seems library are missing when install npm

[Jorgininho]

hello, I followed your tutorial on flux on the todo list.
at step "3. Setting up Flux" when I modify the root.js, i get the following issue :

ERROR in /home/jubo/infini-fab/web/test/flux/utils.js
Module not found: Error: Cannot resolve 'file' or 'directory' ./lib/FluxContainer in /home/jubo/infini-fab/web/test/flux
@ /home/jubo/infini-fab/web/test/flux/utils.js 10:27-57

ERROR in /home/jubo/infini-fab/web/test/flux/utils.js
Module not found: Error: Cannot resolve 'file' or 'directory' ./lib/FluxMixinLegacy in /home/jubo/infini-fab/web/test/flux
@ /home/jubo/infini-fab/web/test/flux/utils.js 11:23-55

ERROR in /home/jubo/infini-fab/web/test/flux/utils.js
Module not found: Error: Cannot resolve 'file' or 'directory' ./lib/FluxReduceStore in /home/jubo/infini-fab/web/test/flux
@ /home/jubo/infini-fab/web/test/flux/utils.js 12:29-61

ERROR in /home/jubo/infini-fab/web/test/flux/utils.js
Module not found: Error: Cannot resolve 'file' or 'directory' ./lib/FluxStore in /home/jubo/infini-fab/web/test/flux
@ /home/jubo/infini-fab/web/test/flux/utils.js 13:23-49

ERROR in /home/jubo/infini-fab/web/test/flux/index.js
Module not found: Error: Cannot resolve 'file' or 'directory' ./lib/Dispatcher in /home/jubo/infini-fab/web/test/flux
@ /home/jubo/infini-fab/web/test/flux/index.js 10:28-55

there no folder "lib" created during the install. Here are the warning I have during the npm install :

npm WARN prepublish-on-install As of npm@5, prepublish scripts are deprecated.
npm WARN prepublish-on-install Use prepare for build steps and prepublishOnly for upload-only.
npm WARN prepublish-on-install See the deprecation note in npm help scripts for more information.
npm WARN lifecycle flux@3.1.3~prepublish: cannot run in wd %s %s (wd=%s) flux@3.1.3 gulp publish /home/jubo/infini-fab/web/test/flux
npm WARN babelify@8.0.0 requires a peer of babel-core@6 || 7 || ^7.0.0-alpha || ^7.0.0-beta || ^7.0.0-rc but none is installed. You must install peer dependencies yourself.
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: fsevents@1.1.3 (node_modules/fsevents):
npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for fsevents@1.1.3: wanted {"os":"darwin","arch":"any"} (current: {"os":"linux","arch":"x64"})

added 116 packages in 14.406s

My OS : Ubuntu 16.04
node : v 8.9.1
npm : v 5.5.1

Thanks

[hopeseekr]

I'm having this exact same problem!

[hopeseekr]

Here's my fix for this issue:

https://stackoverflow.com/a/47427544/430062

[m2art]

Solve problem this code:
npm install --no-optional

Check this link:
npm/npm#11632
https://stackoverflow.com/questions/46929196/how-to-solve-npm-install-throwing-fsevents-warning-on-non-mac-os

[evergreenx]

ok