe2e926017e1ca40eb628965ea"
+  dependencies:
+    fast-diff "^1.1.1"
+    jest-docblock "^20.0.1"
+
 eslint@^3.18.0:
   version "3.18.0"
   resolved "https://registry.yarnpkg.com/eslint/-/eslint-3.18.0.tgz#647e985c4ae71502d20ac62c109f66d5104c8a4b"
@@ -514,15 +575,31 @@ event-emitter@~0.3.5:
     d "1"
     es5-ext "~0.10.14"
 
+execa@^0.7.0:
+  version "0.7.0"
+  resolved "https://registry.yarnpkg.com/execa/-/execa-0.7.0.tgz#944becd34cc41ee32a63a9faf27ad5a65fc59777"
+  dependencies:
+    cross-spawn "^5.0.1"
+    get-stream "^3.0.0"
+    is-stream "^1.1.0"
+    npm-run-path "^2.0.0"
+    p-finally "^1.0.0"
+    signal-exit "^3.0.0"
+    strip-eof "^1.0.0"
+
 exit-hook@^1.0.0:
   version "1.1.1"
   resolved "https://registry.yarnpkg.com/exit-hook/-/exit-hook-1.1.1.tgz#f05ca233b48c05d54fff07765df8507e95c02ff8"
 
+fast-diff@^1.1.1:
+  version "1.1.1"
+  resolved "https://registry.yarnpkg.com/fast-diff/-/fast-diff-1.1.1.tgz#0aea0e4e605b6a2189f0e936d4b7fbaf1b7cfd9b"
+
 fast-levenshtein@~2.0.4:
   version "2.0.6"
   resolved "https://registry.yarnpkg.com/fast-levenshtein/-/fast-levenshtein-2.0.6.tgz#3d8a5c66883a16a30ca8643e851f19baa7797917"
 
-figures@^1.3.5:
+figures@^1.3.5, figures@^1.7.0:
   version "1.7.0"
   resolved "https://registry.yarnpkg.com/figures/-/figures-1.7.0.tgz#cbe1e3affcf1cd44b80cadfed28dc793a9701d2e"
   dependencies:
@@ -536,6 +613,10 @@ file-entry-cache@^2.0.0:
     flat-cache "^1.2.1"
     object-assign "^4.0.1"
 
+find-parent-dir@^0.3.0:
+  version "0.3.0"
+  resolved "https://registry.yarnpkg.com/find-parent-dir/-/find-parent-dir-0.3.0.tgz#33c44b429ab2b2f0646299c5f9f718f376ff8d54"
+
 flat-cache@^1.2.1:
   version "1.2.2"
   resolved "https://registry.yarnpkg.com/flat-cache/-/flat-cache-1.2.2.tgz#fa86714e72c21db88601761ecf2f555d1abc6b96"
@@ -559,6 +640,10 @@ generate-object-property@^1.1.0:
   dependencies:
     is-property "^1.0.0"
 
+get-stream@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/get-stream/-/get-stream-3.0.0.tgz#8e943d1358dc37555054ecbe2edb05aa174ede14"
+
 glob@7.0.5:
   version "7.0.5"
   resolved "https://registry.yarnpkg.com/glob/-/glob-7.0.5.tgz#b4202a69099bbb4d292a7c1b95b6682b67ebdc95"
@@ -618,6 +703,15 @@ has-flag@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/has-flag/-/has-flag-1.0.0.tgz#9d9e793165ce017a00f00418c43f942a7b1d11fa"
 
+husky@^0.13.2:
+  version "0.13.4"
+  resolved "https://registry.yarnpkg.com/husky/-/husky-0.13.4.tgz#48785c5028de3452a51c48c12c4f94b2124a1407"
+  dependencies:
+    chalk "^1.1.3"
+    find-parent-dir "^0.3.0"
+    is-ci "^1.0.9"
+    normalize-path "^1.0.0"
+
 ignore@^3.2.0:
   version "3.2.6"
   resolved "https://registry.yarnpkg.com/ignore/-/ignore-3.2.6.tgz#26e8da0644be0bb4cb39516f6c79f0e0f4ffe48c"
@@ -626,6 +720,16 @@ imurmurhash@^0.1.4:
   version "0.1.4"
   resolved "https://registry.yarnpkg.com/imurmurhash/-/imurmurhash-0.1.4.tgz#9218b9b2b928a238b13dc4fb6b6d576f231453ea"
 
+indent-string@^2.1.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/indent-string/-/indent-string-2.1.0.tgz#8e2d48348742121b4a8218b7a137e9a52049dc80"
+  dependencies:
+    repeating "^2.0.0"
+
+indent-string@^3.0.0:
+  version "3.1.0"
+  resolved "https://registry.yarnpkg.com/indent-string/-/indent-string-3.1.0.tgz#08ff4334603388399b329e6b9538dc7a3cf5de7d"
+
 inflight@^1.0.4:
   version "1.0.6"
   resolved "https://registry.yarnpkg.com/inflight/-/inflight-1.0.6.tgz#49bd6331d7d02d0c09bc910a1075ba8165b56df9"
@@ -665,6 +769,22 @@ invariant@^2.2.0:
   dependencies:
     loose-envify "^1.0.0"
 
+is-arrayish@^0.2.1:
+  version "0.2.1"
+  resolved "https://registry.yarnpkg.com/is-arrayish/-/is-arrayish-0.2.1.tgz#77c99840527aa8ecb1a8ba697b80645a7a926a9d"
+
+is-ci@^1.0.9:
+  version "1.0.10"
+  resolved "https://registry.yarnpkg.com/is-ci/-/is-ci-1.0.10.tgz#f739336b2632365061a9d48270cd56ae3369318e"
+  dependencies:
+    ci-info "^1.0.0"
+
+is-finite@^1.0.0:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/is-finite/-/is-finite-1.0.2.tgz#cc6677695602be550ef11e8b4aa6305342b6d0aa"
+  dependencies:
+    number-is-nan "^1.0.0"
+
 is-fullwidth-code-point@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/is-fullwidth-code-point/-/is-fullwidth-code-point-1.0.0.tgz#ef9e31386f031a7f0d643af82fde50c457ef00cb"
@@ -700,6 +820,10 @@ is-path-inside@^1.0.0:
   dependencies:
     path-is-inside "^1.0.1"
 
+is-promise@^2.1.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/is-promise/-/is-promise-2.1.0.tgz#79a2a9ece7f096e80f36d2b2f3bc16c1ff4bf3fa"
+
 is-property@^1.0.0:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/is-property/-/is-property-1.0.2.tgz#57fe1c4e48474edd65b09911f26b1cd4095dda84"
@@ -710,15 +834,27 @@ is-resolvable@^1.0.0:
   dependencies:
     tryit "^1.0.1"
 
+is-stream@^1.1.0:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/is-stream/-/is-stream-1.1.0.tgz#12d4a3dd4e68e0b79ceb8dbc84173ae80d91ca44"
+
 isarray@^1.0.0, isarray@~1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/isarray/-/isarray-1.0.0.tgz#bb935d48582cba168c06834957a54a3e07124f11"
 
+isexe@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/isexe/-/isexe-2.0.0.tgz#e8fbf374dc556ff8947a10dcb0572d633f2cfa10"
+
+jest-docblock@^20.0.1:
+  version "20.0.3"
+  resolved "https://registry.yarnpkg.com/jest-docblock/-/jest-docblock-20.0.3.tgz#17bea984342cc33d83c50fbe1545ea0efaa44712"
+
 js-tokens@^3.0.0:
   version "3.0.1"
   resolved "https://registry.yarnpkg.com/js-tokens/-/js-tokens-3.0.1.tgz#08e9f132484a2c45a30907e9dc4d5567b7f114d7"
 
-js-yaml@^3.5.1:
+js-yaml@^3.4.3, js-yaml@^3.5.1:
   version "3.8.2"
   resolved "https://registry.yarnpkg.com/js-yaml/-/js-yaml-3.8.2.tgz#02d3e2c0f6beab20248d412c352203827d786721"
   dependencies:
@@ -750,6 +886,67 @@ levn@^0.3.0, levn@~0.3.0:
     prelude-ls "~1.1.2"
     type-check "~0.3.2"
 
+lint-staged@^3.6.1:
+  version "3.6.1"
+  resolved "https://registry.yarnpkg.com/lint-staged/-/lint-staged-3.6.1.tgz#24423c8b7bd99d96e15acd1ac8cb392a78e58582"
+  dependencies:
+    app-root-path "^2.0.0"
+    cosmiconfig "^1.1.0"
+    execa "^0.7.0"
+    listr "^0.12.0"
+    lodash.chunk "^4.2.0"
+    minimatch "^3.0.0"
+    npm-which "^3.0.1"
+    p-map "^1.1.1"
+    staged-git-files "0.0.4"
+
+listr-silent-renderer@^1.1.1:
+  version "1.1.1"
+  resolved "https://registry.yarnpkg.com/listr-silent-renderer/-/listr-silent-renderer-1.1.1.tgz#924b5a3757153770bf1a8e3fbf74b8bbf3f9242e"
+
+listr-update-renderer@^0.2.0:
+  version "0.2.0"
+  resolved "https://registry.yarnpkg.com/listr-update-renderer/-/listr-update-renderer-0.2.0.tgz#ca80e1779b4e70266807e8eed1ad6abe398550f9"
+  dependencies:
+    chalk "^1.1.3"
+    cli-truncate "^0.2.1"
+    elegant-spinner "^1.0.1"
+    figures "^1.7.0"
+    indent-string "^3.0.0"
+    log-symbols "^1.0.2"
+    log-update "^1.0.2"
+    strip-ansi "^3.0.1"
+
+listr-verbose-renderer@^0.4.0:
+  version "0.4.0"
+  resolved "https://registry.yarnpkg.com/listr-verbose-renderer/-/listr-verbose-renderer-0.4.0.tgz#44dc01bb0c34a03c572154d4d08cde9b1dc5620f"
+  dependencies:
+    chalk "^1.1.3"
+    cli-cursor "^1.0.2"
+    date-fns "^1.27.2"
+    figures "^1.7.0"
+
+listr@^0.12.0:
+  version "0.12.0"
+  resolved "https://registry.yarnpkg.com/listr/-/listr-0.12.0.tgz#6bce2c0f5603fa49580ea17cd6a00cc0e5fa451a"
+  dependencies:
+    chalk "^1.1.3"
+    cli-truncate "^0.2.1"
+    figures "^1.7.0"
+    indent-string "^2.1.0"
+    is-promise "^2.1.0"
+    is-stream "^1.1.0"
+    listr-silent-renderer "^1.1.1"
+    listr-update-renderer "^0.2.0"
+    listr-verbose-renderer "^0.4.0"
+    log-symbols "^1.0.2"
+    log-update "^1.0.2"
+    ora "^0.2.3"
+    p-map "^1.1.1"
+    rxjs "^5.0.0-beta.11"
+    stream-to-observable "^0.1.0"
+    strip-ansi "^3.0.1"
+
 lodash._baseassign@^3.0.0:
   version "3.2.0"
   resolved "https://registry.yarnpkg.com/lodash._baseassign/-/lodash._baseassign-3.2.0.tgz#8c38a099500f215ad09e59f1722fd0c52bfe0a4e"
@@ -773,6 +970,10 @@ lodash._isiterateecall@^3.0.0:
   version "3.0.9"
   resolved "https://registry.yarnpkg.com/lodash._isiterateecall/-/lodash._isiterateecall-3.0.9.tgz#5203ad7ba425fae842460e696db9cf3e6aac057c"
 
+lodash.chunk@^4.2.0:
+  version "4.2.0"
+  resolved "https://registry.yarnpkg.com/lodash.chunk/-/lodash.chunk-4.2.0.tgz#66e5ce1f76ed27b4303d8c6512e8d1216e8106bc"
+
 lodash.create@3.1.1:
   version "3.1.1"
   resolved "https://registry.yarnpkg.com/lodash.create/-/lodash.create-3.1.1.tgz#d7f2849f0dbda7e04682bb8cd72ab022461debe7"
@@ -805,13 +1006,33 @@ lodash@^4.0.0, lodash@^4.15.0, lodash@^4.2.0, lodash@^4.3.0:
   version "4.17.4"
   resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.4.tgz#78203a4d1c328ae1d86dca6460e369b57f4055ae"
 
+log-symbols@^1.0.2:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/log-symbols/-/log-symbols-1.0.2.tgz#376ff7b58ea3086a0f09facc74617eca501e1a18"
+  dependencies:
+    chalk "^1.0.0"
+
+log-update@^1.0.2:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/log-update/-/log-update-1.0.2.tgz#19929f64c4093d2d2e7075a1dad8af59c296b8d1"
+  dependencies:
+    ansi-escapes "^1.0.0"
+    cli-cursor "^1.0.2"
+
 loose-envify@^1.0.0:
   version "1.3.1"
   resolved "https://registry.yarnpkg.com/loose-envify/-/loose-envify-1.3.1.tgz#d1a8ad33fa9ce0e713d65fdd0ac8b748d478c848"
   dependencies:
     js-tokens "^3.0.0"
 
-minimatch@^3.0.2:
+lru-cache@^4.0.1:
+  version "4.1.1"
+  resolved "https://registry.yarnpkg.com/lru-cache/-/lru-cache-4.1.1.tgz#622e32e82488b49279114a4f9ecf45e7cd6bba55"
+  dependencies:
+    pseudomap "^1.0.2"
+    yallist "^2.1.2"
+
+minimatch@^3.0.0, minimatch@^3.0.2:
   version "3.0.3"
   resolved "https://registry.yarnpkg.com/minimatch/-/minimatch-3.0.3.tgz#2a4e4090b96b2db06a9d7df01055a62a77c9b774"
   dependencies:
@@ -821,6 +1042,10 @@ minimist@0.0.8:
   version "0.0.8"
   resolved "https://registry.yarnpkg.com/minimist/-/minimist-0.0.8.tgz#857fcabfc3397d2625b8228262e86aa7a011b05d"
 
+minimist@^1.2.0:
+  version "1.2.0"
+  resolved "https://registry.yarnpkg.com/minimist/-/minimist-1.2.0.tgz#a35008b20f41383eec1fb914f4cd5df79a264284"
+
 mkdirp@0.5.1, mkdirp@^0.5.0, mkdirp@^0.5.1:
   version "0.5.1"
   resolved "https://registry.yarnpkg.com/mkdirp/-/mkdirp-0.5.1.tgz#30057438eac6cf7f8c4767f38648d6697d75c903"
@@ -859,6 +1084,30 @@ natural-compare@^1.4.0:
   version "1.4.0"
   resolved "https://registry.yarnpkg.com/natural-compare/-/natural-compare-1.4.0.tgz#4abebfeed7541f2c27acfb29bdbbd15c8d5ba4f7"
 
+normalize-path@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/normalize-path/-/normalize-path-1.0.0.tgz#32d0e472f91ff345701c15a8311018d3b0a90379"
+
+npm-path@^2.0.2:
+  version "2.0.3"
+  resolved "https://registry.yarnpkg.com/npm-path/-/npm-path-2.0.3.tgz#15cff4e1c89a38da77f56f6055b24f975dfb2bbe"
+  dependencies:
+    which "^1.2.10"
+
+npm-run-path@^2.0.0:
+  version "2.0.2"
+  resolved "https://registry.yarnpkg.com/npm-run-path/-/npm-run-path-2.0.2.tgz#35a9232dfa35d7067b4cb2ddf2357b1871536c5f"
+  dependencies:
+    path-key "^2.0.0"
+
+npm-which@^3.0.1:
+  version "3.0.1"
+  resolved "https://registry.yarnpkg.com/npm-which/-/npm-which-3.0.1.tgz#9225f26ec3a285c209cae67c3b11a6b4ab7140aa"
+  dependencies:
+    commander "^2.9.0"
+    npm-path "^2.0.2"
+    which "^1.2.10"
+
 number-is-nan@^1.0.0:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/number-is-nan/-/number-is-nan-1.0.1.tgz#097b602b53422a522c1afb8790318336941a011d"
@@ -888,10 +1137,33 @@ optionator@^0.8.2:
     type-check "~0.3.2"
     wordwrap "~1.0.0"
 
-os-homedir@^1.0.0:
+ora@^0.2.3:
+  version "0.2.3"
+  resolved "https://registry.yarnpkg.com/ora/-/ora-0.2.3.tgz#37527d220adcd53c39b73571d754156d5db657a4"
+  dependencies:
+    chalk "^1.1.1"
+    cli-cursor "^1.0.2"
+    cli-spinners "^0.1.2"
+    object-assign "^4.0.1"
+
+os-homedir@^1.0.0, os-homedir@^1.0.1:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/os-homedir/-/os-homedir-1.0.2.tgz#ffbc4988336e0e833de0c168c7ef152121aa7fb3"
 
+p-finally@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/p-finally/-/p-finally-1.0.0.tgz#3fbcfb15b899a44123b34b6dcc18b724336a2cae"
+
+p-map@^1.1.1:
+  version "1.1.1"
+  resolved "https://registry.yarnpkg.com/p-map/-/p-map-1.1.1.tgz#05f5e4ae97a068371bc2a5cc86bfbdbc19c4ae7a"
+
+parse-json@^2.2.0:
+  version "2.2.0"
+  resolved "https://registry.yarnpkg.com/parse-json/-/parse-json-2.2.0.tgz#f480f40434ef80741f8469099f8dea18f55a4dc9"
+  dependencies:
+    error-ex "^1.2.0"
+
 path-is-absolute@^1.0.0:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/path-is-absolute/-/path-is-absolute-1.0.1.tgz#174b9268735534ffbc7ace6bf53a5a9e1b5c5f5f"
@@ -900,6 +1172,10 @@ path-is-inside@^1.0.1:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/path-is-inside/-/path-is-inside-1.0.2.tgz#365417dede44430d1c11af61027facf074bdfc53"
 
+path-key@^2.0.0:
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/path-key/-/path-key-2.0.1.tgz#411cadb574c5a140d3a4b1910d40d80cc9f40b40"
+
 path-parse@^1.0.5:
   version "1.0.5"
   resolved "https://registry.yarnpkg.com/path-parse/-/path-parse-1.0.5.tgz#3c1adf871ea9cd6c9431b6ea2bd74a0ff055c4c1"
@@ -926,6 +1202,10 @@ prelude-ls@~1.1.2:
   version "1.1.2"
   resolved "https://registry.yarnpkg.com/prelude-ls/-/prelude-ls-1.1.2.tgz#21932a549f5e52ffd9a827f570e04be62a97da54"
 
+prettier@1.4.4:
+  version "1.4.4"
+  resolved "https://registry.yarnpkg.com/prettier/-/prettier-1.4.4.tgz#a8d1447b14c9bf67e6d420dcadd10fb9a4fad65a"
+
 process-nextick-args@~1.0.6:
   version "1.0.7"
   resolved "https://registry.yarnpkg.com/process-nextick-args/-/process-nextick-args-1.0.7.tgz#150e20b756590ad3f91093f25a4f2ad8bff30ba3"
@@ -934,6 +1214,10 @@ progress@^1.1.8:
   version "1.1.8"
   resolved "https://registry.yarnpkg.com/progress/-/progress-1.1.8.tgz#e260c78f6161cdd9b0e56cc3e0a85de17c7a57be"
 
+pseudomap@^1.0.2:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/pseudomap/-/pseudomap-1.0.2.tgz#f052a28da70e618917ef0a8ac34c1ae5a68286b3"
+
 readable-stream@^2.2.2:
   version "2.2.6"
   resolved "https://registry.yarnpkg.com/readable-stream/-/readable-stream-2.2.6.tgz#8b43aed76e71483938d12a8d46c6cf1a00b1f816"
@@ -964,6 +1248,16 @@ regenerator-runtime@^0.10.0:
   version "0.10.3"
   resolved "https://registry.yarnpkg.com/regenerator-runtime/-/regenerator-runtime-0.10.3.tgz#8c4367a904b51ea62a908ac310bf99ff90a82a3e"
 
+repeating@^2.0.0:
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/repeating/-/repeating-2.0.1.tgz#5214c53a926d3552707527fbab415dbc08d06dda"
+  dependencies:
+    is-finite "^1.0.0"
+
+require-from-string@^1.1.0:
+  version "1.2.1"
+  resolved "https://registry.yarnpkg.com/require-from-string/-/require-from-string-1.2.1.tgz#529c9ccef27380adfec9a2f965b649bbee636418"
+
 require-uncached@^1.0.2:
   version "1.0.3"
   resolved "https://registry.yarnpkg.com/require-uncached/-/require-uncached-1.0.3.tgz#4e0d56d6c9662fd31e43011c4b95aa49955421d3"
@@ -1004,6 +1298,22 @@ rx-lite@^3.1.2:
   version "3.1.2"
   resolved "https://registry.yarnpkg.com/rx-lite/-/rx-lite-3.1.2.tgz#19ce502ca572665f3b647b10939f97fd1615f102"
 
+rxjs@^5.0.0-beta.11:
+  version "5.4.1"
+  resolved "https://registry.yarnpkg.com/rxjs/-/rxjs-5.4.1.tgz#b62f757f279445d265a18a58fb0a70dc90e91626"
+  dependencies:
+    symbol-observable "^1.0.1"
+
+shebang-command@^1.2.0:
+  version "1.2.0"
+  resolved "https://registry.yarnpkg.com/shebang-command/-/shebang-command-1.2.0.tgz#44aac65b695b03398968c39f363fee5deafdf1ea"
+  dependencies:
+    shebang-regex "^1.0.0"
+
+shebang-regex@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/shebang-regex/-/shebang-regex-1.0.0.tgz#da42f49740c0b42db2ca9728571cb190c98efea3"
+
 shelljs@^0.7.5:
   version "0.7.7"
   resolved "https://registry.yarnpkg.com/shelljs/-/shelljs-0.7.7.tgz#b2f5c77ef97148f4b4f6e22682e10bba8667cff1"
@@ -1012,6 +1322,10 @@ shelljs@^0.7.5:
     interpret "^1.0.0"
     rechoir "^0.6.2"
 
+signal-exit@^3.0.0:
+  version "3.0.2"
+  resolved "https://registry.yarnpkg.com/signal-exit/-/signal-exit-3.0.2.tgz#b5fdc08f1287ea1178628e415e25132b73646c6d"
+
 slice-ansi@0.0.4:
   version "0.0.4"
   resolved "https://registry.yarnpkg.com/slice-ansi/-/slice-ansi-0.0.4.tgz#edbf8903f66f7ce2f8eafd6ceed65e264c831b35"
@@ -1020,6 +1334,14 @@ sprintf-js@~1.0.2:
   version "1.0.3"
   resolved "https://registry.yarnpkg.com/sprintf-js/-/sprintf-js-1.0.3.tgz#04e6926f662895354f3dd015203633b857297e2c"
 
+staged-git-files@0.0.4:
+  version "0.0.4"
+  resolved "https://registry.yarnpkg.com/staged-git-files/-/staged-git-files-0.0.4.tgz#d797e1b551ca7a639dec0237dc6eb4bb9be17d35"
+
+stream-to-observable@^0.1.0:
+  version "0.1.0"
+  resolved "https://registry.yarnpkg.com/stream-to-observable/-/stream-to-observable-0.1.0.tgz#45bf1d9f2d7dc09bed81f1c307c430e68b84cffe"
+
 string-width@^1.0.1:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/string-width/-/string-width-1.0.2.tgz#118bdf5b8cdc51a2a7e70d211e07e2b0b9b107d3"
@@ -1039,7 +1361,7 @@ string_decoder@~0.10.x:
   version "0.10.31"
   resolved "https://registry.yarnpkg.com/string_decoder/-/string_decoder-0.10.31.tgz#62e203bc41766c6c28c9fc84301dab1c5310fa94"
 
-strip-ansi@^3.0.0:
+strip-ansi@^3.0.0, strip-ansi@^3.0.1:
   version "3.0.1"
   resolved "https://registry.yarnpkg.com/strip-ansi/-/strip-ansi-3.0.1.tgz#6a385fb8853d952d5ff05d0e8aaf94278dc63dcf"
   dependencies:
@@ -1049,6 +1371,10 @@ strip-bom@^3.0.0:
   version "3.0.0"
   resolved "https://registry.yarnpkg.com/strip-bom/-/strip-bom-3.0.0.tgz#2334c18e9c759f7bdd56fdef7e9ae3d588e68ed3"
 
+strip-eof@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/strip-eof/-/strip-eof-1.0.0.tgz#bb43ff5598a6eb05d89b59fcd129c983313606bf"
+
 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"
@@ -1063,6 +1389,10 @@ supports-color@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/supports-color/-/supports-color-2.0.0.tgz#535d045ce6b6363fa40117084629995e9df324c7"
 
+symbol-observable@^1.0.1:
+  version "1.0.4"
+  resolved "https://registry.yarnpkg.com/symbol-observable/-/symbol-observable-1.0.4.tgz#29bf615d4aa7121bdd898b22d4b3f9bc4e2aa03d"
+
 table@^3.7.8:
   version "3.8.3"
   resolved "https://registry.yarnpkg.com/table/-/table-3.8.3.tgz#2bbc542f0fda9861a755d3947fefd8b3f513855f"
@@ -1110,6 +1440,12 @@ util-deprecate@~1.0.1:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/util-deprecate/-/util-deprecate-1.0.2.tgz#450d4dc9fa70de732762fbd2d4a28981419a0ccf"
 
+which@^1.2.10, which@^1.2.9:
+  version "1.2.14"
+  resolved "https://registry.yarnpkg.com/which/-/which-1.2.14.tgz#9a87c4378f03e827cecaf1acdf56c736c01c14e5"
+  dependencies:
+    isexe "^2.0.0"
+
 wordwrap@~1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/wordwrap/-/wordwrap-1.0.0.tgz#27584810891456a4171c8d0226441ade90cbcaeb"
@@ -1127,3 +1463,7 @@ write@^0.2.1:
 xtend@^4.0.0:
   version "4.0.1"
   resolved "https://registry.yarnpkg.com/xtend/-/xtend-4.0.1.tgz#a5c6d532be656e23db820efb943a1f04998d63af"
+
+yallist@^2.1.2:
+  version "2.1.2"
+  resolved "https://registry.yarnpkg.com/yallist/-/yallist-2.1.2.tgz#1c11f9218f076089a47dd512f93c6699a6a81d52"