diff --git a/.eslintignore b/.eslintignore
index e35801d..1457c9c 100644
--- a/.eslintignore
+++ b/.eslintignore
@@ -1,6 +1,7 @@
 /build/
 /config/
 /dist/
+/lib/
+/coverage/
 /*.js
-/__test__/
-/test/
+node_modules
diff --git a/.eslintrc.js b/.eslintrc.js
index ccec4fb..40219ff 100644
--- a/.eslintrc.js
+++ b/.eslintrc.js
@@ -7,6 +7,7 @@ module.exports = {
   },
   env: {
     browser: true,
+    jest: true
   },
   extends: [
     // https://github.com/vuejs/eslint-plugin-vue#priority-a-essential-error-prevention
@@ -25,7 +26,7 @@ module.exports = {
     'generator-star-spacing': 'off',
     // allow debugger during development
     'no-debugger': process.env.NODE_ENV === 'production' ? 'error' : 'off',
-    'no-console': process.env.NODE_ENV === 'production' ? ["error", { allow: ["warn", "error"] }] : 'off',
+    'no-console': ["error", { allow: ["warn", "error"] }],
     'camelcase': ['off', { properties: 'never' }],
     // "vue/max-attributes-per-line": [2, {
     //   "singleline": 1,
diff --git a/package-lock.json b/package-lock.json
index 448715e..629a616 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -329,9 +329,9 @@
       }
     },
     "@vue/test-utils": {
-      "version": "1.0.0-beta.18",
-      "resolved": "https://registry.npmjs.org/@vue/test-utils/-/test-utils-1.0.0-beta.18.tgz",
-      "integrity": "sha1-U8IsS5AhGpjb8nCMC3F8GK2qmTw=",
+      "version": "1.0.0-beta.20",
+      "resolved": "https://registry.npmjs.org/@vue/test-utils/-/test-utils-1.0.0-beta.20.tgz",
+      "integrity": "sha1-70UFNBuALz3hwGs8uGUTeMhzcfo=",
       "dev": true,
       "requires": {
         "lodash": "4.17.4"
diff --git a/package.json b/package.json
index 53f88aa..dbddfd2 100644
--- a/package.json
+++ b/package.json
@@ -11,9 +11,10 @@
     "dev": "cross-env NODE_ENV=development webpack-dev-server --hot --open --config build/webpack.dev.config.js",
     "demo": "cross-env NODE_ENV=production webpack --progress --hide-modules --config build/webpack.demo.config.js",
     "build": "cross-env NODE_ENV=production webpack --progress --hide-modules --config build/webpack.deploy.config.js",
+    "lint": "eslint src/**/* test/**/*",
     "test:push": "jest --coverage --coverageReporters=text-lcov | coveralls",
     "test": "jest",
-    "deploy": "npm test && npm run build"
+    "deploy": "npm run lint && npm test && npm run build"
   },
   "jest": {
     "moduleFileExtensions": [
@@ -46,7 +47,7 @@
     "fecha": "^2.3.3"
   },
   "devDependencies": {
-    "@vue/test-utils": "^1.0.0-beta.18",
+    "@vue/test-utils": "^1.0.0-beta.20",
     "autoprefixer": "^7.2.6",
     "babel-core": "^6.26.3",
     "babel-eslint": "^8.2.3",
diff --git a/src/mixins/locale.js b/src/mixins/locale.js
index 56cd614..fd6c7d7 100644
--- a/src/mixins/locale.js
+++ b/src/mixins/locale.js
@@ -13,7 +13,7 @@ export default {
           name = component.$options.name
         }
       }
-      const lang = component && component.language || defaultLang
+      const lang = (component && component.language) || defaultLang
       const arr = path.split('.')
       let current = lang
       let value