mixins 下使用 mapState

[476421978]

Description

想在wepy的mixins下使用mapState

Environment

• Platform: vscode
• Wechat version: 2.19.1
• wepy version: "@wepy/core": "^2.0.0-alpha.16"
• wepy/x version: "@wepy/x": "^2.0.2

Reproduce

只需在mixins中引入mapState搭配store下任意state即可
例如：

mixins/common.js

import { mapState } from '@wepy/x'
export default {
  computed: {
    ...mapState([ 'UserInfo' ])
  }
}

store/index.js

import Vuex from '@wepy/x'
export default new Vuex.Store({
  state: {
    UserInfo: {}
  }
})

对应的wpy页面引用

<script>
import commonMixins from '@/mixins/common'
wepy.page({
    mixins: [commonMixins],
})
</script>

Observed Results

页面this.$store为null

Expected Results

[期望表现]
能正常运行不报错

Relevant Code / Logs