fix(39332): QuoteStyle not respected for string literal types in implement interface

[a-tarasyuk]

Fixes #39332

[minestarks]

@jessetrinity could you review please?

[jessetrinity]

Should it respect "auto" quotePreference? It does seem unfortunate that we use the same quotePreference everywhere but the auto behavior is only determined from pre-existing imports.

[a-tarasyuk]

@jessetrinity Good question. Which result should be generated for the following code with the auto option?

interface I {
   a(): void;
   b(x: 'x', y: 'a' | 'b'): 'b';

   c: 'c';
   d: { e: 'e'; };
}

class Foo/**/ implements I {
}

[jessetrinity]

@a-tarasyuk If auto were respected I would expect the output to be based on the first use of quotes in an interface member. In this example, single quotes since you have b(x: 'x', y: 'a' | 'b'): 'b';, or double quotes if it were instead b(x: "x", y: "a" | "b"): "b";.

I'm not sure if that decision makes sense though since I think auto might only apply to imports?

[a-tarasyuk]

@jessetrinity Do you mean we need to find the use of the first line in the file to determine the quotePreference before generating the code?

[jessetrinity]

@a-tarasyuk that is the usual way of doing it. I think getQuotePreference in utilities is what you want.

[a-tarasyuk]

@jessetrinity I checked this helper, it seems to detect quotePreference based on imports. If it is ok, I'll use it to get a quote option.

[jessetrinity]

@a-tarasyuk That seems okay. It looks like the setting is worded to only work based on imports in editors anyway.

[a-tarasyuk]

@jessetrinity Ok, changed and added several additional tests for auto option.

[jessetrinity]

Found a typo(?) but otherwise looks great!

[jessetrinity]

I think this commit will fix the eslint failures:
#39450