Blacklist files or code blocks

[isaacabraham]

If one reaches a file that Fantomas can't handle for whatever reason, currently you're just "stuck" (unless you maintain a specific list of "good" files). Is there a way to provide a list of files that fantomas should ignore?

Alternatively, is there perhaps a way that one could have fantomas ignore specific blocks of code in a file?

[prosconi]

Are you thinking of something like a .gitignore ... .fantomasignore?

[jindraivanek]

I think something like

//#FANTOMAS OFF

code block that will be ignored by fantomas

//#FANTOMAS ON

will be good addition.

[nojaf]

I would prefer that the comment marks the entire file as not to be formatted.
Having a mixed model of some blocks formatted and other blocks not will lead to a headache for sure.

[nojaf]

Hi @isaacabraham, we are thinking about introducing a new directive that we always add when we format the code. That way we can ignore the block that negates this directive.

For example:

#if !FANTOMAS
let foo = 42 // Never going to be formatted
#endif

Would such a thing work for you? Then I theory you could have pieces of a file that is not being formatted.

[ErikSchierboom]

I would love to have a .fantomasignore file. It is similar to e.g. how git and prettier work.

[nojaf]

I published a first version with the new .fantomasignore file support: https://www.nuget.org/packages/fantomas-tool/4.1.0-alpha-001
Please give this a spin and let me know if this is workable.
You can find some docs here.