fix: migrate prettier auto endofline to LF as it's the default

[eMerzh]

Summary

I tried to migrate from prettier, and the migration failed because of unsupported option

#2138

Test Plan

you can migrate a prettierrc like this

{
	"printWidth": 120,
	"useTabs": true,
	"tabWidth": 2,
	"singleQuote": true,
	"semi": false,
	"trailingComma": "all",
	"bracketSameLine": false,
	"arrowParens": "avoid",
	"endOfLine": "auto"
}

I KNOW that auto won't be supported, but i think it's better for the UX to continue the flow with the best option possible instead of stopping in error

feel free to close if you disagree

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[arendjr]

I think it’s a sensible approach. Just wondering if we should log a warning. What do you think, @ematipico ?

[ematipico]

Yeah I think we should log a warning at least.

[eMerzh]

hum... as a nooob in rust i'm not really sure how should i do that...
not print like an animal right? I saw the console thingy but unsure how to trickel it down the transmformation 🤔
if someone could give a hint i can do that (or someone push it and i 🤓 )

[ematipico]

@eMerzh I'll give you some pointers soon :)

[ematipico]

Here

biome/crates/biome_cli/src/execute/migrate/prettier.rs

Lines 344 to 346 in 644d2f4

	let prettier_configuration = deserialized.into_deserialized();
	if let Some(prettier_configuration) = prettier_configuration {

You'll have to read the value of prettier_configuration.end_of_line and check it is equals to the new value you added. If so, than you should add something like this:

console.log(markup! {
	<Warn>"Warning message here"</Warn>
});

I leave the contents of the message to you

[eMerzh]

oh ok, as simple... :)
thanks for the help 🙌 ... i pushed an attempt then :)

[Sec-ant]

LGTM. Thank you! Do you mind adding a changelog entry? You can check the instructions in CONTRIBUTING.md.

[Sec-ant]

You'll also have to run just gen-web afterwards so the changelog file on website can be updated as well. :)

[eMerzh]

aaarg ...omg sorry sorry 😅

[Sec-ant]

aaarg ...omg sorry sorry 😅

No worries! I tweaked a few places and added a test. Hope you don't mind.