webpack - vue2升级vue3报错，求大佬看一下？

Question

vue2升级vue3报错

这个是package.js配置。

{  "name": "vue",  "version": "1.0.0",  "description": "A Vue.js project",  "author": "zyt",  "private": true,  "scripts": {    "dev": "node build/dev-server.js",    "start": "node build/dev-server.js",    "build": "node --max_old_space_size=4096 build/build.js",    "lint": "eslint --ext .js,.vue src"  },  "dependencies": {    "@amap/amap-jsapi-loader": "^1.0.1",    "@babel/runtime": "^7.20.1",    "axios": "^0.17.1",    "core-js": "^2.6.12",    "crypto": "^1.0.1",    "crypto-js": "^4.1.1",    "echarts": "^3.7.1",    "echarts-liquidfill": "^3.1.0",    "echarts5": "npm:echarts@5",    "element-plus": "^2.4.4",    "fastclick": "^1.0.6",    "file-saver": "^1.3.3",    "highcharts": "^5.0.14",    "html2canvas": "^1.4.1",    "js-cookie": "^2.1.4",    "jspdf": "^2.5.1",    "moment": "^2.19.2",    "net": "^1.0.2",    "node-sass": "^6.0.1",    "nprogress": "^0.2.0",    "qs": "^6.11.0",    "sass-loader": "^10.3.1",    "screenfull": "^3.3.1",    "stompjs": "^2.3.3",    "typescript": "^5.3.3",    "vue": "^3.2.33",    "vue-3d-model": "^1.4.1",    "vue-amap": "^0.5.8",    "vue-count-to": "^1.0.13",    "vue-highcharts": "0.0.10",    "vue-qr": "^2.2.1",    "vue-resource": "^1.3.4",    "vue-router": "^4.0.13",    "vue-seamless-scroll": "^1.1.23",    "vue3-treeselect": "^0.1.10",    "vuex": "^4.0.2",    "xlsx": "^0.12.3",    "zrender": "^5.4.0"  },  "devDependencies": {    "@vue/compat": "^3.2.33",    "@vue/compiler-sfc": "^3.2.33",    "@vue/composition-api": "^1.7.2",    "autoprefixer": "^7.1.2",    "babel-core": "^6.22.1",    "babel-eslint": "^7.1.1",    "babel-helper-vue-jsx-merge-props": "^2.0.3",    "babel-loader": "^7.1.1",    "babel-plugin-syntax-jsx": "^6.18.0",    "babel-plugin-transform-runtime": "^6.22.0",    "babel-plugin-transform-vue-jsx": "^3.7.0",    "babel-polyfill": "^6.26.0",    "babel-preset-env": "^1.7.0",    "babel-preset-stage-2": "^6.22.0",    "babel-register": "^6.22.0",    "chalk": "^2.4.2",    "clean-webpack-plugin": "^4.0.0",    "compression-webpack-plugin": "^1.1.11",    "connect-history-api-fallback": "^1.3.0",    "copy-webpack-plugin": "^6.4.1",    "css-loader": "^0.28.0",    "cssnano": "^3.10.0",    "eslint": "^3.19.0",    "eslint-config-standard": "^6.2.1",    "eslint-friendly-formatter": "^3.0.0",    "eslint-loader": "^1.7.1",    "eslint-plugin-html": "^3.0.0",    "eslint-plugin-promise": "^3.4.0",    "eslint-plugin-standard": "^2.0.1",    "eslint-webpack-plugin": "^4.0.1",    "eventsource-polyfill": "^0.9.6",    "express": "^4.14.1",    "extract-text-webpack-plugin": "^2.0.0",    "file-loader": "^6.2.0",    "friendly-errors-webpack-plugin": "^1.1.3",    "html-webpack-plugin": "^3.2.0",    "http-proxy-middleware": "^0.17.3",    "image-webpack-loader": "^8.1.0",    "jsencrypt": "^3.0.0-rc.1",    "mini-css-extract-plugin": "^1.6.2",    "opn": "^5.1.0",    "optimize-css-assets-webpack-plugin": "^2.0.0",    "ora": "^1.2.0",    "postcss-loader": "^7.0.1",    "raphael": "^2.3.0",    "rimraf": "^2.6.0",    "sass-loader": "^10.3.1",    "semver": "^5.3.0",    "shelljs": "^0.7.6",    "svg-sprite-loader": "latest",    "terser-webpack-plugin": "^4.2.3",    "uglifyjs-webpack-plugin": "^2.2.0",    "url-loader": "^4.1.1",    "vue-fullscreen": "^2.1.3",    "vue-loader": "^16.8.3",    "vue-style-loader": "^4.1.3",    "vue-treeselect": "^1.0.6",    "webpack": "^4.46.0",    "webpack-bundle-analyzer": "^4.6.1",    "webpack-cli": "^3.3.12",    "webpack-dev-middleware": "^1.10.0",    "webpack-hot-middleware": "^2.18.0",    "webpack-merge": "^4.1.0"  },  "engines": {    "node": ">= 4.0.0",    "npm": ">= 3.0.0"  },  "browserslist": [    "> 1%",    "last 2 versions",    "not ie <= 8"  ]}

这个是webpack配置
目前的目前的报错是vue-loader相关。

求求大佬告知一下，什么原因，

Answer 1

webpack配置有没有加入vue-loader的插件?

module.exports={  //...  plugins:[      new VueLoaderPlugin()  ]}

参考:vue-loader文档