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

src/number-keyboard/Key.js

@@ -0,0 +1,65 @@
+import { createNamespace } from '../utils';
+
+const [createComponent, bem] = createNamespace('key');
+
+export default createComponent({
+  props: {
+    type: String,
+    theme: Array,
+    text: [String, Number]
+  },
+
+  data() {
+    return {
+      active: false
+    };
+  },
+
+  computed: {
+    className() {
+      const classNames = this.theme.slice(0);
+
+      if (this.active) {
+        classNames.push('active');
+      }
+
+      if (this.type) {
+        classNames.push(this.type);
+      }
+
+      return bem(classNames);
+    }
+  },
+
+  methods: {
+    onFocus() {
+      this.active = true;
+    },
+
+    onBlur(event) {
+      this.active = false;
+    },
+
+    onClick() {
+      this.$emit('press', this.text, this.type);
+    }
+  },
+
+  render(h) {
+    const { onBlur } = this;
+    return (
+      <i
+        role="button"
+        tabindex="0"
+        class={['van-hairline', this.className]}
+        onClick={this.onClick}
+        onTouchstart={this.onFocus}
+        onTouchmove={onBlur}
+        onTouchend={onBlur}
+        onTouchcancel={onBlur}
+      >
+        {this.slots('default') || this.text}
+      </i>
+    );
+  }
+});