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uni_modules/nutui-uni/components/backtop/backtop.ts

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+import type { ExtractPropTypes } from 'vue'
+import { CLICK_EVENT } from '../_constants'
+import { commonProps, makeNumberProp, makeStringProp } from '../_utils'
+
+export const backtopProps = {
+  ...commonProps,
+  /**
+   * @description 滚动区域的高度
+   */
+  height: makeStringProp('100vh'),
+
+  /**
+   * @description 距离页面底部距离
+   */
+  bottom: makeNumberProp(20),
+
+  /**
+   * @description 距离页面右侧距离
+   */
+  right: makeNumberProp(10),
+
+  /**
+   * @description 页面垂直滚动多高后出现
+   */
+  distance: makeNumberProp(200),
+
+  /**
+   * @description 设置组件页面层级
+   */
+  zIndex: makeNumberProp(10),
+
+  /**
+   * @description 自定义图标颜色
+   */
+  customColor: String,
+}
+
+export type BacktopProps = ExtractPropTypes<typeof backtopProps>
+
+export const backtopEmits = {
+  [CLICK_EVENT]: (evt: MouseEvent) => evt instanceof Object,
+}
+
+export type BacktopEmits = typeof backtopEmits