Warning for trailing spaces in folder names

[joshuaobritsch]

Issue Type: Feature Request

My colleague and I had an insanely embarassing and unforgetable experience today at work due to the lack of a feature involving trailing spaces in folder names.

I was teaching my colleague how to use Redux with React Native when we got an error in the console. Something along the lines: "Could not resolve module reducers. Path ./reducers not found."

I had encountered this issue many times before with previous versions of Expo in which the Metro Bundler cache would not update correctly and it would not recognize the creation of a new folder. I believed the problem to be related to the cache and my colleague and I spent half a day researching the issue on Google and StackOverflow.

Eventually, we realized that my colleague had accidentally included a space at the end of the folder name as follows: "reducers ". Not in the import statement, however.

There should undoubtedly be a feature in VSCode that enables a warning message by default for trailing spaces in both folder and file names.

Though I will admit, the laugh we got out of this was well worth the loss of time.

VS Code version: Code - OSS 1.30.2 (61122f8, 2019-01-08T23:10:56.746Z)
OS version: Linux x64 4.20.6-arch1-1-ARCH

[g1tup]

VS Code Explorer allows folder names illegal in Windows

Had the same issue with a folder name like "Scan 09.04." And subsequently found this:

"Do not end a file or directory name with a space or a period. Although the underlying file system may support such names, the Windows shell and user interface does not."

https://docs.microsoft.com/en-us/windows/desktop/fileio/naming-a-file#file-and-directory-names

For better illustration I reproduced this behavior and provide two screenshots:

Please escalate this issue as it is difficult - if not impossible - to get rid of these useless folders.

Thank you :-)