bug fix and performance improvements

miniprogram/miniprogram_npm/tdesign-miniprogram/empty/README.en-US.md

@@ -0,0 +1,25 @@
+:: BASE_DOC ::
+
+## API
+
+### Empty Props
+
+name | type | default | description | required
+-- | -- | -- | -- | --
+action | Slot | - | \- | N
+description | String / Slot | - | \- | N
+external-classes | Array | - | `['t-class', 't-class-description', 't-class-image', 't-class-actions']` | N
+icon | String | - | \- | N
+image | String / Slot | - | \- | N
+
+
+### CSS Variables
+The component provides the following CSS variables, which can be used to customize styles.
+Name | Default Value | Description 
+-- | -- | --
+--td-empty-action-margin-top | @spacer-4 | - 
+--td-empty-description-color | @font-gray-3 | - 
+--td-empty-description-font-size | @font-size-base | - 
+--td-empty-description-line-height | 44rpx | - 
+--td-empty-description-margin-top | @spacer-2 | - 
+--td-empty-icon-color | @font-gray-3 | -