fix(dev): upgrade dependencies

.eslintrc

@@ -1,5 +1,6 @@
 {
   "extends": "eslint-config-airbnb/base",
+  "parser": "babel-eslint",
   "env": {
     "mocha": true,
     "node": true
@@ -8,10 +9,12 @@
     "expect": true
   },
   "rules": {
+    "arrow-body-style": 0,
     "padded-blocks": 0,
     "no-use-before-define": [2, "nofunc"],
     "no-unused-expressions": 0,
     "no-reserved-keys": 0,
-    "space-infix-ops": 0
+    "space-infix-ops": 0,
+    "import/no-extraneous-dependencies": 0
   }
 }

.npmignore

@@ -1 +1,7 @@
 src
+.babelrc
+.eslintrc
+.npmrc
+.nvmrc
+.travis.yml
+Makefile

.nvmrc

@@ -0,0 +1 @@
+6.3

package.json

@@ -24,20 +24,21 @@
   },
   "license": "MIT",
   "devDependencies": {
-    "babel-cli": "6.4.0",
-    "babel-core": "6.3.26",
-    "babel-eslint": "6.0.1",
-    "babel-preset-es2015": "6.3.13",
-    "babel-preset-stage-0": "6.3.13",
-    "chai": "3.4.1",
-    "eslint": "1.10.3",
-    "eslint-config-airbnb": "2.1.1",
-    "lodash.isplainobject": "3.2.0",
-    "mocha": "2.3.4",
+    "babel-cli": "6.11.4",
+    "babel-core": "6.13.2",
+    "babel-eslint": "6.1.2",
+    "babel-preset-es2015": "6.13.2",
+    "babel-preset-stage-0": "6.5.0",
+    "chai": "3.5.0",
+    "eslint": "3.3.1",
+    "eslint-config-airbnb": "10.0.1",
+    "eslint-plugin-import": "1.13.0",
+    "lodash.isplainobject": "4.0.6",
+    "mocha": "3.0.2",
     "semantic-release": "4.3.5"
   },
   "dependencies": {
-    "flux-standard-action": "0.6.0",
-    "is-my-json-valid": "2.12.3"
+    "flux-standard-action": "0.6.1",
+    "is-my-json-valid": "2.13.1"
   }
 }

src/__tests__/createAction-test.js

@@ -1,5 +1,5 @@
-import { createAction } from '../';
 import isPlainObject from 'lodash.isplainobject';
+import { createAction } from '../';
 
 describe('createAction()', () => {
   describe('resulting action creator', () => {

src/__tests__/init.js

@@ -1,2 +1,3 @@
 import chai from 'chai';
+
 global.expect = chai.expect;

src/createAction.js

@@ -28,13 +28,17 @@ function propertyCreator(spec, name) {
   }
   if (typeof spec === 'object' && spec instanceof Array) {
     return (data) => spec.reduce((res, prop) => {
-      res[prop] = data[prop];
-      return res;
+      return {
+        ...res,
+        [prop]: data[prop],
+      };
     }, {});
   }
   if (isValidator(spec)) {
     return validatedIdentity(spec, name);
   }
+
+  return undefined;
 }
 
 export default function createAction(type, payloadSpec, metaSpec) {