node从14升级到16之后，项目就无法启动了，研究了webpack3升级5，研究好几个小时都无法启动，最后发现，微微升级几个版本就可以了。webpack还是3

新版的依赖

  "scripts": {
    "dev": "webpack-dev-server --inline --progress --config build/webpack.dev.conf.js",
    "start": "npm run dev",
    "build": "node build/build.js"
  },
  "dependencies": {
    "array-includes": "^3.0.3",
    "axios": "^0.18.0",
    "element-ui": "^2.12.0",
    "file-saver": "^1.3.8",
    "node-sass": "^6.0.1",
    "highlight.js": "^10.2.0",
    "js-md5": "^0.6.1",
    "protobufjs": "^7.1.0",
    "protobufjs-cli": "^1.1.1",
    "vue": "^2.6.10",
    "vue-router": "^3.0.1",
    "vuex": "^3.0.1",
    "vuex-persistedstate": "^2.7.0",
    "xlsx": "^0.13.4"
  },
  "devDependencies": {
    "autoprefixer": "^7.1.2",
    "babel-core": "^6.22.1",
    "babel-helper-vue-jsx-merge-props": "^2.0.3",
    "babel-loader": "^7.1.5",
    "babel-plugin-syntax-jsx": "^6.18.0",
    "babel-plugin-transform-runtime": "^6.22.0",
    "babel-plugin-transform-vue-jsx": "^3.5.0",
    "babel-polyfill": "^6.26.0",
    "babel-preset-env": "^1.3.2",
    "babel-preset-es2015": "^6.24.1",
    "babel-preset-stage-2": "^6.22.0",
    "chalk": "^2.4.2",
    "copy-webpack-plugin": "^4.6.0",
    "css-loader": "^0.28.11",
    "extract-text-webpack-plugin": "^3.0.0",
    "file-loader": "^1.1.11",
    "friendly-errors-webpack-plugin": "^1.6.1",
    "html-webpack-plugin": "^2.30.1",
    "jquery": "^3.4.1",
    "node-notifier": "^5.4.0",
    "optimize-css-assets-webpack-plugin": "^3.2.0",
    "ora": "^1.2.0",
    "portfinder": "^1.0.20",
    "postcss-import": "^11.0.0",
    "postcss-loader": "^2.1.6",
    "postcss-url": "^7.2.1",
    "rimraf": "^2.6.3",
    "sass-loader": "^6.0.6",
    "sass-resources-loader": "^1.3.3",
    "semver": "^5.7.0",
    "shelljs": "^0.7.6",
    "style-loader": "^0.21.0",
    "uglifyjs-webpack-plugin": "^1.3.0",
    "url-loader": "^0.5.8",
    "vue-loader": "^13.7.3",
    "vue-style-loader": "^3.0.1",
    "vue-template-compiler": "^2.6.10",
    "webpack": "^3.6.0",
    "webpack-bundle-analyzer": "^2.9.0",
    "webpack-dev-server": "^2.11.5",
    "webpack-merge": "^4.2.1",
    "webpack-parallel-uglify-plugin": "^1.1.2"
  },