[Improvement] Support Vue.use to register a component (#401)

packages/utils/create.js

@@ -0,0 +1,19 @@
+/**
+ * Create a component with common options
+ */
+import '../locale';
+import Icon from '../icon';
+import i18n from '../mixins/i18n';
+import install from './install';
+import Loading from '../loading';
+
+export default function(sfc) {
+  sfc.mixins = sfc.mixins || [];
+  sfc.components = sfc.components || {};
+  sfc.install = sfc.install || install;
+  sfc.mixins.push(i18n);
+  sfc.components.icon = Icon;
+  sfc.components.loading = Loading;
+
+  return sfc;
+};

packages/utils/deep-assign.js

@@ -1,4 +1,6 @@
-const hasOwnProperty = Object.prototype.hasOwnProperty;
+import { isDef } from './';
+
+const { hasOwnProperty } = Object.prototype;
 
 function isObj(x) {
   const type = typeof x;
@@ -8,12 +10,7 @@ function isObj(x) {
 function assignKey(to, from, key) {
   const val = from[key];
 
-  if (
-    val === undefined ||
-    val === null ||
-    (hasOwnProperty.call(to, key) &&
-      (to[key] === undefined || to[key] === null))
-  ) {
+  if (!isDef(val) || (hasOwnProperty.call(to, key) && !isDef(to[key]))) {
     return;
   }
 

packages/utils/index.js

@@ -1,12 +1,13 @@
 import Vue from 'vue';
+import create from './create';
 
-export const isServer = Vue.prototype.$isServer;
+const isServer = Vue.prototype.$isServer;
 
-export function isDef(value) {
+function isDef(value) {
   return value !== undefined && value !== null;
 }
 
-export function get(object, path) {
+function get(object, path) {
   const keys = path.split('.');
   let result = object;
 
@@ -18,11 +19,20 @@ export function get(object, path) {
 }
 
 const camelizeRE = /-(\w)/g;
-export function camelize(str) {
+function camelize(str) {
   return str.replace(camelizeRE, (_, c) => c.toUpperCase());
 }
 
-export function isAndroid() {
+function isAndroid() {
   /* istanbul ignore next */
   return isServer ? false : /android/.test(navigator.userAgent.toLowerCase());
 }
+
+export {
+  get,
+  isDef,
+  create,
+  isServer,
+  camelize,
+  isAndroid
+};

packages/utils/install.js

@@ -0,0 +1,6 @@
+/**
+ * Install function to register a component
+ */
+export default function(Vue) {
+  Vue.component(this.name, this);
+}