npm install报错：peer
npm notice
npm notice New minor version of npm available! 7.19.1 -> 7.24.1
npm notice Changelog: https://github.com/npm/cli/releases/tag/v7.24.1
npm notice Run npm install -g [email protected] to update!
npm notice
npm ERR! code ERESOLVE
npm ERR! ERESOLVE unable to resolve dependency tree
npm ERR!
npm ERR! Found: [email protected]
npm ERR! node_modules/eslint
npm ERR! dev eslint@"7.15.0" from the root project
npm ERR! peer eslint@">= 1.6.0" from @vue/[email protected]
npm ERR! node_modules/@vue/cli-plugin-eslint
npm ERR! dev @vue/cli-plugin-eslint@"4.4.6" from the root project
npm ERR! 2 more (babel-eslint, eslint-plugin-vue)
npm ERR!
npm ERR! Could not resolve dependency:
npm ERR! peer eslint@">=1.6.0 <7.0.0" from [email protected]
npm ERR! node_modules/@vue/cli-plugin-eslint/node_modules/eslint-loader
npm ERR! eslint-loader@"^2.2.1" from @vue/[email protected]
npm ERR! node_modules/@vue/cli-plugin-eslint
npm ERR! dev @vue/cli-plugin-eslint@"4.4.6" from the root project
npm ERR!
npm ERR! Fix the upstream dependency conflict, or retry
npm ERR! this command with --force, or --legacy-peer-deps
npm ERR! to accept an incorrect (and potentially broken) dependency resolution.
npm ERR!
npm ERR! See D:\softcache\node_cache\eresolve-report.txt for a full report.
npm ERR! A complete log of this run can be found in:
npm ERR! D:\softcache\node_cache\_logs\2021-10-01T12_28_46_105Z-debug.log
开始一直纠结peer eslint@相关信息，未找到明确办法
偶然想到有提示Run npm install -g [email protected] to update!
想着先升个级吧，结果升级完问题解决
后来另一个项目仍旧提示类似错误
npm ERR! code ERESOLVE
npm ERR! ERESOLVE unable to resolve dependency tree
npm ERR!
npm ERR! While resolving: [email protected]
npm ERR! Found: [email protected]
npm ERR! node_modules/html-webpack-plugin
npm ERR! dev html-webpack-plugin@"4.0.0-alpha" from the root project
npm ERR!
npm ERR! Could not resolve dependency:
npm ERR! peer html-webpack-plugin@"^3.0.0" from [email protected]
npm ERR! node_modules/script-ext-html-webpack-plugin
npm ERR! dev script-ext-html-webpack-plugin@"2.0.1" from the root project
npm ERR!
npm ERR! Fix the upstream dependency conflict, or retry
npm ERR! this command with --force, or --legacy-peer-deps
npm ERR! to accept an incorrect (and potentially broken) dependency resolution.
npm ERR!
npm ERR! See D:\softcache\node_cache\eresolve-report.txt for a full report.
再看提示使用：
–force 会无视冲突，并强制获取远端npm库资源，即使本地有资源也会覆盖掉
–legacy-peer-deps：安装时忽略所有peerDependencies，忽视依赖冲突，采用npm版本4到版本6的样式去安装依赖，已有的依赖不会覆盖
采用提示的第二种方式解决
npm install报错：Parsing error
报错各种Parsing error:
Module Warning (from ./node_modules/eslint-loader/index.js):
error: Parsing error: The keyword 'const' is reserved at src\router\order.js:1:1:
> 1 | const Tabbar = () => import('@/components/Tabbar/');
| ^
2 |
3 | export default [
4 | {
……
Module Warning (from ./node_modules/eslint-loader/index.js):
error: Parsing error: Unexpected token < at src\views\user\tabbar-user-header.vue:1:1:
> 1 | <template>
| ^
2 | <div class="user_header" :style="{backgroundImage: `url(${background_image})`}">
3 | <van-icon name="set" class="user_set" @click="toSetting"/>
4 | <div class="user_avatar">
尝试1：失败
开发环境与ESLint当前的解析功能不兼容，安装：
npm install babel-eslint --save-dev
.eslintrc中添加"parser": “babel-eslint”
尝试2：解决
.eslintrc修改
parserOptions: {
sourceType: ‘module’
},
parser: “vue-eslint-parser”,
env: {
browser: true,
node: true,
es6: true,
},