"npm install" failed in Windows and Ubuntu

[K69G4JRA725W]

Can you make a version that runs in Windows and Ubuntu, please?
Here is the error message.

.7924 warn sass-loader@6.0.3 requires a peer of webpack@^2.0.0 but none was installed.
7925 verbose If you need help, you may report this error at:
7925 verbose https://github.com/npm/npm/issues
7926 warn Error: EPERM: operation not permitted, lstat 'D:\castle\CoPilot-master\node_modules\yargs-parser\node_modules'
7926 warn { Error: EPERM: operation not permitted, lstat 'D:\castle\CoPilot-master\node_modules\yargs-parser\node_modules'
7926 warn errno: -4048,
7926 warn code: 'EPERM',
7926 warn syscall: 'lstat',
7926 warn path: 'D:\castle\CoPilot-master\node_modules\yargs-parser\node_modules' }
7927 verbose Please try running this command again as root/Administrator.
7928 verbose stack Error: node-sass@4.5.2 postinstall: node scripts/build.js
7928 verbose stack Exit status 1
7928 verbose stack at EventEmitter. (D:\applications\node-v7.7.3-win-x64\node_modules\npm\lib\utils\lifecycle.js:279:16)
7928 verbose stack at emitTwo (events.js:106:13)
7928 verbose stack at EventEmitter.emit (events.js:194:7)
7928 verbose stack at ChildProcess. (D:\applications\node-v7.7.3-win-x64\node_modules\npm\lib\utils\spawn.js:40:14)
7928 verbose stack at emitTwo (events.js:106:13)
7928 verbose stack at ChildProcess.emit (events.js:194:7)
7928 verbose stack at maybeClose (internal/child_process.js:899:16)
7928 verbose stack at Process.ChildProcess._handle.onexit (internal/child_process.js:226:5)
7929 verbose pkgid node-sass@4.5.2
7930 verbose cwd D:\castle\CoPilot-master
7931 error Windows_NT 6.1.7601
7932 error argv "D:\applications\node-v7.7.3-win-x64\node.exe" "D:\applications\node-v7.7.3-win-x64\node_modules\npm\bin\npm-cli.js" "install"
7933 error node v7.7.3
7934 error npm v4.1.2
7935 error code ELIFECYCLE
7936 error node-sass@4.5.2 postinstall: node scripts/build.js
7936 error Exit status 1
7937 error Failed at the node-sass@4.5.2 postinstall script 'node scripts/build.js'.
7937 error Make sure you have the latest version of node.js and npm installed.
7937 error If you do, this is most likely a problem with the node-sass package,
7937 error not with npm itself.
7937 error Tell the author that this fails on your system:
7937 error node scripts/build.js
7937 error You can get information on how to open an issue for this project with:
7937 error npm bugs node-sass
7937 error Or if that isn't available, you can get their info via:
7937 error npm owner ls node-sass
7937 error There is likely additional logging output above.
7938 verbose exit [ 1, true ]

[euvl]

7926 warn Error: EPERM: operation not permitted, lstat 'D:\castle\CoPilot-master\node_modules\yargs-parser\node_modules'
7926 warn { Error: EPERM: operation not permitted, lstat 'D:\castle\CoPilot-master\node_modules\yargs-parser\node_modules'

7927 verbose Please try running this command again as root/Administrator.

you need to run your npm install as root/admin

edit:

..or sort out access rights to your global and private node_modules folder(s),