win7升级到win10系统后，node13升级为node16，node版本node-sass版本与不匹配，导致出现npm ERR! ERESOLVE could not resolve

1. 错误npm ERR! code ERESOLVE

系统从win7升级到win10，之前的node版本是13.14.0，现在版本是16.17.1。正常的vue程序无法正常运行。从网上查询得知"node-sass": "^4.14.1"需要安装python2.7和vs_BuildTools，于是安装python2.7和visual C++2019，设置npm config set python C:\Users\Administrator\.windows-build-tools\python27\python.exe。

运行程序，仍然报错。一气之下删除node_modules文件夹，重新npm安装依赖包。

结果出现npm ERR! ERESOLVE could not resolve错误，如下：

I:fontend2mango-ui>npm install npm ERR! code ERESOLVE npm ERR! ERESOLVE could not resolve npm ERR! npm ERR! While resolving: extract-text-webpack-plugin@1.0.1 npm ERR! Found: webpack@3.12.0 npm ERR! node_modules/webpack npm ERR!   dev webpack@"^3.6.0" from the root project       npm ERR!   peer webpack@"2 || 3 || 4" from babel-loader@7.1.5 npm ERR!   node_modules/babel-loader npm ERR!     dev babel-loader@"^7.1.1" from the root project npm ERR!   8 more (file-loader, friendly-errors-webpack-plugin, ...) npm ERR! npm ERR! Could not resolve dependency: npm ERR! peer webpack@"^1.9.11" from extract-text-webpack-plugin@1.0.1 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 H:toolsnodejsnode_cacheeresolve-report.txt for a full report.  npm ERR! A complete log of this run can be found in: npm ERR!     H:toolsnodejsnode_cache_logs2022-10-09T13_31_26_126Z-debug-0.log 

2.使用npm install --save --legacy-peer-deps安装依赖

npm install --save --legacy-peer-deps 

仍然出现错误，如下：

npm ERR! code 1 npm ERR! path I:fontend2mango-uinode_modulesnode-sass npm ERR! command failed npm ERR! command C:Windowssystem32cmd.exe /d /s /c C:UsersADMINI~1AppDataLocalTemppostinstall-b7425044.cmd npm ERR! Building: D:Program Filesnodejsnode.exe I:fontend2mango-uinode_modulesnode-gypbinnode-gyp.js rebuild --verbose --libsass_ext= --libsass_cflags= --l ibsass_ldflags= --libsass_library= npm ERR! gyp info it worked if it ends with ok npm ERR! gyp verb cli [ npm ERR! gyp verb cli   'D:\Program Files\nodejs\node.exe', npm ERR! gyp verb cli   'I:\fontend\2\mango-ui\node_modules\node-gyp\bin\node-gyp.js', npm ERR! gyp verb cli   'rebuild', npm ERR! gyp verb cli   '--verbose', npm ERR! gyp verb cli   '--libsass_ext=', npm ERR! gyp verb cli   '--libsass_cflags=', npm ERR! gyp verb cli   '--libsass_ldflags=', npm ERR! gyp verb cli   '--libsass_library=' npm ERR! gyp verb cli ] npm ERR! gyp info using node-gyp@3.8.0 npm ERR! gyp info using node@16.17.1 | win32 | x64 npm ERR! gyp verb command rebuild [] npm ERR! gyp verb command clean [] npm ERR! gyp verb clean removing "build" directory npm ERR! gyp verb command configure [] npm ERR! gyp verb check python checking for Python executable "C:UsersAdministrator.windows-build-toolspython27python.exe" in the PATH npm ERR! gyp verb `which` succeeded C:UsersAdministrator.windows-build-toolspython27python.exe C:UsersAdministrator.windows-build-toolspython27python.exe    npm ERR! gyp verb check python version `C:UsersAdministrator.windows-build-toolspython27python.exe -c "import sys; print "2.7.15 npm ERR! gyp verb check python version .%s.%s" % sys.version_info[:3];"` returned: %j npm ERR! gyp verb get node dir no --target version specified, falling back to host node version: 16.17.1 npm ERR! gyp verb command install [ '16.17.1' ] npm ERR! gyp verb install input version string "16.17.1" npm ERR! gyp verb install installing version: 16.17.1 npm ERR! gyp verb install --ensure was passed, so won't reinstall if already installed npm ERR! gyp verb install version is already installed, need to check "installVersion" npm ERR! gyp verb got "installVersion" 9 npm ERR! gyp verb needs "installVersion" 9 npm ERR! gyp verb install version is good npm ERR! gyp verb get node dir target node version installed: 16.17.1 npm ERR! gyp verb build dir attempting to create "build" dir: I:fontend2mango-uinode_modulesnode-sassbuild npm ERR! gyp verb build dir "build" dir needed to be created? I:fontend2mango-uinode_modulesnode-sassbuild npm ERR! gyp verb find vs2017 Found installation at: C:Program Files (x86)Microsoft Visual Studio2019BuildTools npm ERR! gyp verb find vs2017   - Found Microsoft.VisualStudio.Component.Windows10SDK.19041 npm ERR! gyp verb find vs2017   - Found Microsoft.VisualStudio.Component.VC.Tools.x86.x64 npm ERR! gyp verb find vs2017   - Found Microsoft.VisualStudio.VC.MSBuild.Base npm ERR! gyp verb find vs2017   - Using this installation with Windows 10 SDK npm ERR! gyp verb find vs2017 using installation: C:Program Files (x86)Microsoft Visual Studio2019BuildTools npm ERR! gyp verb build/config.gypi creating config file npm ERR! gyp verb build/config.gypi writing out config file: I:fontend2mango-uinode_modulesnode-sassbuildconfig.gypi npm ERR! (node:3484) [DEP0150] DeprecationWarning: Setting process.config is deprecated. In the future the property will be read-only. npm ERR! (Use `node --trace-deprecation ...` to show where the warning was created) npm ERR! gyp verb config.gypi checking for gypi file: I:fontend2mango-uinode_modulesnode-sassconfig.gypi npm ERR! gyp verb common.gypi checking for gypi file: I:fontend2mango-uinode_modulesnode-sasscommon.gypi npm ERR! gyp verb gyp gyp format was not specified; forcing "msvs" npm ERR! gyp info spawn C:UsersAdministrator.windows-build-toolspython27python.exe npm ERR! gyp info spawn args [ npm ERR! gyp info spawn args   'I:\fontend\2\mango-ui\node_modules\node-gyp\gyp\gyp_main.py', npm ERR! gyp info spawn args   'binding.gyp', npm ERR! gyp info spawn args   '-f', npm ERR! gyp info spawn args   'msvs', npm ERR! gyp info spawn args   '-G', npm ERR! gyp info spawn args   'msvs_version=2015', npm ERR! gyp info spawn args   '-I', npm ERR! gyp info spawn args   'I:\fontend\2\mango-ui\node_modules\node-sass\build\config.gypi', npm ERR! gyp info spawn args   '-I', npm ERR! gyp info spawn args   'I:\fontend\2\mango-ui\node_modules\node-gyp\addon.gypi', npm ERR! gyp info spawn args   '-I', npm ERR! gyp info spawn args   'C:\Users\Administrator\.node-gyp\16.17.1\include\node\common.gypi', npm ERR! gyp info spawn args   '-Dlibrary=shared_library', npm ERR! gyp info spawn args   '-Dvisibility=default', npm ERR! gyp info spawn args   '-Dnode_root_dir=C:\Users\Administrator\.node-gyp\16.17.1', npm ERR! gyp info spawn args   '-Dnode_gyp_dir=I:\fontend\2\mango-ui\node_modules\node-gyp', npm ERR! gyp info spawn args   '-Dnode_lib_file=C:\Users\Administrator\.node-gyp\16.17.1\<(target_arch)\node.lib', npm ERR! gyp info spawn args   '-Dmodule_root_dir=I:\fontend\2\mango-ui\node_modules\node-sass', npm ERR! gyp info spawn args   '-Dnode_engine=v8', npm ERR! gyp info spawn args   '--depth=.', npm ERR! gyp info spawn args   '--no-parallel', npm ERR! gyp info spawn args   '--generator-output', npm ERR! gyp info spawn args   'I:\fontend\2\mango-ui\node_modules\node-sass\build', npm ERR! gyp info spawn args   '-Goutput_dir=.' npm ERR! gyp info spawn args ] npm ERR! gyp verb command build [] npm ERR! gyp verb build type Release npm ERR! gyp verb architecture x64 npm ERR! gyp verb node dev dir C:UsersAdministrator.node-gyp16.17.1 npm ERR! gyp verb found first Solution file build/binding.sln npm ERR! gyp verb using MSBuild: C:Program Files (x86)Microsoft Visual Studio2019BuildToolsMSBuild15.0BinMSBuild.exe npm ERR! gyp info spawn C:Program Files (x86)Microsoft Visual Studio2019BuildToolsMSBuild15.0BinMSBuild.exe npm ERR! gyp info spawn args [ npm ERR! gyp info spawn args   'build/binding.sln', npm ERR! gyp info spawn args   '/nologo', npm ERR! gyp info spawn args   '/p:Configuration=Release;Platform=x64' npm ERR! gyp info spawn args ] npm ERR! gyp ERR! UNCAUGHT EXCEPTION npm ERR! gyp ERR! stack Error: spawn C:Program Files (x86)Microsoft Visual Studio2019BuildToolsMSBuild15.0BinMSBuild.exe ENOENT npm ERR! gyp ERR! stack     at Process.ChildProcess._handle.onexit (node:internal/child_process:283:19) npm ERR! gyp ERR! stack     at onErrorNT (node:internal/child_process:478:16) npm ERR! gyp ERR! stack     at processTicksAndRejections (node:internal/process/task_queues:83:21) npm ERR! gyp ERR! System Windows_NT 10.0.19044 npm ERR! gyp ERR! command "D:\Program Files\nodejs\node.exe" "I:\fontend\2\mango-ui\node_modules\node-gyp\bin\node-gyp.js" "rebuild" "--verbose" "--libsass_ ext=" "--libsass_cflags=" "--libsass_ldflags=" "--libsass_library=" npm ERR! gyp ERR! cwd I:fontend2mango-uinode_modulesnode-sass npm ERR! gyp ERR! node -v v16.17.1 npm ERR! gyp ERR! node-gyp -v v3.8.0 npm ERR! gyp ERR! This is a bug in `node-gyp`. npm ERR! gyp ERR! Try to update node-gyp and file an Issue if it does not help: npm ERR! gyp ERR!     <https://github.com/nodejs/node-gyp/issues> npm ERR! Build failed with error code: 7  npm ERR! A complete log of this run can be found in: npm ERR!     H:toolsnodejsnode_cache_logs2022-10-09T14_15_40_435Z-debug-0.log 

查看错误，ERR最早出现仍然是node-sass，猜测仍然是node版本不匹配导致。

3.单独安装node-sass

在网上查询到可以通过单独安装node-sass解决问题，于是单独安装node-sass，如下：

npm install -s node-sass@4.14.1  

可以安装node-sass，无错误输出。

运行程序npm run dev，出现下面问题：

I:fontend2mango-ui>npm run dev  > mango-ui@1.0.0 dev > webpack-dev-server --inline --progress --config build/webpack.dev.conf.js 'webpack-dev-server' 不是内部或外部命令，也不是可运行的程序或批处理文件。 

再次运行npm install --save --legacy-peer-deps，错误依旧。

4.修改package.json，增加 "node": "^13.14.0"

在网上查询了好久都找不到解决方法，考虑到错误原因是node版本升级问题。于是自己尝试将"node": "^13.14.0"添加到package.json中"devDependencies"项下。

"devDependencies": {   "autoprefixer": "^7.1.2",   "babel-core": "^6.22.1",   "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": "^3.5.0",   "babel-preset-env": "^1.3.2",   "babel-preset-stage-2": "^6.22.0",   "chalk": "^2.0.1",   "copy-webpack-plugin": "^4.0.1",   "css-loader": "^0.28.0",   "extract-text-webpack-plugin": "^1.0.1",   "file-loader": "^1.1.4",   "friendly-errors-webpack-plugin": "^1.6.1",   "html-webpack-plugin": "^2.30.1",   "mockjs": "^1.0.1-beta3",   "node": "^13.14.0",   "node-notifier": "^5.1.2",   "node-sass": "^4.14.1",   "optimize-css-assets-webpack-plugin": "^3.2.0",   "ora": "^1.2.0",   "portfinder": "^1.0.13",   "postcss-import": "^11.0.0",   "postcss-loader": "^2.0.8",   "postcss-url": "^7.2.1",   "rimraf": "^2.6.0",   "sass-loader": "^7.3.1",   "semver": "^5.3.0",   "shelljs": "^0.7.6",   "style-loader": "^3.1.0",   "uglifyjs-webpack-plugin": "^1.1.1",   "url-loader": "^4.1.1",   "vue-loader": "^13.3.0",   "vue-style-loader": "^3.0.1",   "vue-template-compiler": "^2.5.2",   "webpack": "^3.6.0",   "webpack-bundle-analyzer": "^2.9.0",   "webpack-dev-server": "^2.9.1",   "webpack-merge": "^4.1.0" }, 

再次运行npm install --save --legacy-peer-deps，无错误，且node_modules中会下载node13.14.0.exe。

运行npm run dev，程序正常运行，如下：

I:fontend2mango-ui>npm run dev > mango-ui@1.0.0 dev > webpack-dev-server --inline --progress --config build/webpack.dev.conf.js  95% emitting                                                                             DONE  Compiled successfully in 18305ms                                                                                                                   下午10:43:07  I  Your application is running here: http://localhost:8080 

5. node与node-sass版本不匹配解决方法

经反复测试，当出现node版本不匹配问题时，可通过以下方法解决：

1. 删除旧的"node_modules"文件夹； 2. 修改"package.json"，在"devDependencies"中增加"node": "^13.14.0"依赖； 3. npm install -s node-sass@4.14.1; 4. npm install --save --legacy-peer-deps; 5. npm run dev