<script setup>开发模式可以用，打包之后空白，export default {}方式正常

[Jokerjs]

{
"name": "lims_system",
"version": "0.1.0",
"private": true,
"scripts": {
"serve": "vue-cli-service serve",
"build": "vue-cli-service build",
"lint": "vue-cli-service lint"
},
"dependencies": {
"core-js": "^3.6.5",
"vue": "^3.0.0",
"vue-router": "^4.0.0-0",
"vuex": "^4.0.0-0"
},
"devDependencies": {
"@riophae/vue-treeselect": "^0.4.0",
"@vue/cli-plugin-babel": "~4.5.0",
"@vue/cli-plugin-eslint": "~4.5.0",
"@vue/cli-plugin-router": "~4.5.0",
"@vue/cli-plugin-vuex": "~4.5.0",
"@vue/cli-service": "~4.5.0",
"@vue/compiler-sfc": "^3.0.0",
"axios": "^0.21.1",
"babel-eslint": "^10.1.0",
"element-plus": "^1.0.2-beta.44",
"eslint": "^6.7.2",
"eslint-plugin-vue": "^7.0.0",
"node-sass": "^4.12.0",
"sass-loader": "^8.0.2"
}
}

求解。。。。。。

[posva]

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