Add transform feature (enabled only on files)

[CPatchane]

Add the transform option allowing to transform the file content (buffer) before being copied (behave similarly to webpack-copy-plugin). Also, it warns if the function is run on a directory.

• Tests
• Linting
• Documentation

Fix #21 ?

[codecov]

Codecov Report

Merging #31 into master will not change coverage.
The diff coverage is 100%.

@@          Coverage Diff          @@
##           master    #31   +/-   ##
=====================================
  Coverage     100%   100%           
=====================================
  Files           1      1           
  Lines          37     50   +13     
  Branches       13     17    +4     
=====================================
+ Hits           37     50   +13

Impacted Files	Coverage Δ
src/index.js	100% <100%> (ø)	⬆️

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[CPatchane]

Any news @vladshcherbin 🙏 ?

[CPatchane]

Any update @vladshcherbin 🙏 ?

[CPatchane]

@vladshcherbin I rebased the this PR on master, and pass the transform prop using the same way as rename and flatten to the generateCopyTarget helper.
Still waiting this to be released (I am currently using a custom git branch to use that missing feature :/)

[vladshcherbin]

@CPatchane I've also rebased locally, will hopefully release today 😉

[vladshcherbin]

@CPatchane Thank you ❤️

Released in 3.3.0

[gerwinbrunner]

@CPatchane @vladshcherbin
Would it be possible to add the filename to the transform function call and not only the content itself?

[vladshcherbin]

@gerwinbrunner hey, I've added filename to transform function in 3.4.0 for you 😉