diff --git a/.eslintignore b/.eslintignore
new file mode 100644
index 0000000..09a8422
--- /dev/null
+++ b/.eslintignore
@@ -0,0 +1 @@
+!.eslintrc.js
diff --git a/.eslintrc.js b/.eslintrc.js
new file mode 100644
index 0000000..c2069e4
--- /dev/null
+++ b/.eslintrc.js
@@ -0,0 +1,25 @@
+module.exports = {
+  extends: [
+    'eslint-config-airbnb-base',
+    'eslint-config-prettier',
+    'plugin:ava/recommended',
+  ],
+  plugins: ['eslint-plugin-prettier', 'eslint-plugin-ava'],
+  env: {
+    commonjs: true,
+    node: true,
+  },
+  rules: {
+    'class-methods-use-this': 'off',
+    'no-shadow': 'off',
+    'no-underscore-dangle': 'off',
+    'prettier/prettier': [
+      'error',
+      {
+        singleQuote: true,
+        trailingComma: 'es5',
+        bracketSpacing: true,
+      },
+    ],
+  },
+};
diff --git a/.travis.yml b/.travis.yml
index 33feb23..ed77fc9 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -3,8 +3,8 @@ language: node_js
 cache: yarn
 node_js:
 - '6.11.5'
-- '7'
 - '8'
+- '10'
 install:
 - yarn install --frozen-lockfile
 before_install:
@@ -12,4 +12,5 @@ before_install:
 - curl -sSfL https://yarnpkg.com/install.sh | bash
 - export PATH=$HOME/.yarn/bin:$PATH
 script:
+- yarn lint
 - yarn test
diff --git a/package.json b/package.json
index 7514b6a..be73e0a 100644
--- a/package.json
+++ b/package.json
@@ -17,6 +17,7 @@
   "license": "MPL-2.0",
   "scripts": {
     "test": "ava test",
+    "lint": "eslint src test .eslintrc.js",
     "changelog": "changelog mozilla-neutrino/webpack-chain all --markdown > CHANGELOG.md"
   },
   "dependencies": {
@@ -26,6 +27,13 @@
   "devDependencies": {
     "ava": "^0.25.0",
     "changelog": "^1.4.0",
+    "eslint": "^4.19.1",
+    "eslint-config-airbnb-base": "^12.1.0",
+    "eslint-config-prettier": "^2.9.0",
+    "eslint-plugin-ava": "^4.5.1",
+    "eslint-plugin-import": "^2.11.0",
+    "eslint-plugin-prettier": "^2.6.0",
+    "prettier": "^1.12.1",
     "webpack": "^4.5.0"
   }
 }
diff --git a/src/ChainedMap.js b/src/ChainedMap.js
index 2c7b4d6..00822de 100644
--- a/src/ChainedMap.js
+++ b/src/ChainedMap.js
@@ -9,7 +9,7 @@ module.exports = class extends Chainable {
 
   extend(methods) {
     this.shorthands = methods;
-    methods.map(method => {
+    methods.forEach(method => {
       this[method] = value => this.set(method, value);
     });
     return this;
@@ -58,6 +58,8 @@ module.exports = class extends Chainable {
     if (order.length) {
       return entries;
     }
+
+    return undefined;
   }
 
   values() {
@@ -80,50 +82,57 @@ module.exports = class extends Chainable {
   }
 
   merge(obj, omit = []) {
-    Object
-      .keys(obj)
-      .forEach(key => {
-        if (omit.includes(key)) {
-          return;
-        }
-
-        const value = obj[key];
-
-        if ((!Array.isArray(value) && typeof value !== 'object') || value === null || !this.has(key)) {
-          this.set(key, value);
-        } else {
-          this.set(key, merge(this.get(key), value));
-        }
-      });
+    Object.keys(obj).forEach(key => {
+      if (omit.includes(key)) {
+        return;
+      }
+
+      const value = obj[key];
+
+      if (
+        (!Array.isArray(value) && typeof value !== 'object') ||
+        value === null ||
+        !this.has(key)
+      ) {
+        this.set(key, value);
+      } else {
+        this.set(key, merge(this.get(key), value));
+      }
+    });
 
     return this;
   }
 
   clean(obj) {
-    return Object
-      .keys(obj)
-      .reduce((acc, key) => {
-        const value = obj[key];
+    return Object.keys(obj).reduce((acc, key) => {
+      const value = obj[key];
 
-        if (value === undefined) {
-          return acc;
-        }
+      if (value === undefined) {
+        return acc;
+      }
 
-        if (Array.isArray(value) && !value.length) {
-          return acc;
-        }
+      if (Array.isArray(value) && !value.length) {
+        return acc;
+      }
 
-        if (Object.prototype.toString.call(value) === '[object Object]' && !Object.keys(value).length) {
-          return acc;
-        }
+      if (
+        Object.prototype.toString.call(value) === '[object Object]' &&
+        !Object.keys(value).length
+      ) {
+        return acc;
+      }
 
-        acc[key] = value;
+      acc[key] = value;
 
-        return acc;
-      }, {});
+      return acc;
+    }, {});
   }
 
-  when(condition, whenTruthy = Function.prototype, whenFalsy = Function.prototype) {
+  when(
+    condition,
+    whenTruthy = Function.prototype,
+    whenFalsy = Function.prototype
+  ) {
     if (condition) {
       whenTruthy(this);
     } else {
diff --git a/src/ChainedSet.js b/src/ChainedSet.js
index 100a0c4..ea469da 100644
--- a/src/ChainedSet.js
+++ b/src/ChainedSet.js
@@ -39,7 +39,11 @@ module.exports = class extends Chainable {
     return this;
   }
 
-  when(condition, whenTruthy = Function.prototype, whenFalsy = Function.prototype) {
+  when(
+    condition,
+    whenTruthy = Function.prototype,
+    whenFalsy = Function.prototype
+  ) {
     if (condition) {
       whenTruthy(this);
     } else {
diff --git a/src/Config.js b/src/Config.js
index 9ead87d..dc9ccea 100644
--- a/src/Config.js
+++ b/src/Config.js
@@ -39,7 +39,7 @@ module.exports = class extends ChainedMap {
       'stats',
       'target',
       'watch',
-      'watchOptions'
+      'watchOptions',
     ]);
   }
 
@@ -62,69 +62,76 @@ module.exports = class extends ChainedMap {
   toConfig() {
     const entryPoints = this.entryPoints.entries() || {};
 
-    return this.clean(Object.assign(this.entries() || {}, {
-      node: this.node.entries(),
-      output: this.output.entries(),
-      resolve: this.resolve.toConfig(),
-      resolveLoader: this.resolveLoader.toConfig(),
-      devServer: this.devServer.toConfig(),
-      module: this.module.toConfig(),
-      optimization: this.optimization.entries(),
-      plugins: this.plugins.values().map(plugin => plugin.toConfig()),
-      performance: this.performance.entries(),
-      entry: Object
-        .keys(entryPoints)
-        .reduce((acc, key) => Object.assign(acc, { [key]: entryPoints[key].values() }), {})
-    }));
+    return this.clean(
+      Object.assign(this.entries() || {}, {
+        node: this.node.entries(),
+        output: this.output.entries(),
+        resolve: this.resolve.toConfig(),
+        resolveLoader: this.resolveLoader.toConfig(),
+        devServer: this.devServer.toConfig(),
+        module: this.module.toConfig(),
+        optimization: this.optimization.entries(),
+        plugins: this.plugins.values().map(plugin => plugin.toConfig()),
+        performance: this.performance.entries(),
+        entry: Object.keys(entryPoints).reduce(
+          (acc, key) =>
+            Object.assign(acc, { [key]: entryPoints[key].values() }),
+          {}
+        ),
+      })
+    );
   }
 
-  toString({
-    verbose = false,
-    configPrefix = 'config'
-  } = {}) {
+  toString({ verbose = false, configPrefix = 'config' } = {}) {
+    // eslint-disable-next-line global-require
     const stringify = require('javascript-stringify');
-
     const config = this.toConfig();
 
-    return stringify(config, (value, indent, stringify) => {
-      // improve plugin output
-      if (value && value.__pluginName) {
-        const prefix = `/* ${configPrefix}.plugin('${value.__pluginName}') */\n`;
-        const constructorName = value.__pluginConstructorName;
-
-        if (constructorName) {
-          // get correct indentation for args by stringifying the args array and
-          // discarding the square brackets.
-          const args = stringify(value.__pluginArgs).slice(1, -1);
-          return prefix + `new ${constructorName}(${args})`;
-        } else {
+    return stringify(
+      config,
+      (value, indent, stringify) => {
+        // improve plugin output
+        if (value && value.__pluginName) {
+          const prefix = `/* ${configPrefix}.plugin('${
+            value.__pluginName
+          }') */\n`;
+          const constructorName = value.__pluginConstructorName;
+
+          if (constructorName) {
+            // get correct indentation for args by stringifying the args array and
+            // discarding the square brackets.
+            const args = stringify(value.__pluginArgs).slice(1, -1);
+            return `${prefix}new ${constructorName}(${args})`;
+          }
           return prefix + stringify({ args: value.__pluginArgs || [] });
         }
-      }
 
-      // improve rule/use output
-      if (value && value.__ruleNames) {
-        const prefix = `/* ${configPrefix}.module.rule('${
-          value.__ruleNames[0]
-        }')${
-          value.__ruleNames.slice(1).map(r => `.oneOf('${r}')`).join('')
-        }${
-          value.__useName ? `.use('${value.__useName}')` : ``
-        } */\n`;
-        return prefix + stringify(value);
-      }
+        // improve rule/use output
+        if (value && value.__ruleNames) {
+          const prefix = `/* ${configPrefix}.module.rule('${
+            value.__ruleNames[0]
+          }')${value.__ruleNames
+            .slice(1)
+            .map(r => `.oneOf('${r}')`)
+            .join('')}${
+            value.__useName ? `.use('${value.__useName}')` : ``
+          } */\n`;
+          return prefix + stringify(value);
+        }
 
-      // shorten long functions
-      if (typeof value === 'function') {
-        if (value.__expression) {
-          return value.__expression;
-        } else if (!verbose && value.toString().length > 100) {
-          return `function () { /* omitted long function */ }`;
+        // shorten long functions
+        if (typeof value === 'function') {
+          if (value.__expression) {
+            return value.__expression;
+          } else if (!verbose && value.toString().length > 100) {
+            return `function () { /* omitted long function */ }`;
+          }
         }
-      }
 
-      return stringify(value);
-    }, 2);
+        return stringify(value);
+      },
+      2
+    );
   }
 
   merge(obj = {}, omit = []) {
@@ -136,19 +143,19 @@ module.exports = class extends ChainedMap {
       'devServer',
       'optimization',
       'performance',
-      'module'
+      'module',
     ];
 
     if (!omit.includes('entry') && 'entry' in obj) {
-      Object
-        .keys(obj.entry)
-        .forEach(name => this.entry(name).merge(obj.entry[name]));
+      Object.keys(obj.entry).forEach(name =>
+        this.entry(name).merge(obj.entry[name])
+      );
     }
 
     if (!omit.includes('plugin') && 'plugin' in obj) {
-      Object
-        .keys(obj.plugin)
-        .forEach(name => this.plugin(name).merge(obj.plugin[name]));
+      Object.keys(obj.plugin).forEach(name =>
+        this.plugin(name).merge(obj.plugin[name])
+      );
     }
 
     omissions.forEach(key => {
diff --git a/src/DevServer.js b/src/DevServer.js
index a960a9a..23c1363 100644
--- a/src/DevServer.js
+++ b/src/DevServer.js
@@ -1,6 +1,5 @@
 const ChainedMap = require('./ChainedMap');
 const ChainedSet = require('./ChainedSet');
-const merge = require('deepmerge');
 
 module.exports = class extends ChainedMap {
   constructor(parent) {
@@ -44,14 +43,19 @@ module.exports = class extends ChainedMap {
       'stdin',
       'useLocalIp',
       'watchContentBase',
-      'watchOptions'
+      'watchOptions',
     ]);
   }
 
   toConfig() {
-    return this.clean(Object.assign({
-      allowedHosts: this.allowedHosts.values(),
-    }, this.entries() || {}));
+    return this.clean(
+      Object.assign(
+        {
+          allowedHosts: this.allowedHosts.values(),
+        },
+        this.entries() || {}
+      )
+    );
   }
 
   merge(obj, omit = []) {
diff --git a/src/Module.js b/src/Module.js
index 1e88d0b..3f247a6 100644
--- a/src/Module.js
+++ b/src/Module.js
@@ -26,23 +26,25 @@ module.exports = class extends ChainedMap {
   }
 
   toConfig() {
-    return this.clean(Object.assign(this.entries() || {}, {
-      defaultRules: this.defaultRules.values().map(r => r.toConfig()),
-      rules: this.rules.values().map(r => r.toConfig())
-    }));
+    return this.clean(
+      Object.assign(this.entries() || {}, {
+        defaultRules: this.defaultRules.values().map(r => r.toConfig()),
+        rules: this.rules.values().map(r => r.toConfig()),
+      })
+    );
   }
 
   merge(obj, omit = []) {
     if (!omit.includes('rule') && 'rule' in obj) {
-      Object
-        .keys(obj.rule)
-        .forEach(name => this.rule(name).merge(obj.rule[name]));
+      Object.keys(obj.rule).forEach(name =>
+        this.rule(name).merge(obj.rule[name])
+      );
     }
 
     if (!omit.includes('defaultRule') && 'defaultRule' in obj) {
-      Object
-        .keys(obj.defaultRule)
-        .forEach(name => this.defaultRule(name).merge(obj.defaultRule[name]));
+      Object.keys(obj.defaultRule).forEach(name =>
+        this.defaultRule(name).merge(obj.defaultRule[name])
+      );
     }
 
     return super.merge(obj, ['rule', 'defaultRule']);
diff --git a/src/Orderable.js b/src/Orderable.js
index 7d8e5d3..abb8a07 100644
--- a/src/Orderable.js
+++ b/src/Orderable.js
@@ -1,31 +1,40 @@
-module.exports = (Class) => class extends Class {
-  before(name) {
-    if (this.__after) {
-      throw new Error(`Unable to set .before(${JSON.stringify(name)}) with existing value for .after()`);
+module.exports = Class =>
+  class extends Class {
+    before(name) {
+      if (this.__after) {
+        throw new Error(
+          `Unable to set .before(${JSON.stringify(
+            name
+          )}) with existing value for .after()`
+        );
+      }
+
+      this.__before = name;
+      return this;
     }
 
-    this.__before = name;
-    return this;
-  }
+    after(name) {
+      if (this.__before) {
+        throw new Error(
+          `Unable to set .after(${JSON.stringify(
+            name
+          )}) with existing value for .before()`
+        );
+      }
 
-  after(name) {
-    if (this.__before) {
-      throw new Error(`Unable to set .after(${JSON.stringify(name)}) with existing value for .before()`);
+      this.__after = name;
+      return this;
     }
 
-    this.__after = name;
-    return this;
-  }
+    merge(obj, omit = []) {
+      if (obj.before) {
+        this.before(obj.before);
+      }
 
-  merge(obj, omit = []) {
-    if (obj.before) {
-      this.before(obj.before);
-    }
+      if (obj.after) {
+        this.after(obj.after);
+      }
 
-    if (obj.after) {
-      this.after(obj.after);
+      return super.merge(obj, [...omit, 'before', 'after']);
     }
-
-    return super.merge(obj, [...omit, 'before', 'after']);
-  }
-};
\ No newline at end of file
+  };
diff --git a/src/Performance.js b/src/Performance.js
index c94ca12..79c23fa 100644
--- a/src/Performance.js
+++ b/src/Performance.js
@@ -3,11 +3,6 @@ const ChainedMap = require('./ChainedMap');
 module.exports = class extends ChainedMap {
   constructor(parent) {
     super(parent);
-    this.extend([
-      'assetFilter',
-      'hints',
-      'maxAssetSize',
-      'maxEntrypointSize'
-    ]);
+    this.extend(['assetFilter', 'hints', 'maxAssetSize', 'maxEntrypointSize']);
   }
 };
diff --git a/src/Plugin.js b/src/Plugin.js
index 276ef76..0f5c335 100644
--- a/src/Plugin.js
+++ b/src/Plugin.js
@@ -1,53 +1,53 @@
 const ChainedMap = require('./ChainedMap');
 const Orderable = require('./Orderable');
 
-module.exports = Orderable(class extends ChainedMap {
-  constructor(parent, name) {
-    super(parent);
-    this.name = name;
-    this.extend(['init']);
+module.exports = Orderable(
+  class extends ChainedMap {
+    constructor(parent, name) {
+      super(parent);
+      this.name = name;
+      this.extend(['init']);
+
+      this.init((Plugin, args = []) => new Plugin(...args));
+    }
 
-    this.init((Plugin, args = []) => new Plugin(...args));
-  }
+    use(plugin, args = []) {
+      return this.set('plugin', plugin).set('args', args);
+    }
 
-  use(plugin, args = []) {
-    return this
-      .set('plugin', plugin)
-      .set('args', args);
-  }
+    tap(f) {
+      this.set('args', f(this.get('args') || []));
+      return this;
+    }
 
-  tap(f) {
-    this.set('args', f(this.get('args') || []));
-    return this;
-  }
+    merge(obj, omit = []) {
+      if ('plugin' in obj) {
+        this.set('plugin', obj.plugin);
+      }
 
-  merge(obj, omit = []) {
-    if ('plugin' in obj) {
-      this.set('plugin', obj.plugin);
-    }
+      if ('args' in obj) {
+        this.set('args', obj.args);
+      }
 
-    if ('args' in obj) {
-      this.set('args', obj.args);
+      return super.merge(obj, [...omit, 'args', 'plugin']);
     }
 
-    return super.merge(obj, [...omit, 'args', 'plugin']);
-  }
+    toConfig() {
+      const init = this.get('init');
+      const plugin = this.get('plugin');
+      const constructorName = plugin.__expression
+        ? `(${plugin.__expression})`
+        : plugin.name;
 
-  toConfig() {
-    const init = this.get('init');
-    const plugin = this.get('plugin');
-    const constructorName = plugin.__expression
-      ? `(${plugin.__expression})`
-      : plugin.name;
+      const config = init(this.get('plugin'), this.get('args'));
 
-    const config = init(this.get('plugin'), this.get('args'));
+      Object.defineProperties(config, {
+        __pluginName: { value: this.name },
+        __pluginArgs: { value: this.get('args') },
+        __pluginConstructorName: { value: constructorName },
+      });
 
-    Object.defineProperties(config, {
-      __pluginName: { value: this.name },
-      __pluginArgs: { value: this.get('args') },
-      __pluginConstructorName: { value: constructorName }
-    });
-
-    return config;
+      return config;
+    }
   }
-});
+);
diff --git a/src/Resolve.js b/src/Resolve.js
index 0c3fe1e..ed94243 100644
--- a/src/Resolve.js
+++ b/src/Resolve.js
@@ -1,7 +1,6 @@
 const ChainedMap = require('./ChainedMap');
 const ChainedSet = require('./ChainedSet');
 const Plugin = require('./Plugin');
-const merge = require('deepmerge');
 
 module.exports = class extends ChainedMap {
   constructor(parent) {
@@ -34,16 +33,18 @@ module.exports = class extends ChainedMap {
   }
 
   toConfig() {
-    return this.clean(Object.assign(this.entries() || {}, {
-      alias: this.alias.entries(),
-      aliasFields: this.aliasFields.values(),
-      descriptionFiles: this.descriptionFiles.values(),
-      extensions: this.extensions.values(),
-      mainFields: this.mainFields.values(),
-      mainFiles: this.mainFiles.values(),
-      modules: this.modules.values(),
-      plugins: this.plugins.values().map(plugin => plugin.toConfig())
-    }));
+    return this.clean(
+      Object.assign(this.entries() || {}, {
+        alias: this.alias.entries(),
+        aliasFields: this.aliasFields.values(),
+        descriptionFiles: this.descriptionFiles.values(),
+        extensions: this.extensions.values(),
+        mainFields: this.mainFields.values(),
+        mainFiles: this.mainFiles.values(),
+        modules: this.modules.values(),
+        plugins: this.plugins.values().map(plugin => plugin.toConfig()),
+      })
+    );
   }
 
   merge(obj, omit = []) {
@@ -55,7 +56,7 @@ module.exports = class extends ChainedMap {
       'mainFields',
       'mainFiles',
       'modules',
-      'plugins'
+      'plugins',
     ];
 
     omissions.forEach(key => {
diff --git a/src/ResolveLoader.js b/src/ResolveLoader.js
index ffe230a..0825e66 100644
--- a/src/ResolveLoader.js
+++ b/src/ResolveLoader.js
@@ -1,6 +1,5 @@
 const ChainedMap = require('./ChainedMap');
 const ChainedSet = require('./ChainedSet');
-const merge = require('deepmerge');
 
 module.exports = class extends ChainedMap {
   constructor(parent) {
@@ -12,12 +11,17 @@ module.exports = class extends ChainedMap {
   }
 
   toConfig() {
-    return this.clean(Object.assign({
-      extensions: this.extensions.values(),
-      modules: this.modules.values(),
-      moduleExtensions: this.moduleExtensions.values(),
-      packageMains: this.packageMains.values()
-    }, this.entries() || {}));
+    return this.clean(
+      Object.assign(
+        {
+          extensions: this.extensions.values(),
+          modules: this.modules.values(),
+          moduleExtensions: this.moduleExtensions.values(),
+          packageMains: this.packageMains.values(),
+        },
+        this.entries() || {}
+      )
+    );
   }
 
   merge(obj, omit = []) {
@@ -25,7 +29,7 @@ module.exports = class extends ChainedMap {
       'extensions',
       'modules',
       'moduleExtensions',
-      'packageMains'
+      'packageMains',
     ];
 
     omissions.forEach(key => {
diff --git a/src/Rule.js b/src/Rule.js
index 6667f50..f845961 100644
--- a/src/Rule.js
+++ b/src/Rule.js
@@ -26,7 +26,7 @@ module.exports = class Rule extends ChainedMap {
       'resourceQuery',
       'sideEffects',
       'test',
-      'type'
+      'type',
     ]);
   }
 
@@ -55,15 +55,17 @@ module.exports = class Rule extends ChainedMap {
   }
 
   toConfig() {
-    const config = this.clean(Object.assign(this.entries() || {}, {
-      include: this.include.values(),
-      exclude: this.exclude.values(),
-      oneOf: this.oneOfs.values().map(oneOf => oneOf.toConfig()),
-      use: this.uses.values().map(use => use.toConfig())
-    }));
+    const config = this.clean(
+      Object.assign(this.entries() || {}, {
+        include: this.include.values(),
+        exclude: this.exclude.values(),
+        oneOf: this.oneOfs.values().map(oneOf => oneOf.toConfig()),
+        use: this.uses.values().map(use => use.toConfig()),
+      })
+    );
 
     Object.defineProperties(config, {
-      __ruleNames: { value: this.names }
+      __ruleNames: { value: this.names },
     });
 
     return config;
@@ -79,21 +81,26 @@ module.exports = class Rule extends ChainedMap {
     }
 
     if (!omit.includes('use') && 'use' in obj) {
-      Object
-        .keys(obj.use)
-        .forEach(name => this.use(name).merge(obj.use[name]));
+      Object.keys(obj.use).forEach(name => this.use(name).merge(obj.use[name]));
     }
 
     if (!omit.includes('oneOf') && 'oneOf' in obj) {
-      Object
-        .keys(obj.oneOf)
-        .forEach(name => this.oneOf(name).merge(obj.oneOf[name]));
+      Object.keys(obj.oneOf).forEach(name =>
+        this.oneOf(name).merge(obj.oneOf[name])
+      );
     }
 
     if (!omit.includes('test') && 'test' in obj) {
       this.test(obj.test instanceof RegExp ? obj.test : new RegExp(obj.test));
     }
 
-    return super.merge(obj, [...omit, 'include', 'exclude', 'use', 'oneOf', 'test']);
+    return super.merge(obj, [
+      ...omit,
+      'include',
+      'exclude',
+      'use',
+      'oneOf',
+      'test',
+    ]);
   }
 };
diff --git a/src/Use.js b/src/Use.js
index 3fe7bb2..c298a60 100644
--- a/src/Use.js
+++ b/src/Use.js
@@ -2,38 +2,40 @@ const ChainedMap = require('./ChainedMap');
 const Orderable = require('./Orderable');
 const merge = require('deepmerge');
 
-module.exports = Orderable(class extends ChainedMap {
-  constructor(parent, name) {
-    super(parent);
-    this.name = name;
-    this.extend(['loader', 'options']);
-  }
-
-  tap(f) {
-    this.options(f(this.get('options')));
-    return this;
-  }
-
-  merge(obj, omit = []) {
-    if (!omit.includes('loader') && 'loader' in obj) {
-      this.loader(obj.loader);
+module.exports = Orderable(
+  class extends ChainedMap {
+    constructor(parent, name) {
+      super(parent);
+      this.name = name;
+      this.extend(['loader', 'options']);
     }
 
-    if (!omit.includes('options') && 'options' in obj) {
-      this.options(merge(this.store.get('options') || {}, obj.options));
+    tap(f) {
+      this.options(f(this.get('options')));
+      return this;
     }
 
-    return super.merge(obj, [...omit, 'loader', 'options']);
-  }
+    merge(obj, omit = []) {
+      if (!omit.includes('loader') && 'loader' in obj) {
+        this.loader(obj.loader);
+      }
 
-  toConfig() {
-    const config = this.clean(this.entries() || {});
+      if (!omit.includes('options') && 'options' in obj) {
+        this.options(merge(this.store.get('options') || {}, obj.options));
+      }
 
-    Object.defineProperties(config, {
-      __useName: { value: this.name },
-      __ruleNames: { value: this.parent && this.parent.names }
-    });
+      return super.merge(obj, [...omit, 'loader', 'options']);
+    }
+
+    toConfig() {
+      const config = this.clean(this.entries() || {});
 
-    return config;
+      Object.defineProperties(config, {
+        __useName: { value: this.name },
+        __ruleNames: { value: this.parent && this.parent.names },
+      });
+
+      return config;
+    }
   }
-});
+);
diff --git a/test/Chainable.js b/test/Chainable.js
index ab99e04..616f3a5 100644
--- a/test/Chainable.js
+++ b/test/Chainable.js
@@ -10,7 +10,7 @@ test('Calling .end() returns parent', t => {
 
 test('Using .batch() receives context', t => {
   const chain = new Chainable();
-  const context = chain.batch((current) => {
+  const context = chain.batch(current => {
     t.is(current, chain);
   });
 
diff --git a/test/ChainedMap.js b/test/ChainedMap.js
index 214f18d..2ca69ae 100644
--- a/test/ChainedMap.js
+++ b/test/ChainedMap.js
@@ -81,7 +81,7 @@ test('entries with values', t => {
   map.set('b', 'beta');
   map.set('c', 'gamma');
 
-  t.deepEqual(map.entries(), { a: 'alpha', b: 'beta', c: 'gamma'});
+  t.deepEqual(map.entries(), { a: 'alpha', b: 'beta', c: 'gamma' });
 });
 
 test('entries with no values', t => {
@@ -92,7 +92,7 @@ test('entries with no values', t => {
 
 test('merge with no values', t => {
   const map = new ChainedMap();
-  const obj = { a: 'alpha', b: 'beta', c: 'gamma'};
+  const obj = { a: 'alpha', b: 'beta', c: 'gamma' };
 
   t.is(map.merge(obj), map);
   t.deepEqual(map.entries(), obj);
@@ -100,7 +100,7 @@ test('merge with no values', t => {
 
 test('merge with existing values', t => {
   const map = new ChainedMap();
-  const obj = { a: 'alpha', b: 'beta', c: 'gamma'};
+  const obj = { a: 'alpha', b: 'beta', c: 'gamma' };
 
   map.set('d', 'delta');
 
@@ -110,7 +110,7 @@ test('merge with existing values', t => {
 
 test('merge with overriding values', t => {
   const map = new ChainedMap();
-  const obj = { a: 'alpha', b: 'beta', c: 'gamma'};
+  const obj = { a: 'alpha', b: 'beta', c: 'gamma' };
 
   map.set('b', 'delta');
 
@@ -120,7 +120,7 @@ test('merge with overriding values', t => {
 
 test('merge with omitting keys', t => {
   const map = new ChainedMap();
-  const obj = { a: 'alpha', b: 'beta', c: 'gamma'};
+  const obj = { a: 'alpha', b: 'beta', c: 'gamma' };
 
   map.merge(obj, ['b']);
 
diff --git a/test/Config.js b/test/Config.js
index 4ffcd54..e386def 100644
--- a/test/Config.js
+++ b/test/Config.js
@@ -1,6 +1,6 @@
 import test from 'ava';
-import Config from '../src/Config';
 import { validate } from 'webpack';
+import Config from '../src/Config';
 
 class StringifyPlugin {
   constructor(...args) {
@@ -24,7 +24,7 @@ test('shorthand methods', t => {
   const config = new Config();
   const obj = {};
 
-  config.shorthands.map(method => {
+  config.shorthands.forEach(method => {
     obj[method] = 'alpha';
     t.is(config[method]('alpha'), config);
   });
@@ -46,17 +46,24 @@ test('node', t => {
 test('entry', t => {
   const config = new Config();
 
-  config.entry('index')
+  config
+    .entry('index')
     .add('babel-polyfill')
     .add('src/index.js');
 
   t.true(config.entryPoints.has('index'));
-  t.deepEqual(config.entryPoints.get('index').values(), ['babel-polyfill', 'src/index.js']);
+  t.deepEqual(config.entryPoints.get('index').values(), [
+    'babel-polyfill',
+    'src/index.js',
+  ]);
 });
 
 test('plugin empty', t => {
   const config = new Config();
-  const instance = config.plugin('stringify').use(StringifyPlugin).end();
+  const instance = config
+    .plugin('stringify')
+    .use(StringifyPlugin)
+    .end();
 
   t.is(instance, config);
   t.true(config.plugins.has('stringify'));
@@ -81,75 +88,77 @@ test('toConfig empty', t => {
 test('toConfig with values', t => {
   const config = new Config();
 
-  config
-    .output
-      .path('build')
-      .end()
+  config.output
+    .path('build')
+    .end()
     .mode('development')
-    .node
-      .set('__dirname', 'mock')
-      .end()
-    .optimization
-      .nodeEnv('PRODUCTION')
-      .end()
+    .node.set('__dirname', 'mock')
+    .end()
+    .optimization.nodeEnv('PRODUCTION')
+    .end()
     .target('node')
     .plugin('stringify')
-      .use(StringifyPlugin)
-      .end()
-    .module
-      .defaultRule('inline')
-        .use('banner')
-          .loader('banner-loader')
-          .options({ prefix: 'banner-prefix.txt' })
-          .end()
-        .end()
-      .rule('compile')
-        .include
-          .add('alpha')
-          .add('beta')
-          .end()
-        .exclude
-          .add('alpha')
-          .add('beta')
-          .end()
-        .post()
-        .pre()
-        .test(/\.js$/)
-        .use('babel')
-          .loader('babel-loader')
-          .options({ presets: ['alpha'] });
+    .use(StringifyPlugin)
+    .end()
+    .module.defaultRule('inline')
+    .use('banner')
+    .loader('banner-loader')
+    .options({ prefix: 'banner-prefix.txt' })
+    .end()
+    .end()
+    .rule('compile')
+    .include.add('alpha')
+    .add('beta')
+    .end()
+    .exclude.add('alpha')
+    .add('beta')
+    .end()
+    .post()
+    .pre()
+    .test(/\.js$/)
+    .use('babel')
+    .loader('babel-loader')
+    .options({ presets: ['alpha'] });
 
   t.deepEqual(config.toConfig(), {
     mode: 'development',
     node: {
-      __dirname: 'mock'
+      __dirname: 'mock',
     },
     optimization: {
       nodeEnv: 'PRODUCTION',
     },
     output: {
-      path: 'build'
+      path: 'build',
     },
     target: 'node',
     plugins: [new StringifyPlugin()],
     module: {
-      defaultRules: [{
-        use: [{
-          loader: 'banner-loader',
-          options: { prefix: 'banner-prefix.txt' },
-        }]
-      }],
-      rules: [{
-        include: ['alpha', 'beta'],
-        exclude: ['alpha', 'beta'],
-        enforce: 'pre',
-        test: /\.js$/,
-        use: [{
-          loader: 'babel-loader',
-          options: { presets: ['alpha'] }
-        }]
-      }]
-    }
+      defaultRules: [
+        {
+          use: [
+            {
+              loader: 'banner-loader',
+              options: { prefix: 'banner-prefix.txt' },
+            },
+          ],
+        },
+      ],
+      rules: [
+        {
+          include: ['alpha', 'beta'],
+          exclude: ['alpha', 'beta'],
+          enforce: 'pre',
+          test: /\.js$/,
+          use: [
+            {
+              loader: 'babel-loader',
+              options: { presets: ['alpha'] },
+            },
+          ],
+        },
+      ],
+    },
   });
 });
 
@@ -176,40 +185,34 @@ test('validate with values', t => {
 
   config
     .entry('index')
-      .add('babel-polyfill')
-      .add('src/index.js')
-      .end()
-    .output
-      .path('/build')
-      .end()
+    .add('babel-polyfill')
+    .add('src/index.js')
+    .end()
+    .output.path('/build')
+    .end()
     .mode('development')
-    .optimization
-      .nodeEnv('PRODUCTION')
-      .end()
-    .node
-      .set('__dirname', 'mock')
-      .end()
+    .optimization.nodeEnv('PRODUCTION')
+    .end()
+    .node.set('__dirname', 'mock')
+    .end()
     .target('node')
     .plugin('stringify')
-      .use(StringifyPlugin)
-      .end()
-    .module
-      .rule('compile')
-        .include
-          .add('alpha')
-          .add('beta')
-          .end()
-        .exclude
-          .add('alpha')
-          .add('beta')
-          .end()
-        .sideEffects(false)
-        .post()
-        .pre()
-        .test(/\.js$/)
-        .use('babel')
-          .loader('babel-loader')
-          .options({ presets: ['alpha'] });
+    .use(StringifyPlugin)
+    .end()
+    .module.rule('compile')
+    .include.add('alpha')
+    .add('beta')
+    .end()
+    .exclude.add('alpha')
+    .add('beta')
+    .end()
+    .sideEffects(false)
+    .post()
+    .pre()
+    .test(/\.js$/)
+    .use('babel')
+    .loader('babel-loader')
+    .options({ presets: ['alpha'] });
 
   const errors = validate(config.toConfig());
 
@@ -219,29 +222,28 @@ test('validate with values', t => {
 test('toString', t => {
   const config = new Config();
 
-  config
-    .module
-      .rule('alpha')
-        .oneOf('beta')
-          .use('babel')
-            .loader('babel-loader');
+  config.module
+    .rule('alpha')
+    .oneOf('beta')
+    .use('babel')
+    .loader('babel-loader');
 
   class FooPlugin {}
   FooPlugin.__expression = `require('foo-plugin')`;
 
   config
     .plugin('gamma')
-      .use(FooPlugin)
-      .end()
+    .use(FooPlugin)
+    .end()
     .plugin('delta')
-      .use(class BarPlugin {}, ['bar'])
-      .end()
+    .use(class BarPlugin {}, ['bar'])
+    .end()
     .plugin('epsilon')
-      .use(class BazPlugin {}, [{ n: 1 }, [2, 3]])
+    .use(class BazPlugin {}, [{ n: 1 }, [2, 3]]);
 
-  const string = config.toString();
-
-  t.is(config.toString().trim(), `
+  t.is(
+    config.toString().trim(),
+    `
 {
   module: {
     rules: [
@@ -280,22 +282,21 @@ test('toString', t => {
     )
   ]
 }
-  `.trim())
+  `.trim()
+  );
 });
 
 test('toString for functions with custom expression', t => {
-  const fn = function foo () {};
+  const fn = function foo() {};
   fn.__expression = `require('foo')`;
 
   const config = new Config();
 
-  config
-    .module
-      .rule('alpha')
-        .include
-          .add(fn);
+  config.module.rule('alpha').include.add(fn);
 
-  t.is(config.toString().trim(), `
+  t.is(
+    config.toString().trim(),
+    `
 {
   module: {
     rules: [
@@ -308,22 +309,24 @@ test('toString for functions with custom expression', t => {
     ]
   }
 }
-  `.trim());
+  `.trim()
+  );
 });
 
 test('toString with custom prefix', t => {
   const config = new Config();
 
-  config
-    .plugin('foo')
-    .use(class TestPlugin {});
+  config.plugin('foo').use(class TestPlugin {});
 
-  t.is(config.toString({ configPrefix: 'neutrino.config' }).trim(), `
+  t.is(
+    config.toString({ configPrefix: 'neutrino.config' }).trim(),
+    `
 {
   plugins: [
     /* neutrino.config.plugin('foo') */
     new TestPlugin()
   ]
 }
-  `.trim());
+  `.trim()
+  );
 });
diff --git a/test/DevServer.js b/test/DevServer.js
index 1e46727..0bad0ed 100644
--- a/test/DevServer.js
+++ b/test/DevServer.js
@@ -20,11 +20,10 @@ test('shorthand methods', t => {
   const devServer = new DevServer();
   const obj = {};
 
-  devServer.shorthands.map(method => {
+  devServer.shorthands.forEach(method => {
     obj[method] = 'alpha';
     t.is(devServer[method]('alpha'), devServer);
   });
 
   t.deepEqual(devServer.entries(), obj);
 });
-
diff --git a/test/Module.js b/test/Module.js
index fb65530..0c05d8c 100644
--- a/test/Module.js
+++ b/test/Module.js
@@ -30,7 +30,7 @@ test('defaultRule', t => {
 
   t.is(instance, module);
   t.true(module.defaultRules.has('banner'));
-})
+});
 
 test('toConfig empty', t => {
   const module = new Module();
@@ -44,5 +44,8 @@ test('toConfig with values', t => {
   module.rule('compile').test(/\.js$/);
   module.noParse(/.min.js/);
 
-  t.deepEqual(module.toConfig(), { rules: [{ test: /\.js$/ }], noParse: /.min.js/ });
+  t.deepEqual(module.toConfig(), {
+    rules: [{ test: /\.js$/ }],
+    noParse: /.min.js/,
+  });
 });
diff --git a/test/Optimization.js b/test/Optimization.js
index 48d1957..ce22517 100644
--- a/test/Optimization.js
+++ b/test/Optimization.js
@@ -12,7 +12,7 @@ test('shorthand methods', t => {
   const optimization = new Optimization();
   const obj = {};
 
-  optimization.shorthands.map(method => {
+  optimization.shorthands.forEach(method => {
     obj[method] = 'alpha';
     t.is(optimization[method]('alpha'), optimization);
   });
diff --git a/test/Orderable.js b/test/Orderable.js
index 475e78e..77ea654 100644
--- a/test/Orderable.js
+++ b/test/Orderable.js
@@ -6,9 +6,7 @@ const Ordered = Orderable(class Test extends ChainedMap {});
 
 test('before', t => {
   const ordered = new Ordered();
-  const instance = ordered
-    .set('gamma')
-    .before('beta');
+  const instance = ordered.set('gamma').before('beta');
 
   t.is(instance, ordered);
   t.is(ordered.__before, 'beta');
@@ -16,9 +14,7 @@ test('before', t => {
 
 test('after', t => {
   const ordered = new Ordered();
-  const instance = ordered
-    .set('gamma')
-    .after('alpha');
+  const instance = ordered.set('gamma').after('alpha');
 
   t.is(instance, ordered);
   t.is(ordered.__after, 'alpha');
@@ -61,16 +57,18 @@ test('ordering before and after', t => {
   map.set('gamma', new Ordered().set('gamma', 'gamma').after('beta'));
   map.set('alpha', new Ordered().set('alpha', 'alpha').before('beta'));
 
-  t.deepEqual(map.values().map(o => o.values()), [['alpha'], ['beta'], ['gamma']]);
+  t.deepEqual(map.values().map(o => o.values()), [
+    ['alpha'],
+    ['beta'],
+    ['gamma'],
+  ]);
 });
 
 test('merge with before', t => {
   const ordered = new Ordered();
-  const instance = ordered
-    .set('gamma')
-    .merge({
-      before: 'beta'
-    });
+  const instance = ordered.set('gamma').merge({
+    before: 'beta',
+  });
 
   t.is(instance, ordered);
   t.is(ordered.__before, 'beta');
@@ -78,11 +76,9 @@ test('merge with before', t => {
 
 test('merge with after', t => {
   const ordered = new Ordered();
-  const instance = ordered
-    .set('gamma')
-    .merge({
-      after: 'alpha'
-    });
+  const instance = ordered.set('gamma').merge({
+    after: 'alpha',
+  });
 
   t.is(instance, ordered);
   t.is(ordered.__after, 'alpha');
diff --git a/test/Output.js b/test/Output.js
index b1a2c31..9ab23fb 100644
--- a/test/Output.js
+++ b/test/Output.js
@@ -12,7 +12,7 @@ test('shorthand methods', t => {
   const output = new Output();
   const obj = {};
 
-  output.shorthands.map(method => {
+  output.shorthands.forEach(method => {
     obj[method] = 'alpha';
     t.is(output[method]('alpha'), output);
   });
diff --git a/test/Performance.js b/test/Performance.js
index 41107a5..01b3013 100644
--- a/test/Performance.js
+++ b/test/Performance.js
@@ -12,7 +12,7 @@ test('shorthand methods', t => {
   const performance = new Performance();
   const obj = {};
 
-  performance.shorthands.map(method => {
+  performance.shorthands.forEach(method => {
     obj[method] = 'alpha';
     t.is(performance[method]('alpha'), performance);
   });
diff --git a/test/Plugin.js b/test/Plugin.js
index 5de84eb..b19275c 100644
--- a/test/Plugin.js
+++ b/test/Plugin.js
@@ -32,7 +32,7 @@ test('tap', t => {
 
   plugin.use(StringifyPlugin, ['alpha', 'beta']);
 
-  const instance = plugin.tap(args => ['gamma', 'delta']);
+  const instance = plugin.tap(() => ['gamma', 'delta']);
 
   t.is(instance, plugin);
   t.deepEqual(plugin.get('args'), ['gamma', 'delta']);
@@ -47,7 +47,10 @@ test('init', t => {
     t.deepEqual(args, []);
     return new Plugin('gamma', 'delta');
   });
-  const initialized = plugin.get('init')(plugin.get('plugin'), plugin.get('args'));
+  const initialized = plugin.get('init')(
+    plugin.get('plugin'),
+    plugin.get('args')
+  );
 
   t.is(instance, plugin);
   t.true(initialized instanceof StringifyPlugin);
diff --git a/test/Resolve.js b/test/Resolve.js
index 2c43cc1..bdd9c02 100644
--- a/test/Resolve.js
+++ b/test/Resolve.js
@@ -12,7 +12,7 @@ test('shorthand methods', t => {
   const resolve = new Resolve();
   const obj = {};
 
-  resolve.shorthands.map(method => {
+  resolve.shorthands.forEach(method => {
     obj[method] = 'alpha';
     t.is(resolve[method]('alpha'), resolve);
   });
@@ -22,9 +22,11 @@ test('shorthand methods', t => {
 
 test('sets methods', t => {
   const resolve = new Resolve();
-  const instance = resolve
-    .modules.add('src').end()
-    .extensions.add('.js').end();
+  const instance = resolve.modules
+    .add('src')
+    .end()
+    .extensions.add('.js')
+    .end();
 
   t.is(instance, resolve);
 });
@@ -38,15 +40,17 @@ test('toConfig empty', t => {
 test('toConfig with values', t => {
   const resolve = new Resolve();
 
-  resolve
-    .modules.add('src').end()
-    .extensions.add('.js').end()
+  resolve.modules
+    .add('src')
+    .end()
+    .extensions.add('.js')
+    .end()
     .alias.set('React', 'src/react');
 
   t.deepEqual(resolve.toConfig(), {
     modules: ['src'],
     extensions: ['.js'],
-    alias: { React: 'src/react' }
+    alias: { React: 'src/react' },
   });
 });
 
@@ -55,7 +59,7 @@ test('merge empty', t => {
   const obj = {
     modules: ['src'],
     extensions: ['.js'],
-    alias: { React: 'src/react' }
+    alias: { React: 'src/react' },
   };
   const instance = resolve.merge(obj);
 
@@ -66,50 +70,56 @@ test('merge empty', t => {
 test('merge with values', t => {
   const resolve = new Resolve();
 
-  resolve
-    .modules.add('src').end()
-    .extensions.add('.js').end()
+  resolve.modules
+    .add('src')
+    .end()
+    .extensions.add('.js')
+    .end()
     .alias.set('React', 'src/react');
 
   resolve.merge({
     modules: ['dist'],
     extensions: ['.jsx'],
-    alias: { ReactDOM: 'src/react-dom' }
+    alias: { ReactDOM: 'src/react-dom' },
   });
 
   t.deepEqual(resolve.toConfig(), {
     modules: ['src', 'dist'],
     extensions: ['.js', '.jsx'],
-    alias: { React: 'src/react', ReactDOM: 'src/react-dom' }
+    alias: { React: 'src/react', ReactDOM: 'src/react-dom' },
   });
 });
 
 test('merge with omit', t => {
   const resolve = new Resolve();
 
-  resolve
-    .modules.add('src').end()
-    .extensions.add('.js').end()
+  resolve.modules
+    .add('src')
+    .end()
+    .extensions.add('.js')
+    .end()
     .alias.set('React', 'src/react');
 
-  resolve.merge({
-    modules: ['dist'],
-    extensions: ['.jsx'],
-    alias: { ReactDOM: 'src/react-dom' }
-  }, ['alias']);
+  resolve.merge(
+    {
+      modules: ['dist'],
+      extensions: ['.jsx'],
+      alias: { ReactDOM: 'src/react-dom' },
+    },
+    ['alias']
+  );
 
   t.deepEqual(resolve.toConfig(), {
     modules: ['src', 'dist'],
     extensions: ['.js', '.jsx'],
-    alias: { React: 'src/react' }
+    alias: { React: 'src/react' },
   });
 });
 
 test('plugin with name', t => {
   const resolve = new Resolve();
 
-  resolve
-    .plugin('alpha');
+  resolve.plugin('alpha');
 
   t.is(resolve.plugins.get('alpha').name, 'alpha');
 });
diff --git a/test/ResolveLoader.js b/test/ResolveLoader.js
index c75f134..ddaacb5 100644
--- a/test/ResolveLoader.js
+++ b/test/ResolveLoader.js
@@ -25,13 +25,14 @@ test('toConfig empty', t => {
 test('toConfig with values', t => {
   const resolveLoader = new ResolveLoader();
 
-  resolveLoader
-    .modules.add('src').end()
+  resolveLoader.modules
+    .add('src')
+    .end()
     .set('moduleExtensions', ['-loader']);
 
   t.deepEqual(resolveLoader.toConfig(), {
     modules: ['src'],
-    moduleExtensions: ['-loader']
+    moduleExtensions: ['-loader'],
   });
 });
 
@@ -39,7 +40,7 @@ test('merge empty', t => {
   const resolveLoader = new ResolveLoader();
   const obj = {
     modules: ['src'],
-    moduleExtensions: ['-loader']
+    moduleExtensions: ['-loader'],
   };
   const instance = resolveLoader.merge(obj);
 
@@ -50,35 +51,40 @@ test('merge empty', t => {
 test('merge with values', t => {
   const resolveLoader = new ResolveLoader();
 
-  resolveLoader
-    .modules.add('src').end()
+  resolveLoader.modules
+    .add('src')
+    .end()
     .moduleExtensions.add('-loader');
 
   resolveLoader.merge({
     modules: ['dist'],
-    moduleExtensions: ['-fake']
+    moduleExtensions: ['-fake'],
   });
 
   t.deepEqual(resolveLoader.toConfig(), {
     modules: ['src', 'dist'],
-    moduleExtensions: ['-loader', '-fake']
+    moduleExtensions: ['-loader', '-fake'],
   });
 });
 
 test('merge with omit', t => {
   const resolveLoader = new ResolveLoader();
 
-  resolveLoader
-    .modules.add('src').end()
+  resolveLoader.modules
+    .add('src')
+    .end()
     .moduleExtensions.add('-loader');
 
-  resolveLoader.merge({
-    modules: ['dist'],
-    moduleExtensions: ['-fake']
-  }, ['moduleExtensions']);
+  resolveLoader.merge(
+    {
+      modules: ['dist'],
+      moduleExtensions: ['-fake'],
+    },
+    ['moduleExtensions']
+  );
 
   t.deepEqual(resolveLoader.toConfig(), {
     modules: ['src', 'dist'],
-    moduleExtensions: ['-loader']
+    moduleExtensions: ['-loader'],
   });
 });
diff --git a/test/Rule.js b/test/Rule.js
index d589bed..82c8ea8 100644
--- a/test/Rule.js
+++ b/test/Rule.js
@@ -12,7 +12,7 @@ test('shorthand methods', t => {
   const rule = new Rule();
   const obj = {};
 
-  rule.shorthands.map(method => {
+  rule.shorthands.forEach(method => {
     obj[method] = 'alpha';
     t.is(rule[method]('alpha'), rule);
   });
@@ -54,9 +54,13 @@ test('post', t => {
 
 test('sets methods', t => {
   const rule = new Rule();
-  const instance = rule
-    .include.add('alpha').add('beta').end()
-    .exclude.add('alpha').add('beta').end();
+  const instance = rule.include
+    .add('alpha')
+    .add('beta')
+    .end()
+    .exclude.add('alpha')
+    .add('beta')
+    .end();
 
   t.is(instance, rule);
   t.deepEqual(rule.include.values(), ['alpha', 'beta']);
@@ -72,7 +76,7 @@ test('toConfig empty', t => {
 test('toConfig with name', t => {
   const parent = new Rule(null, 'alpha');
   const child = parent.oneOf('beta');
-  const grandChild = child.oneOf('gamma')
+  const grandChild = child.oneOf('gamma');
 
   t.deepEqual(parent.toConfig().__ruleNames, ['alpha']);
   t.deepEqual(child.toConfig().__ruleNames, ['alpha', 'beta']);
@@ -82,44 +86,48 @@ test('toConfig with name', t => {
 test('toConfig with values', t => {
   const rule = new Rule();
 
-  rule
-    .include
-      .add('alpha')
-      .add('beta')
-      .end()
-    .exclude
-      .add('alpha')
-      .add('beta')
-      .end()
+  rule.include
+    .add('alpha')
+    .add('beta')
+    .end()
+    .exclude.add('alpha')
+    .add('beta')
+    .end()
     .post()
     .pre()
     .test(/\.js$/)
     .use('babel')
-      .loader('babel-loader')
-      .options({ presets: ['alpha'] })
-      .end()
+    .loader('babel-loader')
+    .options({ presets: ['alpha'] })
+    .end()
     .oneOf('inline')
-      .resourceQuery(/inline/)
-      .use('url')
-        .loader('url-loader');
+    .resourceQuery(/inline/)
+    .use('url')
+    .loader('url-loader');
 
   t.deepEqual(rule.toConfig(), {
     test: /\.js$/,
     enforce: 'pre',
     include: ['alpha', 'beta'],
     exclude: ['alpha', 'beta'],
-    oneOf: [{
-      resourceQuery: /inline/,
-      use: [{
-        loader: 'url-loader'
-      }]
-    }],
-    use: [{
-      loader: 'babel-loader',
-      options: {
-        presets: ['alpha']
-      }
-    }]
+    oneOf: [
+      {
+        resourceQuery: /inline/,
+        use: [
+          {
+            loader: 'url-loader',
+          },
+        ],
+      },
+    ],
+    use: [
+      {
+        loader: 'babel-loader',
+        options: {
+          presets: ['alpha'],
+        },
+      },
+    ],
   });
 });
 
@@ -135,19 +143,19 @@ test('merge empty', t => {
         resourceQuery: /inline/,
         use: {
           url: {
-            loader: 'url-loader'
-          }
-        }
-      }
+            loader: 'url-loader',
+          },
+        },
+      },
     },
     use: {
       babel: {
         loader: 'babel-loader',
         options: {
-          presets: ['alpha']
-        }
-      }
-    }
+          presets: ['alpha'],
+        },
+      },
+    },
   };
   const instance = rule.merge(obj);
 
@@ -157,18 +165,24 @@ test('merge empty', t => {
     test: /\.js$/,
     include: ['alpha', 'beta'],
     exclude: ['alpha', 'beta'],
-    oneOf: [{
-      resourceQuery: /inline/,
-      use: [{
-        loader: 'url-loader'
-      }]
-    }],
-    use: [{
-      loader: 'babel-loader',
-      options: {
-        presets: ['alpha']
-      }
-    }]
+    oneOf: [
+      {
+        resourceQuery: /inline/,
+        use: [
+          {
+            loader: 'url-loader',
+          },
+        ],
+      },
+    ],
+    use: [
+      {
+        loader: 'babel-loader',
+        options: {
+          presets: ['alpha'],
+        },
+      },
+    ],
   });
 });
 
@@ -178,10 +192,12 @@ test('merge with values', t => {
   rule
     .test(/\.js$/)
     .post()
-    .include.add('gamma').add('delta').end()
+    .include.add('gamma')
+    .add('delta')
+    .end()
     .use('babel')
-      .loader('babel-loader')
-      .options({ presets: ['alpha'] });
+    .loader('babel-loader')
+    .options({ presets: ['alpha'] });
 
   rule.merge({
     test: /\.jsx$/,
@@ -193,18 +209,18 @@ test('merge with values', t => {
         resourceQuery: /inline/,
         use: {
           url: {
-            loader: 'url-loader'
-          }
-        }
-      }
+            loader: 'url-loader',
+          },
+        },
+      },
     },
     use: {
       babel: {
         options: {
-          presets: ['beta']
-        }
-      }
-    }
+          presets: ['beta'],
+        },
+      },
+    },
   });
 
   t.deepEqual(rule.toConfig(), {
@@ -212,18 +228,24 @@ test('merge with values', t => {
     enforce: 'pre',
     include: ['gamma', 'delta', 'alpha', 'beta'],
     exclude: ['alpha', 'beta'],
-    oneOf: [{
-      resourceQuery: /inline/,
-      use: [{
-        loader: 'url-loader'
-      }]
-    }],
-    use: [{
-      loader: 'babel-loader',
-      options: {
-        presets: ['alpha', 'beta']
-      }
-    }]
+    oneOf: [
+      {
+        resourceQuery: /inline/,
+        use: [
+          {
+            loader: 'url-loader',
+          },
+        ],
+      },
+    ],
+    use: [
+      {
+        loader: 'babel-loader',
+        options: {
+          presets: ['alpha', 'beta'],
+        },
+      },
+    ],
   });
 });
 
@@ -233,45 +255,52 @@ test('merge with omit', t => {
   rule
     .test(/\.js$/)
     .post()
-    .include.add('gamma').add('delta').end()
+    .include.add('gamma')
+    .add('delta')
+    .end()
     .use('babel')
-      .loader('babel-loader')
-      .options({ presets: ['alpha'] });
-
-  rule.merge({
-    test: /\.jsx$/,
-    enforce: 'pre',
-    include: ['alpha', 'beta'],
-    exclude: ['alpha', 'beta'],
-    oneOf: {
-      inline: {
-        resourceQuery: /inline/,
-        use: {
-          url: {
-            loader: 'url-loader'
-          }
-        }
-      }
+    .loader('babel-loader')
+    .options({ presets: ['alpha'] });
+
+  rule.merge(
+    {
+      test: /\.jsx$/,
+      enforce: 'pre',
+      include: ['alpha', 'beta'],
+      exclude: ['alpha', 'beta'],
+      oneOf: {
+        inline: {
+          resourceQuery: /inline/,
+          use: {
+            url: {
+              loader: 'url-loader',
+            },
+          },
+        },
+      },
+      use: {
+        babel: {
+          options: {
+            presets: ['beta'],
+          },
+        },
+      },
     },
-    use: {
-      babel: {
-        options: {
-          presets: ['beta']
-        }
-      }
-    }
-  }, ['use', 'oneOf']);
+    ['use', 'oneOf']
+  );
 
   t.deepEqual(rule.toConfig(), {
     test: /\.jsx$/,
     enforce: 'pre',
     include: ['gamma', 'delta', 'alpha', 'beta'],
     exclude: ['alpha', 'beta'],
-    use: [{
-      loader: 'babel-loader',
-      options: {
-        presets: ['alpha']
-      }
-    }]
+    use: [
+      {
+        loader: 'babel-loader',
+        options: {
+          presets: ['alpha'],
+        },
+      },
+    ],
   });
 });
diff --git a/test/Use.js b/test/Use.js
index 004eea5..b5baa58 100644
--- a/test/Use.js
+++ b/test/Use.js
@@ -13,7 +13,7 @@ test('shorthand methods', t => {
   const use = new Use();
   const obj = {};
 
-  use.shorthands.map(method => {
+  use.shorthands.forEach(method => {
     obj[method] = 'alpha';
     t.is(use[method]('alpha'), use);
   });
@@ -24,9 +24,7 @@ test('shorthand methods', t => {
 test('tap', t => {
   const use = new Use();
 
-  use
-    .loader('babel-loader')
-    .options({ presets: ['alpha'] });
+  use.loader('babel-loader').options({ presets: ['alpha'] });
 
   use.tap(options => {
     t.deepEqual(options, { presets: ['alpha'] });
@@ -47,9 +45,9 @@ test('toConfig', t => {
 
   t.deepEqual(config, {
     loader: 'babel-loader',
-    options: { presets: ['alpha'] }
+    options: { presets: ['alpha'] },
   });
 
-  t.deepEqual(config.__ruleNames, ['alpha'])
-  t.is(config.__useName, 'beta')
+  t.deepEqual(config.__ruleNames, ['alpha']);
+  t.is(config.__useName, 'beta');
 });
diff --git a/yarn.lock b/yarn.lock
index b4838a0..ca4fb82 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -53,120 +53,116 @@
     pretty-ms "^0.2.1"
     text-table "^0.2.0"
 
-"@webassemblyjs/ast@1.4.3":
-  version "1.4.3"
-  resolved "https://registry.yarnpkg.com/@webassemblyjs/ast/-/ast-1.4.3.tgz#3b3f6fced944d8660273347533e6d4d315b5934a"
+"@webassemblyjs/ast@1.4.2":
+  version "1.4.2"
+  resolved "https://registry.yarnpkg.com/@webassemblyjs/ast/-/ast-1.4.2.tgz#ab715aa1fec9dd23c025204dba39690c119418ea"
   dependencies:
-    "@webassemblyjs/helper-wasm-bytecode" "1.4.3"
-    "@webassemblyjs/wast-parser" "1.4.3"
+    "@webassemblyjs/helper-wasm-bytecode" "1.4.2"
+    "@webassemblyjs/wast-parser" "1.4.2"
     debug "^3.1.0"
-    webassemblyjs "1.4.3"
+    webassemblyjs "1.4.2"
 
-"@webassemblyjs/floating-point-hex-parser@1.4.3":
-  version "1.4.3"
-  resolved "https://registry.yarnpkg.com/@webassemblyjs/floating-point-hex-parser/-/floating-point-hex-parser-1.4.3.tgz#f5aee4c376a717c74264d7bacada981e7e44faad"
+"@webassemblyjs/floating-point-hex-parser@1.4.2":
+  version "1.4.2"
+  resolved "https://registry.yarnpkg.com/@webassemblyjs/floating-point-hex-parser/-/floating-point-hex-parser-1.4.2.tgz#9296fb64caa37bf98c8064aa329680e3e2bfacc7"
 
-"@webassemblyjs/helper-buffer@1.4.3":
-  version "1.4.3"
-  resolved "https://registry.yarnpkg.com/@webassemblyjs/helper-buffer/-/helper-buffer-1.4.3.tgz#0434b55958519bf503697d3824857b1dea80b729"
-  dependencies:
-    debug "^3.1.0"
+"@webassemblyjs/helper-buffer@1.4.2":
+  version "1.4.2"
+  resolved "https://registry.yarnpkg.com/@webassemblyjs/helper-buffer/-/helper-buffer-1.4.2.tgz#3cacecd5a6bfcb67932ed8219f81f92d8b2dafbb"
 
-"@webassemblyjs/helper-code-frame@1.4.3":
-  version "1.4.3"
-  resolved "https://registry.yarnpkg.com/@webassemblyjs/helper-code-frame/-/helper-code-frame-1.4.3.tgz#f1349ca3e01a8e29ee2098c770773ef97af43641"
+"@webassemblyjs/helper-code-frame@1.4.2":
+  version "1.4.2"
+  resolved "https://registry.yarnpkg.com/@webassemblyjs/helper-code-frame/-/helper-code-frame-1.4.2.tgz#20526637c3849f12b08f8661248477eef9642329"
   dependencies:
-    "@webassemblyjs/wast-printer" "1.4.3"
+    "@webassemblyjs/wast-printer" "1.4.2"
 
-"@webassemblyjs/helper-fsm@1.4.3":
-  version "1.4.3"
-  resolved "https://registry.yarnpkg.com/@webassemblyjs/helper-fsm/-/helper-fsm-1.4.3.tgz#65a921db48fb43e868f17b27497870bdcae22b79"
+"@webassemblyjs/helper-fsm@1.4.2":
+  version "1.4.2"
+  resolved "https://registry.yarnpkg.com/@webassemblyjs/helper-fsm/-/helper-fsm-1.4.2.tgz#e41050282994b5be077b95b65b66ecd5a92c5e88"
 
-"@webassemblyjs/helper-wasm-bytecode@1.4.3":
-  version "1.4.3"
-  resolved "https://registry.yarnpkg.com/@webassemblyjs/helper-wasm-bytecode/-/helper-wasm-bytecode-1.4.3.tgz#0e5b4b5418e33f8a26e940b7809862828c3721a5"
+"@webassemblyjs/helper-wasm-bytecode@1.4.2":
+  version "1.4.2"
+  resolved "https://registry.yarnpkg.com/@webassemblyjs/helper-wasm-bytecode/-/helper-wasm-bytecode-1.4.2.tgz#b48c289c7921056aa12d71e78a17070ffe90c49c"
 
-"@webassemblyjs/helper-wasm-section@1.4.3":
-  version "1.4.3"
-  resolved "https://registry.yarnpkg.com/@webassemblyjs/helper-wasm-section/-/helper-wasm-section-1.4.3.tgz#9ceedd53a3f152c3412e072887ade668d0b1acbf"
+"@webassemblyjs/helper-wasm-section@1.4.2":
+  version "1.4.2"
+  resolved "https://registry.yarnpkg.com/@webassemblyjs/helper-wasm-section/-/helper-wasm-section-1.4.2.tgz#520e02c0cc3e5e9b5f44f58abc04ba5eda6e5476"
   dependencies:
-    "@webassemblyjs/ast" "1.4.3"
-    "@webassemblyjs/helper-buffer" "1.4.3"
-    "@webassemblyjs/helper-wasm-bytecode" "1.4.3"
-    "@webassemblyjs/wasm-gen" "1.4.3"
-    debug "^3.1.0"
+    "@webassemblyjs/ast" "1.4.2"
+    "@webassemblyjs/helper-buffer" "1.4.2"
+    "@webassemblyjs/helper-wasm-bytecode" "1.4.2"
+    "@webassemblyjs/wasm-gen" "1.4.2"
 
-"@webassemblyjs/leb128@1.4.3":
-  version "1.4.3"
-  resolved "https://registry.yarnpkg.com/@webassemblyjs/leb128/-/leb128-1.4.3.tgz#5a5e5949dbb5adfe3ae95664d0439927ac557fb8"
+"@webassemblyjs/leb128@1.4.2":
+  version "1.4.2"
+  resolved "https://registry.yarnpkg.com/@webassemblyjs/leb128/-/leb128-1.4.2.tgz#d13f368abdcefc54428f55a265a993de610f8893"
   dependencies:
     leb "^0.3.0"
 
-"@webassemblyjs/validation@1.4.3":
-  version "1.4.3"
-  resolved "https://registry.yarnpkg.com/@webassemblyjs/validation/-/validation-1.4.3.tgz#9e66c9b3079d7bbcf2070c1bf52a54af2a09aac9"
+"@webassemblyjs/validation@1.4.2":
+  version "1.4.2"
+  resolved "https://registry.yarnpkg.com/@webassemblyjs/validation/-/validation-1.4.2.tgz#55cf5b219e25900c85773fc35beb9d12ae0ede53"
   dependencies:
-    "@webassemblyjs/ast" "1.4.3"
+    "@webassemblyjs/ast" "1.4.2"
 
-"@webassemblyjs/wasm-edit@1.4.3":
-  version "1.4.3"
-  resolved "https://registry.yarnpkg.com/@webassemblyjs/wasm-edit/-/wasm-edit-1.4.3.tgz#87febd565e0ffb5ae25f6495bb3958d17aa0a779"
-  dependencies:
-    "@webassemblyjs/ast" "1.4.3"
-    "@webassemblyjs/helper-buffer" "1.4.3"
-    "@webassemblyjs/helper-wasm-bytecode" "1.4.3"
-    "@webassemblyjs/helper-wasm-section" "1.4.3"
-    "@webassemblyjs/wasm-gen" "1.4.3"
-    "@webassemblyjs/wasm-opt" "1.4.3"
-    "@webassemblyjs/wasm-parser" "1.4.3"
-    "@webassemblyjs/wast-printer" "1.4.3"
+"@webassemblyjs/wasm-edit@1.4.2":
+  version "1.4.2"
+  resolved "https://registry.yarnpkg.com/@webassemblyjs/wasm-edit/-/wasm-edit-1.4.2.tgz#bde9a581065f63f257ed511d7d9cf04f8cd04524"
+  dependencies:
+    "@webassemblyjs/ast" "1.4.2"
+    "@webassemblyjs/helper-buffer" "1.4.2"
+    "@webassemblyjs/helper-wasm-bytecode" "1.4.2"
+    "@webassemblyjs/helper-wasm-section" "1.4.2"
+    "@webassemblyjs/wasm-gen" "1.4.2"
+    "@webassemblyjs/wasm-opt" "1.4.2"
+    "@webassemblyjs/wasm-parser" "1.4.2"
+    "@webassemblyjs/wast-printer" "1.4.2"
     debug "^3.1.0"
 
-"@webassemblyjs/wasm-gen@1.4.3":
-  version "1.4.3"
-  resolved "https://registry.yarnpkg.com/@webassemblyjs/wasm-gen/-/wasm-gen-1.4.3.tgz#8553164d0154a6be8f74d653d7ab355f73240aa4"
+"@webassemblyjs/wasm-gen@1.4.2":
+  version "1.4.2"
+  resolved "https://registry.yarnpkg.com/@webassemblyjs/wasm-gen/-/wasm-gen-1.4.2.tgz#0899297f9426073736df799287845a73c597cf90"
   dependencies:
-    "@webassemblyjs/ast" "1.4.3"
-    "@webassemblyjs/helper-wasm-bytecode" "1.4.3"
-    "@webassemblyjs/leb128" "1.4.3"
+    "@webassemblyjs/ast" "1.4.2"
+    "@webassemblyjs/helper-wasm-bytecode" "1.4.2"
+    "@webassemblyjs/leb128" "1.4.2"
 
-"@webassemblyjs/wasm-opt@1.4.3":
-  version "1.4.3"
-  resolved "https://registry.yarnpkg.com/@webassemblyjs/wasm-opt/-/wasm-opt-1.4.3.tgz#26c7a23bfb136aa405b1d3410e63408ec60894b8"
+"@webassemblyjs/wasm-opt@1.4.2":
+  version "1.4.2"
+  resolved "https://registry.yarnpkg.com/@webassemblyjs/wasm-opt/-/wasm-opt-1.4.2.tgz#c44ad48e109aec197e3bf69875c54537d76ba2e9"
   dependencies:
-    "@webassemblyjs/ast" "1.4.3"
-    "@webassemblyjs/helper-buffer" "1.4.3"
-    "@webassemblyjs/wasm-gen" "1.4.3"
-    "@webassemblyjs/wasm-parser" "1.4.3"
-    debug "^3.1.0"
+    "@webassemblyjs/ast" "1.4.2"
+    "@webassemblyjs/helper-buffer" "1.4.2"
+    "@webassemblyjs/wasm-gen" "1.4.2"
+    "@webassemblyjs/wasm-parser" "1.4.2"
 
-"@webassemblyjs/wasm-parser@1.4.3":
-  version "1.4.3"
-  resolved "https://registry.yarnpkg.com/@webassemblyjs/wasm-parser/-/wasm-parser-1.4.3.tgz#7ddd3e408f8542647ed612019cfb780830993698"
+"@webassemblyjs/wasm-parser@1.4.2":
+  version "1.4.2"
+  resolved "https://registry.yarnpkg.com/@webassemblyjs/wasm-parser/-/wasm-parser-1.4.2.tgz#3bf7e10cfe336db0ecdea0a5d7ed8a63b7a7754a"
   dependencies:
-    "@webassemblyjs/ast" "1.4.3"
-    "@webassemblyjs/helper-wasm-bytecode" "1.4.3"
-    "@webassemblyjs/leb128" "1.4.3"
-    "@webassemblyjs/wasm-parser" "1.4.3"
-    webassemblyjs "1.4.3"
+    "@webassemblyjs/ast" "1.4.2"
+    "@webassemblyjs/helper-wasm-bytecode" "1.4.2"
+    "@webassemblyjs/leb128" "1.4.2"
+    "@webassemblyjs/wasm-parser" "1.4.2"
+    webassemblyjs "1.4.2"
 
-"@webassemblyjs/wast-parser@1.4.3":
-  version "1.4.3"
-  resolved "https://registry.yarnpkg.com/@webassemblyjs/wast-parser/-/wast-parser-1.4.3.tgz#3250402e2c5ed53dbe2233c9de1fe1f9f0d51745"
+"@webassemblyjs/wast-parser@1.4.2":
+  version "1.4.2"
+  resolved "https://registry.yarnpkg.com/@webassemblyjs/wast-parser/-/wast-parser-1.4.2.tgz#6499c38cf8895a81394f7e40d4681a85aaa84498"
   dependencies:
-    "@webassemblyjs/ast" "1.4.3"
-    "@webassemblyjs/floating-point-hex-parser" "1.4.3"
-    "@webassemblyjs/helper-code-frame" "1.4.3"
-    "@webassemblyjs/helper-fsm" "1.4.3"
+    "@webassemblyjs/ast" "1.4.2"
+    "@webassemblyjs/floating-point-hex-parser" "1.4.2"
+    "@webassemblyjs/helper-code-frame" "1.4.2"
+    "@webassemblyjs/helper-fsm" "1.4.2"
     long "^3.2.0"
-    webassemblyjs "1.4.3"
+    webassemblyjs "1.4.2"
 
-"@webassemblyjs/wast-printer@1.4.3":
-  version "1.4.3"
-  resolved "https://registry.yarnpkg.com/@webassemblyjs/wast-printer/-/wast-printer-1.4.3.tgz#3d59aa8d0252d6814a3ef4e6d2a34c9ded3904e0"
+"@webassemblyjs/wast-printer@1.4.2":
+  version "1.4.2"
+  resolved "https://registry.yarnpkg.com/@webassemblyjs/wast-printer/-/wast-printer-1.4.2.tgz#ee70a828f0d9730b55b9a5c3ed694094ba68ba57"
   dependencies:
-    "@webassemblyjs/ast" "1.4.3"
-    "@webassemblyjs/wast-parser" "1.4.3"
+    "@webassemblyjs/ast" "1.4.2"
+    "@webassemblyjs/wast-parser" "1.4.2"
     long "^3.2.0"
 
 abbrev@1:
@@ -179,15 +175,29 @@ acorn-dynamic-import@^3.0.0:
   dependencies:
     acorn "^5.0.0"
 
-acorn@^5.0.0:
+acorn-jsx@^3.0.0:
+  version "3.0.1"
+  resolved "https://registry.yarnpkg.com/acorn-jsx/-/acorn-jsx-3.0.1.tgz#afdf9488fb1ecefc8348f6fb22f464e32a58b36b"
+  dependencies:
+    acorn "^3.0.4"
+
+acorn@^3.0.4:
+  version "3.3.0"
+  resolved "https://registry.yarnpkg.com/acorn/-/acorn-3.3.0.tgz#45e37fb39e8da3f25baee3ff5369e2bb5f22017a"
+
+acorn@^5.0.0, acorn@^5.5.0:
   version "5.5.3"
   resolved "https://registry.yarnpkg.com/acorn/-/acorn-5.5.3.tgz#f473dd47e0277a08e28e9bec5aeeb04751f0b8c9"
 
+ajv-keywords@^2.1.0:
+  version "2.1.1"
+  resolved "https://registry.yarnpkg.com/ajv-keywords/-/ajv-keywords-2.1.1.tgz#617997fc5f60576894c435f940d819e135b80762"
+
 ajv-keywords@^3.1.0:
   version "3.2.0"
   resolved "https://registry.yarnpkg.com/ajv-keywords/-/ajv-keywords-3.2.0.tgz#e86b819c602cf8821ad637413698f1dec021847a"
 
-ajv@^5.1.0:
+ajv@^5.1.0, ajv@^5.2.3, ajv@^5.3.0:
   version "5.5.2"
   resolved "https://registry.yarnpkg.com/ajv/-/ajv-5.5.2.tgz#73b5eeca3fab653e3d3f9422b341ad42205dc965"
   dependencies:
@@ -468,7 +478,7 @@ aws4@^1.6.0:
   version "1.7.0"
   resolved "https://registry.yarnpkg.com/aws4/-/aws4-1.7.0.tgz#d4d0e9b9dbfca77bf08eeb0a8a471550fe39e289"
 
-babel-code-frame@^6.26.0:
+babel-code-frame@^6.22.0, babel-code-frame@^6.26.0:
   version "6.26.0"
   resolved "https://registry.yarnpkg.com/babel-code-frame/-/babel-code-frame-6.26.0.tgz#63fd43f7dc1e3bb7ce35947db8fe369a3f58c74b"
   dependencies:
@@ -995,6 +1005,16 @@ call-signature@0.0.2:
   version "0.0.2"
   resolved "https://registry.yarnpkg.com/call-signature/-/call-signature-0.0.2.tgz#a84abc825a55ef4cb2b028bd74e205a65b9a4996"
 
+caller-path@^0.1.0:
+  version "0.1.0"
+  resolved "https://registry.yarnpkg.com/caller-path/-/caller-path-0.1.0.tgz#94085ef63581ecd3daa92444a8fe94e82577751f"
+  dependencies:
+    callsites "^0.2.0"
+
+callsites@^0.2.0:
+  version "0.2.0"
+  resolved "https://registry.yarnpkg.com/callsites/-/callsites-0.2.0.tgz#afab96262910a7f33c19a5775825c69f34e350ca"
+
 camelcase-keys@^2.0.0:
   version "2.1.0"
   resolved "https://registry.yarnpkg.com/camelcase-keys/-/camelcase-keys-2.1.0.tgz#308beeaffdf28119051efa1d932213c91b8f92e7"
@@ -1044,7 +1064,7 @@ chalk@^1.1.3:
     strip-ansi "^3.0.0"
     supports-color "^2.0.0"
 
-chalk@^2.0.1:
+chalk@^2.0.0, chalk@^2.0.1, chalk@^2.1.0:
   version "2.4.1"
   resolved "https://registry.yarnpkg.com/chalk/-/chalk-2.4.1.tgz#18c49ab16a037b6eb0152cc83e3471338215b66e"
   dependencies:
@@ -1067,6 +1087,10 @@ changelog@^1.4.0:
     semver "5.5.0"
     wordwrap "1.0.0"
 
+chardet@^0.4.0:
+  version "0.4.2"
+  resolved "https://registry.yarnpkg.com/chardet/-/chardet-0.4.2.tgz#b5473b33dc97c424e5d98dc87d55d4d8a29c8bf2"
+
 chokidar@^1.4.2:
   version "1.7.0"
   resolved "https://registry.yarnpkg.com/chokidar/-/chokidar-1.7.0.tgz#798e689778151c8076b4b360e5edd28cda2bb468"
@@ -1119,6 +1143,10 @@ cipher-base@^1.0.0, cipher-base@^1.0.1, cipher-base@^1.0.3:
     inherits "^2.0.1"
     safe-buffer "^5.0.1"
 
+circular-json@^0.3.1:
+  version "0.3.3"
+  resolved "https://registry.yarnpkg.com/circular-json/-/circular-json-0.3.3.tgz#815c99ea84f6809529d2f45791bdf82711352d66"
+
 class-utils@^0.3.5:
   version "0.3.6"
   resolved "https://registry.yarnpkg.com/class-utils/-/class-utils-0.3.6.tgz#f93369ae8b9a7ce02fd41faad0ca83033190c463"
@@ -1157,6 +1185,10 @@ cli-truncate@^1.0.0:
     slice-ansi "^1.0.0"
     string-width "^2.0.0"
 
+cli-width@^2.0.0:
+  version "2.2.0"
+  resolved "https://registry.yarnpkg.com/cli-width/-/cli-width-2.2.0.tgz#ff19ede8a9a5e579324147b0c11f0fbcbabed639"
+
 cli@1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/cli/-/cli-1.0.1.tgz#22817534f24bfa4950c34d532d48ecbc621b8c14"
@@ -1227,7 +1259,7 @@ concat-map@0.0.1:
   version "0.0.1"
   resolved "https://registry.yarnpkg.com/concat-map/-/concat-map-0.0.1.tgz#d8a96bd77fd68df7793a73036a3ba0d5405d477b"
 
-concat-stream@^1.5.0:
+concat-stream@^1.5.0, concat-stream@^1.6.0:
   version "1.6.2"
   resolved "https://registry.yarnpkg.com/concat-stream/-/concat-stream-1.6.2.tgz#904bdf194cd3122fc675c77fc4ac3d4ff0fd1a34"
   dependencies:
@@ -1277,6 +1309,10 @@ constants-browserify@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/constants-browserify/-/constants-browserify-1.0.0.tgz#c20b96d8c617748aaf1c16021760cd27fcb8cb75"
 
+contains-path@^0.1.0:
+  version "0.1.0"
+  resolved "https://registry.yarnpkg.com/contains-path/-/contains-path-0.1.0.tgz#fe8cf184ff6670b6baef01a9d4861a5cbec4120a"
+
 convert-source-map@^1.5.1:
   version "1.5.1"
   resolved "https://registry.yarnpkg.com/convert-source-map/-/convert-source-map-1.5.1.tgz#b8278097b9bc229365de5c62cf5fcaed8b5599e5"
@@ -1349,7 +1385,7 @@ create-hmac@^1.1.0, create-hmac@^1.1.2, create-hmac@^1.1.4:
     safe-buffer "^5.0.1"
     sha.js "^2.4.8"
 
-cross-spawn@^5.0.1:
+cross-spawn@^5.0.1, cross-spawn@^5.1.0:
   version "5.1.0"
   resolved "https://registry.yarnpkg.com/cross-spawn/-/cross-spawn-5.1.0.tgz#e8bd0efee58fcff6f8f94510a0a554bbfa235449"
   dependencies:
@@ -1441,6 +1477,16 @@ deep-extend@^0.5.1:
   version "0.5.1"
   resolved "https://registry.yarnpkg.com/deep-extend/-/deep-extend-0.5.1.tgz#b894a9dd90d3023fbf1c55a394fb858eb2066f1f"
 
+deep-is@~0.1.3:
+  version "0.1.3"
+  resolved "https://registry.yarnpkg.com/deep-is/-/deep-is-0.1.3.tgz#b369d6fb5dbc13eecf524f91b070feedc357cf34"
+
+deep-strict-equal@^0.2.0:
+  version "0.2.0"
+  resolved "https://registry.yarnpkg.com/deep-strict-equal/-/deep-strict-equal-0.2.0.tgz#4a078147a8ab57f6a0d4f5547243cd22f44eb4e4"
+  dependencies:
+    core-assert "^0.2.0"
+
 deepmerge@^1.5.2:
   version "1.5.2"
   resolved "https://registry.yarnpkg.com/deepmerge/-/deepmerge-1.5.2.tgz#10499d868844cdad4fee0842df8c7f6f0c95a753"
@@ -1464,6 +1510,18 @@ define-property@^2.0.2:
     is-descriptor "^1.0.2"
     isobject "^3.0.1"
 
+del@^2.0.2:
+  version "2.2.2"
+  resolved "https://registry.yarnpkg.com/del/-/del-2.2.2.tgz#c12c981d067846c84bcaf862cff930d907ffd1a8"
+  dependencies:
+    globby "^5.0.0"
+    is-path-cwd "^1.0.0"
+    is-path-in-cwd "^1.0.0"
+    object-assign "^4.0.1"
+    pify "^2.0.0"
+    pinkie-promise "^2.0.0"
+    rimraf "^2.2.8"
+
 delayed-stream@~1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/delayed-stream/-/delayed-stream-1.0.0.tgz#df3ae199acadfb7d440aaae0b29e2272b24ec619"
@@ -1501,6 +1559,19 @@ diffie-hellman@^5.0.0:
     miller-rabin "^4.0.0"
     randombytes "^2.0.0"
 
+doctrine@1.5.0:
+  version "1.5.0"
+  resolved "https://registry.yarnpkg.com/doctrine/-/doctrine-1.5.0.tgz#379dce730f6166f76cefa4e6707a159b02c5a6fa"
+  dependencies:
+    esutils "^2.0.2"
+    isarray "^1.0.0"
+
+doctrine@^2.1.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/doctrine/-/doctrine-2.1.0.tgz#5cd01fc101621b42c4cd7f5d1a66243716d3f39d"
+  dependencies:
+    esutils "^2.0.2"
+
 domain-browser@^1.1.1:
   version "1.2.0"
   resolved "https://registry.yarnpkg.com/domain-browser/-/domain-browser-1.2.0.tgz#3d31f50191a6749dd1375a7f522e823d42e54eda"
@@ -1559,6 +1630,12 @@ end-of-stream@^1.0.0, end-of-stream@^1.1.0:
   dependencies:
     once "^1.4.0"
 
+enhance-visitors@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/enhance-visitors/-/enhance-visitors-1.0.0.tgz#aa945d05da465672a1ebd38fee2ed3da8518e95a"
+  dependencies:
+    lodash "^4.13.1"
+
 enhanced-resolve@^4.0.0:
   version "4.0.0"
   resolved "https://registry.yarnpkg.com/enhanced-resolve/-/enhanced-resolve-4.0.0.tgz#e34a6eaa790f62fccd71d93959f56b2b432db10a"
@@ -1591,6 +1668,71 @@ escape-string-regexp@^1.0.2, escape-string-regexp@^1.0.4, escape-string-regexp@^
   version "1.0.5"
   resolved "https://registry.yarnpkg.com/escape-string-regexp/-/escape-string-regexp-1.0.5.tgz#1b61c0562190a8dff6ae3bb2cf0200ca130b86d4"
 
+eslint-config-airbnb-base@^12.1.0:
+  version "12.1.0"
+  resolved "https://registry.yarnpkg.com/eslint-config-airbnb-base/-/eslint-config-airbnb-base-12.1.0.tgz#386441e54a12ccd957b0a92564a4bafebd747944"
+  dependencies:
+    eslint-restricted-globals "^0.1.1"
+
+eslint-config-prettier@^2.9.0:
+  version "2.9.0"
+  resolved "https://registry.yarnpkg.com/eslint-config-prettier/-/eslint-config-prettier-2.9.0.tgz#5ecd65174d486c22dff389fe036febf502d468a3"
+  dependencies:
+    get-stdin "^5.0.1"
+
+eslint-import-resolver-node@^0.3.1:
+  version "0.3.2"
+  resolved "https://registry.yarnpkg.com/eslint-import-resolver-node/-/eslint-import-resolver-node-0.3.2.tgz#58f15fb839b8d0576ca980413476aab2472db66a"
+  dependencies:
+    debug "^2.6.9"
+    resolve "^1.5.0"
+
+eslint-module-utils@^2.2.0:
+  version "2.2.0"
+  resolved "https://registry.yarnpkg.com/eslint-module-utils/-/eslint-module-utils-2.2.0.tgz#b270362cd88b1a48ad308976ce7fa54e98411746"
+  dependencies:
+    debug "^2.6.8"
+    pkg-dir "^1.0.0"
+
+eslint-plugin-ava@^4.5.1:
+  version "4.5.1"
+  resolved "https://registry.yarnpkg.com/eslint-plugin-ava/-/eslint-plugin-ava-4.5.1.tgz#a51b89a306dfd5b2f91185e283837aeade6f9e5c"
+  dependencies:
+    arrify "^1.0.1"
+    deep-strict-equal "^0.2.0"
+    enhance-visitors "^1.0.0"
+    espree "^3.1.3"
+    espurify "^1.5.0"
+    import-modules "^1.1.0"
+    multimatch "^2.1.0"
+    pkg-up "^2.0.0"
+
+eslint-plugin-import@^2.11.0:
+  version "2.11.0"
+  resolved "https://registry.yarnpkg.com/eslint-plugin-import/-/eslint-plugin-import-2.11.0.tgz#15aeea37a67499d848e8e981806d4627b5503816"
+  dependencies:
+    contains-path "^0.1.0"
+    debug "^2.6.8"
+    doctrine "1.5.0"
+    eslint-import-resolver-node "^0.3.1"
+    eslint-module-utils "^2.2.0"
+    has "^1.0.1"
+    lodash "^4.17.4"
+    minimatch "^3.0.3"
+    read-pkg-up "^2.0.0"
+    resolve "^1.6.0"
+
+eslint-plugin-prettier@^2.6.0:
+  version "2.6.0"
+  resolved "https://registry.yarnpkg.com/eslint-plugin-prettier/-/eslint-plugin-prettier-2.6.0.tgz#33e4e228bdb06142d03c560ce04ec23f6c767dd7"
+  dependencies:
+    fast-diff "^1.1.1"
+    jest-docblock "^21.0.0"
+
+eslint-restricted-globals@^0.1.1:
+  version "0.1.1"
+  resolved "https://registry.yarnpkg.com/eslint-restricted-globals/-/eslint-restricted-globals-0.1.1.tgz#35f0d5cbc64c2e3ed62e93b4b1a7af05ba7ed4d7"
+
 eslint-scope@^3.7.1:
   version "3.7.1"
   resolved "https://registry.yarnpkg.com/eslint-scope/-/eslint-scope-3.7.1.tgz#3d63c3edfda02e06e01a452ad88caacc7cdcb6e8"
@@ -1598,6 +1740,53 @@ eslint-scope@^3.7.1:
     esrecurse "^4.1.0"
     estraverse "^4.1.1"
 
+eslint-visitor-keys@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/eslint-visitor-keys/-/eslint-visitor-keys-1.0.0.tgz#3f3180fb2e291017716acb4c9d6d5b5c34a6a81d"
+
+eslint@^4.19.1:
+  version "4.19.1"
+  resolved "https://registry.yarnpkg.com/eslint/-/eslint-4.19.1.tgz#32d1d653e1d90408854bfb296f076ec7e186a300"
+  dependencies:
+    ajv "^5.3.0"
+    babel-code-frame "^6.22.0"
+    chalk "^2.1.0"
+    concat-stream "^1.6.0"
+    cross-spawn "^5.1.0"
+    debug "^3.1.0"
+    doctrine "^2.1.0"
+    eslint-scope "^3.7.1"
+    eslint-visitor-keys "^1.0.0"
+    espree "^3.5.4"
+    esquery "^1.0.0"
+    esutils "^2.0.2"
+    file-entry-cache "^2.0.0"
+    functional-red-black-tree "^1.0.1"
+    glob "^7.1.2"
+    globals "^11.0.1"
+    ignore "^3.3.3"
+    imurmurhash "^0.1.4"
+    inquirer "^3.0.6"
+    is-resolvable "^1.0.0"
+    js-yaml "^3.9.1"
+    json-stable-stringify-without-jsonify "^1.0.1"
+    levn "^0.3.0"
+    lodash "^4.17.4"
+    minimatch "^3.0.2"
+    mkdirp "^0.5.1"
+    natural-compare "^1.4.0"
+    optionator "^0.8.2"
+    path-is-inside "^1.0.2"
+    pluralize "^7.0.0"
+    progress "^2.0.0"
+    regexpp "^1.0.1"
+    require-uncached "^1.0.3"
+    semver "^5.3.0"
+    strip-ansi "^4.0.0"
+    strip-json-comments "~2.0.1"
+    table "4.0.2"
+    text-table "~0.2.0"
+
 espower-location-detector@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/espower-location-detector/-/espower-location-detector-1.0.0.tgz#a17b7ecc59d30e179e2bef73fb4137704cb331b5"
@@ -1607,16 +1796,29 @@ espower-location-detector@^1.0.0:
     source-map "^0.5.0"
     xtend "^4.0.0"
 
+espree@^3.1.3, espree@^3.5.4:
+  version "3.5.4"
+  resolved "https://registry.yarnpkg.com/espree/-/espree-3.5.4.tgz#b0f447187c8a8bed944b815a660bddf5deb5d1a7"
+  dependencies:
+    acorn "^5.5.0"
+    acorn-jsx "^3.0.0"
+
 esprima@^4.0.0:
   version "4.0.0"
   resolved "https://registry.yarnpkg.com/esprima/-/esprima-4.0.0.tgz#4499eddcd1110e0b218bacf2fa7f7f59f55ca804"
 
-espurify@^1.6.0:
+espurify@^1.5.0, espurify@^1.6.0:
   version "1.8.0"
   resolved "https://registry.yarnpkg.com/espurify/-/espurify-1.8.0.tgz#270d8046e4e47e923d75bc8a87357c7112ca8485"
   dependencies:
     core-js "^2.0.0"
 
+esquery@^1.0.0:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/esquery/-/esquery-1.0.1.tgz#406c51658b1f5991a5f9b62b1dc25b00e3e5c708"
+  dependencies:
+    estraverse "^4.0.0"
+
 esrecurse@^4.1.0:
   version "4.2.1"
   resolved "https://registry.yarnpkg.com/esrecurse/-/esrecurse-4.2.1.tgz#007a3b9fdbc2b3bb87e4879ea19c92fdbd3942cf"
@@ -1699,6 +1901,14 @@ extend@~3.0.1:
   version "3.0.1"
   resolved "https://registry.yarnpkg.com/extend/-/extend-3.0.1.tgz#a755ea7bc1adfcc5a31ce7e762dbaadc5e636444"
 
+external-editor@^2.0.4:
+  version "2.2.0"
+  resolved "https://registry.yarnpkg.com/external-editor/-/external-editor-2.2.0.tgz#045511cfd8d133f3846673d1047c154e214ad3d5"
+  dependencies:
+    chardet "^0.4.0"
+    iconv-lite "^0.4.17"
+    tmp "^0.0.33"
+
 extglob@^0.3.1:
   version "0.3.2"
   resolved "https://registry.yarnpkg.com/extglob/-/extglob-0.3.2.tgz#2e18ff3d2f49ab2765cec9023f011daa8d8349a1"
@@ -1742,12 +1952,23 @@ fast-json-stable-stringify@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/fast-json-stable-stringify/-/fast-json-stable-stringify-2.0.0.tgz#d5142c0caee6b1189f87d3a76111064f86c8bbf2"
 
+fast-levenshtein@~2.0.4:
+  version "2.0.6"
+  resolved "https://registry.yarnpkg.com/fast-levenshtein/-/fast-levenshtein-2.0.6.tgz#3d8a5c66883a16a30ca8643e851f19baa7797917"
+
 figures@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/figures/-/figures-2.0.0.tgz#3ab1a2d2a62c8bfb431a0c94cb797a2fce27c962"
   dependencies:
     escape-string-regexp "^1.0.5"
 
+file-entry-cache@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/file-entry-cache/-/file-entry-cache-2.0.0.tgz#c392990c3e684783d838b8c84a45d8a048458361"
+  dependencies:
+    flat-cache "^1.2.1"
+    object-assign "^4.0.1"
+
 filename-regex@^2.0.0:
   version "2.0.1"
   resolved "https://registry.yarnpkg.com/filename-regex/-/filename-regex-2.0.1.tgz#c1c4b9bee3e09725ddb106b75c1e301fe2f18b26"
@@ -1792,6 +2013,15 @@ find-up@^2.0.0, find-up@^2.1.0:
   dependencies:
     locate-path "^2.0.0"
 
+flat-cache@^1.2.1:
+  version "1.3.0"
+  resolved "https://registry.yarnpkg.com/flat-cache/-/flat-cache-1.3.0.tgz#d3030b32b38154f4e3b7e9c709f490f7ef97c481"
+  dependencies:
+    circular-json "^0.3.1"
+    del "^2.0.2"
+    graceful-fs "^4.1.2"
+    write "^0.2.1"
+
 flush-write-stream@^1.0.0:
   version "1.0.3"
   resolved "https://registry.yarnpkg.com/flush-write-stream/-/flush-write-stream-1.0.3.tgz#c5d586ef38af6097650b49bc41b55fabb19f35bd"
@@ -1864,10 +2094,18 @@ fsevents@^1.0.0, fsevents@^1.1.2:
     nan "^2.9.2"
     node-pre-gyp "^0.9.0"
 
+function-bind@^1.0.2:
+  version "1.1.1"
+  resolved "https://registry.yarnpkg.com/function-bind/-/function-bind-1.1.1.tgz#a56899d3ea3c9bab874bb9773b7c5ede92f4895d"
+
 function-name-support@^0.2.0:
   version "0.2.0"
   resolved "https://registry.yarnpkg.com/function-name-support/-/function-name-support-0.2.0.tgz#55d3bfaa6eafd505a50f9bc81fdf57564a0bb071"
 
+functional-red-black-tree@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/functional-red-black-tree/-/functional-red-black-tree-1.0.1.tgz#1b0ab3bd553b2a0d6399d29c0e3ea0b252078327"
+
 gauge@~2.7.3:
   version "2.7.4"
   resolved "https://registry.yarnpkg.com/gauge/-/gauge-2.7.4.tgz#2c03405c7538c39d7eb37b317022e325fb018bf7"
@@ -1889,6 +2127,10 @@ get-stdin@^4.0.1:
   version "4.0.1"
   resolved "https://registry.yarnpkg.com/get-stdin/-/get-stdin-4.0.1.tgz#b968c6b0a04384324902e8bf1a5df32579a450fe"
 
+get-stdin@^5.0.1:
+  version "5.0.1"
+  resolved "https://registry.yarnpkg.com/get-stdin/-/get-stdin-5.0.1.tgz#122e161591e21ff4c52530305693f20e6393a398"
+
 get-stream@^3.0.0:
   version "3.0.0"
   resolved "https://registry.yarnpkg.com/get-stream/-/get-stream-3.0.0.tgz#8e943d1358dc37555054ecbe2edb05aa174ede14"
@@ -1944,10 +2186,25 @@ global-dirs@^0.1.0:
   dependencies:
     ini "^1.3.4"
 
+globals@^11.0.1:
+  version "11.5.0"
+  resolved "https://registry.yarnpkg.com/globals/-/globals-11.5.0.tgz#6bc840de6771173b191f13d3a9c94d441ee92642"
+
 globals@^9.18.0:
   version "9.18.0"
   resolved "https://registry.yarnpkg.com/globals/-/globals-9.18.0.tgz#aa3896b3e69b487f17e31ed2143d69a8e30c2d8a"
 
+globby@^5.0.0:
+  version "5.0.0"
+  resolved "https://registry.yarnpkg.com/globby/-/globby-5.0.0.tgz#ebd84667ca0dbb330b99bcfc68eac2bc54370e0d"
+  dependencies:
+    array-union "^1.0.1"
+    arrify "^1.0.0"
+    glob "^7.0.3"
+    object-assign "^4.0.1"
+    pify "^2.0.0"
+    pinkie-promise "^2.0.0"
+
 globby@^6.0.0:
   version "6.1.0"
   resolved "https://registry.yarnpkg.com/globby/-/globby-6.1.0.tgz#f5a6d70e8395e21c858fb0489d64df02424d506c"
@@ -2042,6 +2299,12 @@ has-yarn@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/has-yarn/-/has-yarn-1.0.0.tgz#89e25db604b725c8f5976fff0addc921b828a5a7"
 
+has@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/has/-/has-1.0.1.tgz#8461733f538b0837c9361e39a9ab9e9704dc2f28"
+  dependencies:
+    function-bind "^1.0.2"
+
 hash-base@^3.0.0:
   version "3.0.4"
   resolved "https://registry.yarnpkg.com/hash-base/-/hash-base-3.0.4.tgz#5fc8686847ecd73499403319a6b0a3f3f6ae4918"
@@ -2119,7 +2382,7 @@ hullabaloo-config-manager@^1.1.0:
     resolve-from "^3.0.0"
     safe-buffer "^5.0.1"
 
-iconv-lite@^0.4.4:
+iconv-lite@^0.4.17, iconv-lite@^0.4.4:
   version "0.4.23"
   resolved "https://registry.yarnpkg.com/iconv-lite/-/iconv-lite-0.4.23.tgz#297871f63be507adcfbfca715d0cd0eed84e9a63"
   dependencies:
@@ -2143,6 +2406,10 @@ ignore-walk@^3.0.1:
   dependencies:
     minimatch "^3.0.4"
 
+ignore@^3.3.3:
+  version "3.3.8"
+  resolved "https://registry.yarnpkg.com/ignore/-/ignore-3.3.8.tgz#3f8e9c35d38708a3a7e0e9abb6c73e7ee7707b2b"
+
 import-lazy@^2.1.0:
   version "2.1.0"
   resolved "https://registry.yarnpkg.com/import-lazy/-/import-lazy-2.1.0.tgz#05698e3d45c88e8d7e9d92cb0584e77f096f3e43"
@@ -2154,6 +2421,10 @@ import-local@^0.1.1:
     pkg-dir "^2.0.0"
     resolve-cwd "^2.0.0"
 
+import-modules@^1.1.0:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/import-modules/-/import-modules-1.1.0.tgz#748db79c5cc42bb9701efab424f894e72600e9dc"
+
 imurmurhash@^0.1.4:
   version "0.1.4"
   resolved "https://registry.yarnpkg.com/imurmurhash/-/imurmurhash-0.1.4.tgz#9218b9b2b928a238b13dc4fb6b6d576f231453ea"
@@ -2191,6 +2462,25 @@ ini@^1.3.4, ini@~1.3.0:
   version "1.3.5"
   resolved "https://registry.yarnpkg.com/ini/-/ini-1.3.5.tgz#eee25f56db1c9ec6085e0c22778083f596abf927"
 
+inquirer@^3.0.6:
+  version "3.3.0"
+  resolved "https://registry.yarnpkg.com/inquirer/-/inquirer-3.3.0.tgz#9dd2f2ad765dcab1ff0443b491442a20ba227dc9"
+  dependencies:
+    ansi-escapes "^3.0.0"
+    chalk "^2.0.0"
+    cli-cursor "^2.1.0"
+    cli-width "^2.0.0"
+    external-editor "^2.0.4"
+    figures "^2.0.0"
+    lodash "^4.3.0"
+    mute-stream "0.0.7"
+    run-async "^2.2.0"
+    rx-lite "^4.0.8"
+    rx-lite-aggregates "^4.0.8"
+    string-width "^2.1.0"
+    strip-ansi "^4.0.0"
+    through "^2.3.6"
+
 invariant@^2.2.2:
   version "2.2.4"
   resolved "https://registry.yarnpkg.com/invariant/-/invariant-2.2.4.tgz#610f3c92c9359ce1db616e538008d23ff35158e6"
@@ -2386,6 +2676,16 @@ is-odd@^2.0.0:
   dependencies:
     is-number "^4.0.0"
 
+is-path-cwd@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/is-path-cwd/-/is-path-cwd-1.0.0.tgz#d225ec23132e89edd38fda767472e62e65f1106d"
+
+is-path-in-cwd@^1.0.0:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/is-path-in-cwd/-/is-path-in-cwd-1.0.1.tgz#5ac48b345ef675339bd6c7a48a912110b241cf52"
+  dependencies:
+    is-path-inside "^1.0.0"
+
 is-path-inside@^1.0.0:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/is-path-inside/-/is-path-inside-1.0.1.tgz#8ef5b7de50437a3fdca6b4e865ef7aa55cb48036"
@@ -2418,6 +2718,10 @@ is-redirect@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/is-redirect/-/is-redirect-1.0.0.tgz#1d03dded53bd8db0f30c26e4f95d36fc7c87dc24"
 
+is-resolvable@^1.0.0:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/is-resolvable/-/is-resolvable-1.1.0.tgz#fb18f87ce1feb925169c9a407c19318a3206ed88"
+
 is-retry-allowed@^1.0.0:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/is-retry-allowed/-/is-retry-allowed-1.1.0.tgz#11a060568b67339444033d0125a61a20d564fb34"
@@ -2468,6 +2772,10 @@ javascript-stringify@^1.6.0:
   version "1.6.0"
   resolved "https://registry.yarnpkg.com/javascript-stringify/-/javascript-stringify-1.6.0.tgz#142d111f3a6e3dae8f4a9afd77d45855b5a9cce3"
 
+jest-docblock@^21.0.0:
+  version "21.2.0"
+  resolved "https://registry.yarnpkg.com/jest-docblock/-/jest-docblock-21.2.0.tgz#51529c3b30d5fd159da60c27ceedc195faf8d414"
+
 js-string-escape@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/js-string-escape/-/js-string-escape-1.0.1.tgz#e2625badbc0d67c7533e9edc1068c587ae4137ef"
@@ -2476,7 +2784,7 @@ js-tokens@^3.0.0, js-tokens@^3.0.2:
   version "3.0.2"
   resolved "https://registry.yarnpkg.com/js-tokens/-/js-tokens-3.0.2.tgz#9866df395102130e38f7f996bceb65443209c25b"
 
-js-yaml@^3.10.0:
+js-yaml@^3.10.0, js-yaml@^3.9.1:
   version "3.11.0"
   resolved "https://registry.yarnpkg.com/js-yaml/-/js-yaml-3.11.0.tgz#597c1a8bd57152f26d622ce4117851a51f5ebaef"
   dependencies:
@@ -2507,6 +2815,10 @@ json-schema@0.2.3:
   version "0.2.3"
   resolved "https://registry.yarnpkg.com/json-schema/-/json-schema-0.2.3.tgz#b480c892e59a2f05954ce727bd3f2a4e882f9e13"
 
+json-stable-stringify-without-jsonify@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/json-stable-stringify-without-jsonify/-/json-stable-stringify-without-jsonify-1.0.1.tgz#9db7b59496ad3f3cfef30a75142d2d930ad72651"
+
 json-stringify-safe@~5.0.1:
   version "5.0.1"
   resolved "https://registry.yarnpkg.com/json-stringify-safe/-/json-stringify-safe-5.0.1.tgz#1296a2d58fd45f19a0f6ce01d65701e2c735b6eb"
@@ -2560,6 +2872,13 @@ leb@^0.3.0:
   version "0.3.0"
   resolved "https://registry.yarnpkg.com/leb/-/leb-0.3.0.tgz#32bee9fad168328d6aea8522d833f4180eed1da3"
 
+levn@^0.3.0, levn@~0.3.0:
+  version "0.3.0"
+  resolved "https://registry.yarnpkg.com/levn/-/levn-0.3.0.tgz#3b09924edf9f083c0490fdd4c0bc4421e04764ee"
+  dependencies:
+    prelude-ls "~1.1.2"
+    type-check "~0.3.2"
+
 load-json-file@^1.0.0:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/load-json-file/-/load-json-file-1.1.0.tgz#956905708d58b4bab4c2261b04f59f31c99374c0"
@@ -2643,7 +2962,7 @@ lodash@4.17.5:
   version "4.17.5"
   resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.5.tgz#99a92d65c0272debe8c96b6057bc8fbfa3bed511"
 
-lodash@^4.17.4:
+lodash@^4.13.1, lodash@^4.17.4, lodash@^4.3.0:
   version "4.17.10"
   resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.10.tgz#1b7793cf7259ea38fb3661d4d38b3260af8ae4e7"
 
@@ -2815,7 +3134,7 @@ minimalistic-crypto-utils@^1.0.0, minimalistic-crypto-utils@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/minimalistic-crypto-utils/-/minimalistic-crypto-utils-1.0.1.tgz#f6c00c1c0b082246e5c4d99dfb8c7c083b2b582a"
 
-minimatch@^3.0.0, minimatch@^3.0.2, minimatch@^3.0.4:
+minimatch@^3.0.0, minimatch@^3.0.2, minimatch@^3.0.3, minimatch@^3.0.4:
   version "3.0.4"
   resolved "https://registry.yarnpkg.com/minimatch/-/minimatch-3.0.4.tgz#5166e286457f03306064be5497e8dbb0c3d32083"
   dependencies:
@@ -2902,6 +3221,10 @@ multimatch@^2.1.0:
     arrify "^1.0.0"
     minimatch "^3.0.0"
 
+mute-stream@0.0.7:
+  version "0.0.7"
+  resolved "https://registry.yarnpkg.com/mute-stream/-/mute-stream-0.0.7.tgz#3075ce93bc21b8fab43e1bc4da7e8115ed1e7bab"
+
 nan@^2.9.2:
   version "2.10.0"
   resolved "https://registry.yarnpkg.com/nan/-/nan-2.10.0.tgz#96d0cd610ebd58d4b4de9cc0c6828cda99c7548f"
@@ -2923,6 +3246,10 @@ nanomatch@^1.2.9:
     snapdragon "^0.8.1"
     to-regex "^3.0.1"
 
+natural-compare@^1.4.0:
+  version "1.4.0"
+  resolved "https://registry.yarnpkg.com/natural-compare/-/natural-compare-1.4.0.tgz#4abebfeed7541f2c27acfb29bdbbd15c8d5ba4f7"
+
 needle@^2.2.0:
   version "2.2.1"
   resolved "https://registry.yarnpkg.com/needle/-/needle-2.2.1.tgz#b5e325bd3aae8c2678902fa296f729455d1d3a7d"
@@ -3088,6 +3415,17 @@ option-chain@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/option-chain/-/option-chain-1.0.0.tgz#938d73bd4e1783f948d34023644ada23669e30f2"
 
+optionator@^0.8.2:
+  version "0.8.2"
+  resolved "https://registry.yarnpkg.com/optionator/-/optionator-0.8.2.tgz#364c5e409d3f4d6301d6c0b4c05bba50180aeb64"
+  dependencies:
+    deep-is "~0.1.3"
+    fast-levenshtein "~2.0.4"
+    levn "~0.3.0"
+    prelude-ls "~1.1.2"
+    type-check "~0.3.2"
+    wordwrap "~1.0.0"
+
 os-browserify@^0.3.0:
   version "0.3.0"
   resolved "https://registry.yarnpkg.com/os-browserify/-/os-browserify-0.3.0.tgz#854373c7f5c2315914fc9bfc6bd8238fdda1ec27"
@@ -3096,7 +3434,7 @@ os-homedir@^1.0.0:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/os-homedir/-/os-homedir-1.0.2.tgz#ffbc4988336e0e833de0c168c7ef152121aa7fb3"
 
-os-tmpdir@^1.0.0, os-tmpdir@^1.0.1:
+os-tmpdir@^1.0.0, os-tmpdir@^1.0.1, os-tmpdir@~1.0.2:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/os-tmpdir/-/os-tmpdir-1.0.2.tgz#bbe67406c79aa85c5cfec766fe5734555dfa1274"
 
@@ -3229,7 +3567,7 @@ path-is-absolute@^1.0.0, path-is-absolute@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/path-is-absolute/-/path-is-absolute-1.0.1.tgz#174b9268735534ffbc7ace6bf53a5a9e1b5c5f5f"
 
-path-is-inside@^1.0.1:
+path-is-inside@^1.0.1, path-is-inside@^1.0.2:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/path-is-inside/-/path-is-inside-1.0.2.tgz#365417dede44430d1c11af61027facf074bdfc53"
 
@@ -3237,6 +3575,10 @@ 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"
+
 path-type@^1.0.0:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/path-type/-/path-type-1.1.0.tgz#59c44f7ee491da704da415da5a4070ba4f8fe441"
@@ -3300,22 +3642,42 @@ pkg-conf@^2.0.0:
     find-up "^2.0.0"
     load-json-file "^4.0.0"
 
+pkg-dir@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/pkg-dir/-/pkg-dir-1.0.0.tgz#7a4b508a8d5bb2d629d447056ff4e9c9314cf3d4"
+  dependencies:
+    find-up "^1.0.0"
+
 pkg-dir@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/pkg-dir/-/pkg-dir-2.0.0.tgz#f6d5d1109e19d63edf428e0bd57e12777615334b"
   dependencies:
     find-up "^2.1.0"
 
+pkg-up@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/pkg-up/-/pkg-up-2.0.0.tgz#c819ac728059a461cab1c3889a2be3c49a004d7f"
+  dependencies:
+    find-up "^2.1.0"
+
 plur@^2.0.0, plur@^2.1.2:
   version "2.1.2"
   resolved "https://registry.yarnpkg.com/plur/-/plur-2.1.2.tgz#7482452c1a0f508e3e344eaec312c91c29dc655a"
   dependencies:
     irregular-plurals "^1.0.0"
 
+pluralize@^7.0.0:
+  version "7.0.0"
+  resolved "https://registry.yarnpkg.com/pluralize/-/pluralize-7.0.0.tgz#298b89df8b93b0221dbf421ad2b1b1ea23fc6777"
+
 posix-character-classes@^0.1.0:
   version "0.1.1"
   resolved "https://registry.yarnpkg.com/posix-character-classes/-/posix-character-classes-0.1.1.tgz#01eac0fe3b5af71a2a6c02feabb8c1fef7e00eab"
 
+prelude-ls@~1.1.2:
+  version "1.1.2"
+  resolved "https://registry.yarnpkg.com/prelude-ls/-/prelude-ls-1.1.2.tgz#21932a549f5e52ffd9a827f570e04be62a97da54"
+
 prepend-http@^1.0.1:
   version "1.0.4"
   resolved "https://registry.yarnpkg.com/prepend-http/-/prepend-http-1.0.4.tgz#d4f4562b0ce3696e41ac52d0e002e57a635dc6dc"
@@ -3324,6 +3686,10 @@ preserve@^0.2.0:
   version "0.2.0"
   resolved "https://registry.yarnpkg.com/preserve/-/preserve-0.2.0.tgz#815ed1f6ebc65926f865b310c0713bcb3315ce4b"
 
+prettier@^1.12.1:
+  version "1.12.1"
+  resolved "https://registry.yarnpkg.com/prettier/-/prettier-1.12.1.tgz#c1ad20e803e7749faf905a409d2367e06bbe7325"
+
 pretty-ms@^0.2.1:
   version "0.2.2"
   resolved "https://registry.yarnpkg.com/pretty-ms/-/pretty-ms-0.2.2.tgz#da879a682ff33a37011046f13d627f67c73b84f6"
@@ -3349,6 +3715,10 @@ process@^0.11.10:
   version "0.11.10"
   resolved "https://registry.yarnpkg.com/process/-/process-0.11.10.tgz#7332300e840161bda3e69a1d1d91a7d4bc16f182"
 
+progress@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/progress/-/progress-2.0.0.tgz#8a1be366bf8fc23db2bd23f10c6fe920b4389d1f"
+
 promise-inflight@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/promise-inflight/-/promise-inflight-1.0.1.tgz#98472870bf228132fcbdd868129bad12c3c029e3"
@@ -3523,6 +3893,10 @@ regex-not@^1.0.0, regex-not@^1.0.2:
     extend-shallow "^3.0.2"
     safe-regex "^1.1.0"
 
+regexpp@^1.0.1:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/regexpp/-/regexpp-1.1.0.tgz#0e3516dd0b7904f413d2d4193dce4618c3a689ab"
+
 regexpu-core@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/regexpu-core/-/regexpu-core-2.0.0.tgz#49d038837b8dcf8bfa5b9a42139938e6ea2ae240"
@@ -3609,12 +3983,23 @@ require-precompiled@^0.1.0:
   version "0.1.0"
   resolved "https://registry.yarnpkg.com/require-precompiled/-/require-precompiled-0.1.0.tgz#5a1b52eb70ebed43eb982e974c85ab59571e56fa"
 
+require-uncached@^1.0.3:
+  version "1.0.3"
+  resolved "https://registry.yarnpkg.com/require-uncached/-/require-uncached-1.0.3.tgz#4e0d56d6c9662fd31e43011c4b95aa49955421d3"
+  dependencies:
+    caller-path "^0.1.0"
+    resolve-from "^1.0.0"
+
 resolve-cwd@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/resolve-cwd/-/resolve-cwd-2.0.0.tgz#00a9f7387556e27038eae232caa372a6a59b665a"
   dependencies:
     resolve-from "^3.0.0"
 
+resolve-from@^1.0.0:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/resolve-from/-/resolve-from-1.0.1.tgz#26cbfe935d1aeeeabb29bc3fe5aeb01e93d44226"
+
 resolve-from@^3.0.0:
   version "3.0.0"
   resolved "https://registry.yarnpkg.com/resolve-from/-/resolve-from-3.0.0.tgz#b22c7af7d9d6881bc8b6e653335eebcb0a188748"
@@ -3623,6 +4008,12 @@ resolve-url@^0.2.1:
   version "0.2.1"
   resolved "https://registry.yarnpkg.com/resolve-url/-/resolve-url-0.2.1.tgz#2c637fe77c893afd2a663fe21aa9080068e2052a"
 
+resolve@^1.5.0, resolve@^1.6.0:
+  version "1.7.1"
+  resolved "https://registry.yarnpkg.com/resolve/-/resolve-1.7.1.tgz#aadd656374fd298aee895bc026b8297418677fd3"
+  dependencies:
+    path-parse "^1.0.5"
+
 restore-cursor@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/restore-cursor/-/restore-cursor-2.0.0.tgz#9f7ee287f82fd326d4fd162923d62129eee0dfaf"
@@ -3634,7 +4025,7 @@ ret@~0.1.10:
   version "0.1.15"
   resolved "https://registry.yarnpkg.com/ret/-/ret-0.1.15.tgz#b8a4825d5bdb1fc3f6f53c2bc33f81388681c7bc"
 
-rimraf@^2.5.4, rimraf@^2.6.1, rimraf@^2.6.2:
+rimraf@^2.2.8, rimraf@^2.5.4, rimraf@^2.6.1, rimraf@^2.6.2:
   version "2.6.2"
   resolved "https://registry.yarnpkg.com/rimraf/-/rimraf-2.6.2.tgz#2ed8150d24a16ea8651e6d6ef0f47c4158ce7a36"
   dependencies:
@@ -3647,12 +4038,28 @@ ripemd160@^2.0.0, ripemd160@^2.0.1:
     hash-base "^3.0.0"
     inherits "^2.0.1"
 
+run-async@^2.2.0:
+  version "2.3.0"
+  resolved "https://registry.yarnpkg.com/run-async/-/run-async-2.3.0.tgz#0371ab4ae0bdd720d4166d7dfda64ff7a445a6c0"
+  dependencies:
+    is-promise "^2.1.0"
+
 run-queue@^1.0.0, run-queue@^1.0.3:
   version "1.0.3"
   resolved "https://registry.yarnpkg.com/run-queue/-/run-queue-1.0.3.tgz#e848396f057d223f24386924618e25694161ec47"
   dependencies:
     aproba "^1.1.1"
 
+rx-lite-aggregates@^4.0.8:
+  version "4.0.8"
+  resolved "https://registry.yarnpkg.com/rx-lite-aggregates/-/rx-lite-aggregates-4.0.8.tgz#753b87a89a11c95467c4ac1626c4efc4e05c67be"
+  dependencies:
+    rx-lite "*"
+
+rx-lite@*, rx-lite@^4.0.8:
+  version "4.0.8"
+  resolved "https://registry.yarnpkg.com/rx-lite/-/rx-lite-4.0.8.tgz#0b1e11af8bc44836f04a6407e92da42467b79444"
+
 safe-buffer@^5.0.1, safe-buffer@^5.1.0, safe-buffer@^5.1.1, safe-buffer@^5.1.2, safe-buffer@~5.1.0, safe-buffer@~5.1.1:
   version "5.1.2"
   resolved "https://registry.yarnpkg.com/safe-buffer/-/safe-buffer-5.1.2.tgz#991ec69d296e0313747d59bdfd2b745c35f8828d"
@@ -3751,7 +4158,7 @@ slash@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/slash/-/slash-1.0.0.tgz#c41f2f6c39fc16d1cd17ad4b5d896114ae470d55"
 
-slice-ansi@^1.0.0:
+slice-ansi@1.0.0, slice-ansi@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/slice-ansi/-/slice-ansi-1.0.0.tgz#044f1a49d8842ff307aad6b505ed178bd950134d"
   dependencies:
@@ -3821,8 +4228,8 @@ source-map-support@^0.4.15:
     source-map "^0.5.6"
 
 source-map-support@^0.5.0:
-  version "0.5.6"
-  resolved "https://registry.yarnpkg.com/source-map-support/-/source-map-support-0.5.6.tgz#4435cee46b1aab62b8e8610ce60f788091c51c13"
+  version "0.5.5"
+  resolved "https://registry.yarnpkg.com/source-map-support/-/source-map-support-0.5.5.tgz#0d4af9e00493e855402e8ec36ebed2d266fceb90"
   dependencies:
     buffer-from "^1.0.0"
     source-map "^0.6.0"
@@ -3938,7 +4345,7 @@ string-width@^1.0.1, string-width@^1.0.2:
     is-fullwidth-code-point "^1.0.0"
     strip-ansi "^3.0.0"
 
-string-width@^2.0.0, string-width@^2.1.1:
+string-width@^2.0.0, string-width@^2.1.0, string-width@^2.1.1:
   version "2.1.1"
   resolved "https://registry.yarnpkg.com/string-width/-/string-width-2.1.1.tgz#ab93f27a8dc13d28cac815c462143a6d9012ae9e"
   dependencies:
@@ -4035,6 +4442,17 @@ symbol-observable@^1.0.4, symbol-observable@^1.1.0:
   version "1.2.0"
   resolved "https://registry.yarnpkg.com/symbol-observable/-/symbol-observable-1.2.0.tgz#c22688aed4eab3cdc2dfeacbb561660560a00804"
 
+table@4.0.2:
+  version "4.0.2"
+  resolved "https://registry.yarnpkg.com/table/-/table-4.0.2.tgz#a33447375391e766ad34d3486e6e2aedc84d2e36"
+  dependencies:
+    ajv "^5.2.3"
+    ajv-keywords "^2.1.0"
+    chalk "^2.1.0"
+    lodash "^4.17.4"
+    slice-ansi "1.0.0"
+    string-width "^2.1.1"
+
 tapable@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/tapable/-/tapable-1.0.0.tgz#cbb639d9002eed9c6b5975eb20598d7936f1f9f2"
@@ -4057,7 +4475,7 @@ term-size@^1.2.0:
   dependencies:
     execa "^0.7.0"
 
-text-table@^0.2.0:
+text-table@^0.2.0, text-table@~0.2.0:
   version "0.2.0"
   resolved "https://registry.yarnpkg.com/text-table/-/text-table-0.2.0.tgz#7f5ee823ae805207c00af2df4a84ec3fcfa570b4"
 
@@ -4068,6 +4486,10 @@ through2@^2.0.0:
     readable-stream "^2.1.5"
     xtend "~4.0.1"
 
+through@^2.3.6:
+  version "2.3.8"
+  resolved "https://registry.yarnpkg.com/through/-/through-2.3.8.tgz#0dd4c9ffaabc357960b1b724115d7e0e86a2e1f5"
+
 time-zone@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/time-zone/-/time-zone-1.0.0.tgz#99c5bf55958966af6d06d83bdf3800dc82faec5d"
@@ -4082,6 +4504,12 @@ timers-browserify@^2.0.4:
   dependencies:
     setimmediate "^1.0.4"
 
+tmp@^0.0.33:
+  version "0.0.33"
+  resolved "https://registry.yarnpkg.com/tmp/-/tmp-0.0.33.tgz#6d34335889768d21b2bcda0aa277ced3b1bfadf9"
+  dependencies:
+    os-tmpdir "~1.0.2"
+
 to-arraybuffer@^1.0.0:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/to-arraybuffer/-/to-arraybuffer-1.0.1.tgz#7d229b1fcc637e466ca081180836a7aabff83f43"
@@ -4144,6 +4572,12 @@ tweetnacl@^0.14.3, tweetnacl@~0.14.0:
   version "0.14.5"
   resolved "https://registry.yarnpkg.com/tweetnacl/-/tweetnacl-0.14.5.tgz#5ae68177f192d4456269d108afa93ff8743f4f64"
 
+type-check@~0.3.2:
+  version "0.3.2"
+  resolved "https://registry.yarnpkg.com/type-check/-/type-check-0.3.2.tgz#5884cab512cf1d355e3fb784f30804b2b520db72"
+  dependencies:
+    prelude-ls "~1.1.2"
+
 typedarray@^0.0.6:
   version "0.0.6"
   resolved "https://registry.yarnpkg.com/typedarray/-/typedarray-0.0.6.tgz#867ac74e3864187b1d3d47d996a78ec5c8830777"
@@ -4309,14 +4743,14 @@ watchpack@^1.5.0:
     graceful-fs "^4.1.2"
     neo-async "^2.5.0"
 
-webassemblyjs@1.4.3:
-  version "1.4.3"
-  resolved "https://registry.yarnpkg.com/webassemblyjs/-/webassemblyjs-1.4.3.tgz#0591893efb8fbde74498251cbe4b2d83df9239cb"
+webassemblyjs@1.4.2:
+  version "1.4.2"
+  resolved "https://registry.yarnpkg.com/webassemblyjs/-/webassemblyjs-1.4.2.tgz#3b07b506917c97153d83441d8a88ffa2d25cc07d"
   dependencies:
-    "@webassemblyjs/ast" "1.4.3"
-    "@webassemblyjs/validation" "1.4.3"
-    "@webassemblyjs/wasm-parser" "1.4.3"
-    "@webassemblyjs/wast-parser" "1.4.3"
+    "@webassemblyjs/ast" "1.4.2"
+    "@webassemblyjs/validation" "1.4.2"
+    "@webassemblyjs/wasm-parser" "1.4.2"
+    "@webassemblyjs/wast-parser" "1.4.2"
     long "^3.2.0"
 
 webpack-sources@^1.0.1, webpack-sources@^1.1.0:
@@ -4327,12 +4761,12 @@ webpack-sources@^1.0.1, webpack-sources@^1.1.0:
     source-map "~0.6.1"
 
 webpack@^4.5.0:
-  version "4.8.3"
-  resolved "https://registry.yarnpkg.com/webpack/-/webpack-4.8.3.tgz#957c8e80000f9e5cc03d775e78b472d8954f4eeb"
+  version "4.8.2"
+  resolved "https://registry.yarnpkg.com/webpack/-/webpack-4.8.2.tgz#41aa00fd32a8f253a2f12a2da11c8ad4d52fde1c"
   dependencies:
-    "@webassemblyjs/ast" "1.4.3"
-    "@webassemblyjs/wasm-edit" "1.4.3"
-    "@webassemblyjs/wasm-parser" "1.4.3"
+    "@webassemblyjs/ast" "1.4.2"
+    "@webassemblyjs/wasm-edit" "1.4.2"
+    "@webassemblyjs/wasm-parser" "1.4.2"
     acorn "^5.0.0"
     acorn-dynamic-import "^3.0.0"
     ajv "^6.1.0"
@@ -4375,7 +4809,7 @@ widest-line@^2.0.0:
   dependencies:
     string-width "^2.1.1"
 
-wordwrap@1.0.0:
+wordwrap@1.0.0, wordwrap@~1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/wordwrap/-/wordwrap-1.0.0.tgz#27584810891456a4171c8d0226441ade90cbcaeb"
 
@@ -4423,6 +4857,12 @@ write-pkg@^3.1.0:
     sort-keys "^2.0.0"
     write-json-file "^2.2.0"
 
+write@^0.2.1:
+  version "0.2.1"
+  resolved "https://registry.yarnpkg.com/write/-/write-0.2.1.tgz#5fc03828e264cea3fe91455476f7a3c566cb0757"
+  dependencies:
+    mkdirp "^0.5.1"
+
 xdg-basedir@^3.0.0:
   version "3.0.0"
   resolved "https://registry.yarnpkg.com/xdg-basedir/-/xdg-basedir-3.0.0.tgz#496b2cc109eca8dbacfe2dc72b603c17c5870ad4"