Ionic 2 - 使用npm install安装node_modules时出错？

I've installed latest Node JS ( v 8.1.0 ), Ionic and Cordova then tried to install node_modules using npm install command in ionic demo tab project created using ionic start myApp tabs and I got the following error. I'm using Windows 10 Pro. I have tried lot but yet to resolve the worry. any help would be greatly appreciated.

我安装了最新的Node JS（v 8.1.0），Ionic和Cordova，然后尝试使用离子启动myApp选项卡创建的离子演示选项卡项目中的npm install命令安装node_modules，我收到以下错误。我正在使用Windows 10 Pro。我已经尝试了很多，但还没有解决这个问题。任何帮助将不胜感激。

npm install
✖ Running command - failed!
[ERROR] An error occurred while running npm install (exit code 1):

        npm WARN prefer global node-gyp@3.6.2 should be installed with -g

        > node-sass@4.5.0 install E:\Hybrid Project Locker\NFB\node_modules\node-sass
        > node scripts/install.js

        Downloading binary from https://github.com/sass/node-sass/releases/download/v4.5.0/win32-x64-57_binding.node
        Cannot download "https://github.com/sass/node-sass/releases/download/v4.5.0/win32-x64-57_binding.node":

        HTTP error 404 Not Found

        Hint: If github.com is not accessible in your location
              try setting a proxy via HTTP_PROXY, e.g.

              export HTTP_PROXY=http://example.com:1234

        or configure npm proxy via

              npm config set proxy http://example.com:8080

        > fsevents@1.1.1 install E:\Hybrid Project Locker\NFB\node_modules\fsevents
        > node install


        > node-sass@4.5.0 postinstall E:\Hybrid Project Locker\NFB\node_modules\node-sass
        > node scripts/build.js

        Building: C:\Program Files\nodejs\node.exe E:\Hybrid Project Locker\NFB\node_modules\node-gyp\bin\node-gyp.js rebuild --verbose --libsass_ext= --libsass_cflags= --libsass_ldf
lags= --libsass_library=
        gyp info it worked if it ends with ok
        gyp verb cli [ 'C:\\Program Files\\nodejs\\node.exe',
        gyp verb cli   'E:\\Hybrid Project Locker\\NFB\\node_modules\\node-gyp\\bin\\node-gyp.js',
        gyp verb cli   'rebuild',
        gyp verb cli   '--verbose',
        gyp verb cli   '--libsass_ext=',
        gyp verb cli   '--libsass_cflags=',
        gyp verb cli   '--libsass_ldflags=',
        gyp verb cli   '--libsass_library=' ]
        gyp info using node-gyp@3.6.2
        gyp info using node@8.1.0 | win32 | x64
        gyp verb command rebuild []
        gyp verb command clean []
        gyp verb clean removing "build" directory
        gyp verb command configure []
        gyp verb check python checking for Python executable "python2" in the PATH
        gyp verb `which` failed Error: not found: python2
        gyp verb `which` failed     at getNotFoundError (E:\Hybrid Project Locker\NFB\node_modules\which\which.js:13:12)
        gyp verb `which` failed     at F (E:\Hybrid Project Locker\NFB\node_modules\which\which.js:68:19)
        gyp verb `which` failed     at E (E:\Hybrid Project Locker\NFB\node_modules\which\which.js:80:29)
        gyp verb `which` failed     at E:\Hybrid Project Locker\NFB\node_modules\which\which.js:89:16
        gyp verb `which` failed     at E:\Hybrid Project Locker\NFB\node_modules\isexe\index.js:42:5
        gyp verb `which` failed     at E:\Hybrid Project Locker\NFB\node_modules\isexe\windows.js:36:5
        gyp verb `which` failed     at FSReqWrap.oncomplete (fs.js:152:21)
        gyp verb `which` failed  python2 { Error: not found: python2
        gyp verb `which` failed     at getNotFoundError (E:\Hybrid Project Locker\NFB\node_modules\which\which.js:13:12)
        gyp verb `which` failed     at F (E:\Hybrid Project Locker\NFB\node_modules\which\which.js:68:19)
        gyp verb `which` failed     at E (E:\Hybrid Project Locker\NFB\node_modules\which\which.js:80:29)
        gyp verb `which` failed     at E:\Hybrid Project Locker\NFB\node_modules\which\which.js:89:16
        gyp verb `which` failed     at E:\Hybrid Project Locker\NFB\node_modules\isexe\index.js:42:5
        gyp verb `which` failed     at E:\Hybrid Project Locker\NFB\node_modules\isexe\windows.js:36:5
        gyp verb `which` failed     at FSReqWrap.oncomplete (fs.js:152:21) code: 'ENOENT' }
        gyp verb check python checking for Python executable "python" in the PATH
        gyp verb `which` failed Error: not found: python
        gyp verb `which` failed     at getNotFoundError (E:\Hybrid Project Locker\NFB\node_modules\which\which.js:13:12)
        gyp verb `which` failed     at F (E:\Hybrid Project Locker\NFB\node_modules\which\which.js:68:19)
        gyp verb `which` failed     at E (E:\Hybrid Project Locker\NFB\node_modules\which\which.js:80:29)
        gyp verb `which` failed     at E:\Hybrid Project Locker\NFB\node_modules\which\which.js:89:16
        gyp verb `which` failed     at E:\Hybrid Project Locker\NFB\node_modules\isexe\index.js:42:5
        gyp verb `which` failed     at E:\Hybrid Project Locker\NFB\node_modules\isexe\windows.js:36:5
        gyp verb `which` failed     at FSReqWrap.oncomplete (fs.js:152:21)
        gyp verb `which` failed  python { Error: not found: python
        gyp verb `which` failed     at getNotFoundError (E:\Hybrid Project Locker\NFB\node_modules\which\which.js:13:12)
        gyp verb `which` failed     at F (E:\Hybrid Project Locker\NFB\node_modules\which\which.js:68:19)
        gyp verb `which` failed     at E (E:\Hybrid Project Locker\NFB\node_modules\which\which.js:80:29)
        gyp verb `which` failed     at E:\Hybrid Project Locker\NFB\node_modules\which\which.js:89:16
        gyp verb `which` failed     at E:\Hybrid Project Locker\NFB\node_modules\isexe\index.js:42:5
        gyp verb `which` failed     at E:\Hybrid Project Locker\NFB\node_modules\isexe\windows.js:36:5
        gyp verb `which` failed     at FSReqWrap.oncomplete (fs.js:152:21) code: 'ENOENT' }
        gyp verb could not find "python". checking python launcher
        gyp verb could not find "python". guessing location
        gyp verb ensuring that file exists: C:\Python27\python.exe
        gyp ERR! configure error
        gyp ERR! stack Error: Can't find Python executable "python", you can set the PYTHON env variable.
        gyp ERR! stack     at PythonFinder.failNoPython (E:\Hybrid Project Locker\NFB\node_modules\node-gyp\lib\configure.js:483:19)
        gyp ERR! stack     at PythonFinder.<anonymous> (E:\Hybrid Project Locker\NFB\node_modules\node-gyp\lib\configure.js:508:16)
        gyp ERR! stack     at E:\Hybrid Project Locker\NFB\node_modules\graceful-fs\polyfills.js:284:29
        gyp ERR! stack     at FSReqWrap.oncomplete (fs.js:152:21)
        gyp ERR! System Windows_NT 10.0.10586
        gyp ERR! command "C:\\Program Files\\nodejs\\node.exe" "E:\\Hybrid Project Locker\\NFB\\node_modules\\node-gyp\\bin\\node-gyp.js" "rebuild" "--verbose" "--libsass_ext=" "--li
bsass_cflags=" "--libsass_ldflags=" "--libsass_library="
        gyp ERR! cwd E:\Hybrid Project Locker\NFB\node_modules\node-sass
        gyp ERR! node -v v8.1.0
        gyp ERR! node-gyp -v v3.6.2
        gyp ERR! not ok
        Build failed with error code: 1
        npm WARN @angular/http@2.4.10 requires a peer of @angular/platform-browser@2.4.10 but none was installed.
        npm WARN @ionic/cli-plugin-ionic-angular@1.3.0 requires a peer of @ionic/app-scripts@^1.3.7 but none was installed.
        npm WARN cordova-ios@4.4.0 had bundled packages that do not match the required version(s). They have been replaced with non-bundled versions.

        npm ERR! code ELIFECYCLE
        npm ERR! errno 1
        npm ERR! node-sass@4.5.0 postinstall: `node scripts/build.js`
        npm ERR! Exit status 1
        npm ERR!
        npm ERR! Failed at the node-sass@4.5.0 postinstall script.
        npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

        npm ERR! A complete log of this run can be found in:
        npm ERR!     C:\Users\Anoop M\AppData\Roaming\npm-cache\_logs\2017-06-10T00_37_25_356Z-debug.log

4 个解决方案

#1

Try with Node.js v6 and it should work. This is because Node Sass v4.5.0 doesn't support Node.js v8

尝试使用Node.js v6，它应该工作。这是因为Node Sass v4.5.0不支持Node.js v8

You can check the supported environments for Node Sass v4.5.0 here: https://github.com/sass/node-sass/releases/tag/v4.5.0

您可以在此处查看Node Sass v4.5.0支持的环境：https：//github.com/sass/node-sass/releases/tag/v4.5.0

#2

Change to node-sass 4.5.3 as it fixed error installation on node 8 https://github.com/sass/node-sass/releases

更改为node-sass 4.5.3，因为它修复了节点8上的错误安装https://github.com/sass/node-sass/releases

#3

Remove the (webpack, sass-loader/less-loader and node-sass) entry in package.json.
删除package.json中的（webpack，sass-loader / less-loader和node-sass）条目。
Delete the node_modules folder
删除node_modules文件夹
install with "npm install sass-loader node-sass webpack".
使用“npm install sass-loader node-sass webpack”安装。

This worked for me.

这对我有用。

#4

Try to run this command:

尝试运行此命令：

npm install --unsafe-perm node-sass

#1