feat(Calendar): add basic files

src/calendar/index.js

@@ -0,0 +1,57 @@
+import { createNamespace } from '../utils';
+import { isDate } from '../utils/validate/date';
+
+const [createComponent, bem, t] = createNamespace('calendar');
+const now = new Date();
+
+export default createComponent({
+  props: {
+    title: String,
+    minDate: {
+      type: Date,
+      default: () => new Date(now),
+      validator: isDate
+    },
+    maxDate: {
+      type: Date,
+      default: () => new Date(now.getFullYear(), now.getMonth() + 6, now.getDate()),
+      validator: isDate
+    }
+  },
+
+  data() {
+    return {};
+  },
+
+  methods: {
+    genTitle() {
+      if (this.title) {
+        return <div class={bem('title')}>{this.title}</div>;
+      }
+    },
+
+    genWeekDays() {
+      const weekdays = t('weekdays');
+
+      return (
+        <div class={bem('weekdays')}>
+          {weekdays.map(item => (
+            <span class={bem('weekday')}>{item}</span>
+          ))}
+        </div>
+      );
+    },
+
+    genMonth() {}
+  },
+
+  render() {
+    return (
+      <div class={bem()}>
+        {this.genTitle()}
+        {this.genWeekDays()}
+        <div class={bem('body')}></div>
+      </div>
+    );
+  }
+});