vue2老版本 npm install 安装失败_安装卡主
特别说明：vue2老版本安装慢、运行慢，建议升级vue3+element plus+ vite
解决方案1：
第一步、修改npm 镜像为国内镜像
使用淘宝镜像：
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npm config set registry https://registry.npmmirror.com清除缓存：
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npm cache clean --force查看镜像配置是否成功：
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npm config set registry第二步、升级 vue-core-js版本
"core-js": "^3.6.5" 升级版本直接修改版本号
javascript
{
"name": "back",
"version": "0.1.0",
"private": true,
"scripts": {
"serve": "set NODE_OPTIONS=--openssl-legacy-provider && vue-cli-service serve",
"build": "set NODE_OPTIONS=--openssl-legacy-provider && vue-cli-service build",
"lint": "vue-cli-service lint"
},
"dependencies": {
"core-js": "^3.6.5",
"element-ui": "^2.15.0",
"vue": "^2.6.11",
"vue-clipboard3": "^2.0.0",
"vue-router": "^3.5.3",
"vue-ueditor-wrap": "^2.4.4"
},
"devDependencies": {
"@vue/cli-plugin-babel": "~4.5.0",
"@vue/cli-plugin-eslint": "~4.5.0",
"@vue/cli-plugin-router": "^4.5.11",
"@vue/cli-service": "~4.5.0",
"babel-eslint": "^10.1.0",
"eslint": "^6.7.2",
"eslint-plugin-vue": "^6.2.2",
"vue-template-compiler": "^2.6.11"
},
"eslintConfig": {
"root": true,
"env": {
"node": true,
"browser": true,
"jquery": true
},
"extends": [
"plugin:vue/essential",
"eslint:recommended"
],
"parserOptions": {
"parser": "babel-eslint"
},
"rules": {
"no-console": "off",
"no-unused-vars": "off",
"no-undef": "off",
"generator-star-spacing": "off",
"no-tabs": "off",
"no-irregular-whitespace": "off",
"no-debugger": "off",
"no-redeclare": "off",
"no-inner-declarations": "off",
"no-unused-labels": "off",
"vue/no-unused-vars": "off",
"vue/no-unused-components": "off"
}
},
"browserslist": [
"> 1%",
"last 2 versions",
"not dead"
]
}删除文件 package-lock.json
第三步，重新执行安装命令
javascript
npm i安装时间还是比较长，大约10分钟左右；
解决方案2：
还有一种方案，可以复制其他项目已经安装成功的 node_modules 文件夹，直接复制。
文件夹内容比较大 >100mb
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