我也想通过这样的方式引入组件，但是小程序上面确实编译不了，编译后不包含json文件，

小程序端是是必须有index.js和index.json，猜测是因为index.ts文件中引入组件的话，index.ts这个文件本身没有被识别为页面模块，所以不会生成.json。
不过也希望官方能提供点思路，我目前思路是设计引入规则，然后使用vite插件在transform时进行替换。
不然这样的代码：
import {Component1, Component2, Component3 } from '@/components'
就会变成
import Component1 from '@/components/Component1.vue'
import Component2 from '@/components/Component2.vue'
import Component3 from '@/components/Component3.vue'

直到今天，uniapp 编译到小程序后，仍然不支持这种写法

// foo.js
export { default as Wformapplyfortender } from "./wformapplyfortender/index.vue";
export { default as Wformhrsclasschange } from "./wformhrsclasschange/index.vue";
export { default as Wformhrscurstate } from "./wformhrscurstate/index.vue";
export { default as Wformhrsmove } from "./wformhrsmove/index.vue";
export { default as Wformhrsposition } from "./wformhrsposition/index.vue";
export { default as Wformhrsquit } from "./wformhrsquit/index.vue";
export { default as Wformhrsrecruitment } from "./wformhrsrecruitment/index.vue";
export { default as Wformhrsrehiring } from "./wformhrsrehiring/index.vue";
export { default as Wformhrsrenewalcheck } from "./wformhrsrenewalcheck/index.vue";
export { default as Wformhrsrepost } from "./wformhrsrepost/index.vue";
export { default as Wformhrswagesvary } from "./wformhrswagesvary/index.vue";
export { default as Wformproinspection } from "./wformproinspection/index.vue";

<script setup>
// bar.vue
import * as FlowComponents from "@/components/flow-components";
</script>