[improvement] rename packages dir to src (#3659)

src/sidebar-item/index.js

@@ -0,0 +1,43 @@
+import { createNamespace } from '../utils';
+import Info from '../info';
+import { ChildrenMixin } from '../mixins/relation';
+
+const [createComponent, bem] = createNamespace('sidebar-item');
+
+export default createComponent({
+  mixins: [ChildrenMixin('vanSidebar')],
+
+  props: {
+    url: String,
+    info: [String, Number],
+    title: String
+  },
+
+  computed: {
+    select() {
+      return this.index === +this.parent.activeKey;
+    }
+  },
+
+  methods: {
+    onClick() {
+      this.$emit('click', this.index);
+      this.parent.$emit('change', this.index);
+    }
+  },
+
+  render(h) {
+    return (
+      <a
+        href={this.url}
+        class={[bem({ select: this.select }), 'van-hairline']}
+        onClick={this.onClick}
+      >
+        <div class={bem('text')}>
+          {this.title}
+          <Info info={this.info} class={bem('info')} />
+        </div>
+      </a>
+    );
+  }
+});