fix(button): setup unit tests

Author: codebender828

Diff for: babel.config.js

@@ -2,5 +2,13 @@ module.exports = {
   presets: [
     '@vue/app',
     '@babel/preset-env'
-  ]
+  ],
+  env: {
+    development: {
+      plugins: ['transform-es2015-modules-commonjs']
+    },
+    test: {
+      plugins: ['transform-es2015-modules-commonjs']
+    }
+  }
 }

Diff for: jest.config.js

@@ -11,7 +11,7 @@ module.exports = {
     '^.+\\.(js|jsx)?$': 'babel-jest'
   },
   transformIgnorePatterns: [
-    '/node_modules/'
+    '/node_modules/(?!lodash-es)'
   ],
   moduleNameMapper: {
     '^@/(.*)$': '<rootDir>/src/$1'

Diff for: package.json

@@ -31,6 +31,7 @@
   },
   "devDependencies": {
     "@babel/core": "^7.6.0",
+    "@babel/plugin-transform-modules-commonjs": "^7.6.0",
     "@commitlint/cli": "^8.2.0",
     "@commitlint/config-conventional": "^8.2.0",
     "@storybook/addon-actions": "^5.2.1",

Diff for: src/components/Button/button.test.js

@@ -1,5 +1,5 @@
 import { shallowMount } from '@vue/test-utils'
-import Button from '../../lib/core/'
+import Button from '../Button'
 import Theme from '../../../kiwi.config'
 
 describe('===== Button Component =====', () => {