feat(components): 暂时增加空的 Canvas, Navigator 组件，防止 H5 转换报错

Author: jinjinjin0731

packages/taro-components/src/components/canvas/index.js

@@ -0,0 +1,14 @@
+import Nerv from 'nervjs'
+
+class Canvas extends Nerv.Component {
+  componentDidMount () {
+    console.error('H5 暂不支持 Canvas 组件！,请直接用 H5 原生 canvas')
+  }
+
+  render () {
+    const { ...reset } = this.props
+    return <div {...reset}>{this.props.children}</div>
+  }
+}
+
+export default Canvas

packages/taro-components/src/components/navigator/index.js

@@ -0,0 +1,14 @@
+import Nerv from 'nervjs'
+
+class Navigator extends Nerv.Component {
+  componentDidMount () {
+    console.error('H5 暂不支持 Navigator 组件！请直接用 a 标签代替')
+  }
+
+  render () {
+    const { ...reset } = this.props
+    return <div {...reset}>{this.props.children}</div>
+  }
+}
+
+export default Navigator

packages/taro-components/src/index.js

@@ -25,6 +25,7 @@ export { default as CheckboxGroup } from './components/checkbox/checkbox-group'
 export { default as Tabbar } from './components/tabbar'
 export { default as TabbarContainer } from './components/tabbar/container'
 export { default as TabbarPanel } from './components/tabbar/panel'
-// export { default as Navigator } from './components/navigator'
+export { default as Navigator } from './components/navigator'
 export { default as WebView } from './components/web-view'
 export { default as OpenData } from './components/open-data'
+export { default as Canvas } from './components/canvas'