Add new option classnamesPrintWidth

[ony3000]

This PR closes #96.

What option is this?

This option specifies the print width of the class name. It can be used to branch the print width of class names and the print width of other code.

What options are available?

You can specify an integer value. If no value is provided, the printWidth value is used as default.

[Copilot]

Pull request overview

This PR adds a new Prettier-plugin option (classnamesPrintWidth) to control wrapping width for class name formatting independently of Prettier’s global printWidth, addressing #96.

Changes:

• Introduce the classnamesPrintWidth option in the plugin’s option schema, types, and README docs.
• Update the core formatter to prefer classnamesPrintWidth (when provided) over printWidth for class name wrapping calculations.
• Add snapshot test coverage across supported parsers (absolute/relative ending position modes) to validate the new behavior.

Reviewed changes

Copilot reviewed 68 out of 69 changed files in this pull request and generated 13 comments.

Show a summary per file

File	Description
src/options.ts	Declares the new classnamesPrintWidth plugin option.
src/core-parts/processor.ts	Uses classnamesPrintWidth ?? printWidth when wrapping class name tokens.
global.d.ts	Extends ThisPluginOptions with classnamesPrintWidth?: number.
README.md	Documents the new option and its CLI/API overrides.
tests/vue/classnames-print-width/relative.test.ts	Adds Vue snapshot test runner (relative).
tests/vue/classnames-print-width/absolute.test.ts	Adds Vue snapshot test runner (absolute).
tests/vue/classnames-print-width/fixtures.ts	Vue fixtures covering default/shorter/longer classnames print width cases.
tests/vue/classnames-print-width/snapshots/relative.test.ts.snap	Vue expected output snapshots (relative).
tests/vue/classnames-print-width/snapshots/absolute.test.ts.snap	Vue expected output snapshots (absolute).
tests/typescript/classnames-print-width/relative.test.ts	Adds TS snapshot test runner (relative).
tests/typescript/classnames-print-width/absolute.test.ts	Adds TS snapshot test runner (absolute).
tests/typescript/classnames-print-width/fixtures.ts	TS fixtures for classnamesPrintWidth.
tests/typescript/classnames-print-width/snapshots/relative.test.ts.snap	TS expected output snapshots (relative).
tests/typescript/classnames-print-width/snapshots/absolute.test.ts.snap	TS expected output snapshots (absolute).
tests/svelte/classnames-print-width/relative.test.ts	Adds Svelte snapshot test runner (relative).
tests/svelte/classnames-print-width/absolute.test.ts	Adds Svelte snapshot test runner (absolute).
tests/svelte/classnames-print-width/fixtures.ts	Svelte fixtures for classnamesPrintWidth.
tests/svelte/classnames-print-width/snapshots/relative.test.ts.snap	Svelte expected output snapshots (relative).
tests/svelte/classnames-print-width/snapshots/absolute.test.ts.snap	Svelte expected output snapshots (absolute).
tests/scss/classnames-print-width/relative.test.ts	Adds SCSS snapshot test runner (relative).
tests/scss/classnames-print-width/absolute.test.ts	Adds SCSS snapshot test runner (absolute).
tests/scss/classnames-print-width/fixtures.ts	SCSS fixtures for classnamesPrintWidth.
tests/scss/classnames-print-width/snapshots/relative.test.ts.snap	SCSS expected output snapshots (relative).
tests/scss/classnames-print-width/snapshots/absolute.test.ts.snap	SCSS expected output snapshots (absolute).
tests/oxc/classnames-print-width/relative.test.ts	Adds OXC snapshot test runner (relative).
tests/oxc/classnames-print-width/absolute.test.ts	Adds OXC snapshot test runner (absolute).
tests/oxc/classnames-print-width/fixtures.ts	OXC fixtures for classnamesPrintWidth.
tests/oxc/classnames-print-width/snapshots/relative.test.ts.snap	OXC expected output snapshots (relative).
tests/oxc/classnames-print-width/snapshots/absolute.test.ts.snap	OXC expected output snapshots (absolute).
tests/oxc-ts/classnames-print-width/relative.test.ts	Adds OXC-TS snapshot test runner (relative).
tests/oxc-ts/classnames-print-width/absolute.test.ts	Adds OXC-TS snapshot test runner (absolute).
tests/oxc-ts/classnames-print-width/fixtures.ts	OXC-TS fixtures for classnamesPrintWidth.
tests/oxc-ts/classnames-print-width/snapshots/relative.test.ts.snap	OXC-TS expected output snapshots (relative).
tests/oxc-ts/classnames-print-width/snapshots/absolute.test.ts.snap	OXC-TS expected output snapshots (absolute).
tests/less/classnames-print-width/relative.test.ts	Adds Less snapshot test runner (relative).
tests/less/classnames-print-width/absolute.test.ts	Adds Less snapshot test runner (absolute).
tests/less/classnames-print-width/fixtures.ts	Less fixtures for classnamesPrintWidth.
tests/less/classnames-print-width/snapshots/relative.test.ts.snap	Less expected output snapshots (relative).
tests/less/classnames-print-width/snapshots/absolute.test.ts.snap	Less expected output snapshots (absolute).
tests/html/classnames-print-width/relative.test.ts	Adds HTML snapshot test runner (relative).
tests/html/classnames-print-width/absolute.test.ts	Adds HTML snapshot test runner (absolute).
tests/html/classnames-print-width/fixtures.ts	HTML fixtures for classnamesPrintWidth.
tests/html/classnames-print-width/snapshots/relative.test.ts.snap	HTML expected output snapshots (relative).
tests/html/classnames-print-width/snapshots/absolute.test.ts.snap	HTML expected output snapshots (absolute).
tests/css/classnames-print-width/relative.test.ts	Adds CSS snapshot test runner (relative).
tests/css/classnames-print-width/absolute.test.ts	Adds CSS snapshot test runner (absolute).
tests/css/classnames-print-width/fixtures.ts	CSS fixtures for classnamesPrintWidth.
tests/css/classnames-print-width/snapshots/relative.test.ts.snap	CSS expected output snapshots (relative).
tests/css/classnames-print-width/snapshots/absolute.test.ts.snap	CSS expected output snapshots (absolute).
tests/babel/classnames-print-width/relative.test.ts	Adds Babel snapshot test runner (relative).
tests/babel/classnames-print-width/absolute.test.ts	Adds Babel snapshot test runner (absolute).
tests/babel/classnames-print-width/fixtures.ts	Babel fixtures for classnamesPrintWidth.
tests/babel/classnames-print-width/snapshots/relative.test.ts.snap	Babel expected output snapshots (relative).
tests/babel/classnames-print-width/snapshots/absolute.test.ts.snap	Babel expected output snapshots (absolute).
tests/babel-ts/classnames-print-width/relative.test.ts	Adds Babel-TS snapshot test runner (relative).
tests/babel-ts/classnames-print-width/absolute.test.ts	Adds Babel-TS snapshot test runner (absolute).
tests/babel-ts/classnames-print-width/fixtures.ts	Babel-TS fixtures for classnamesPrintWidth.
tests/babel-ts/classnames-print-width/snapshots/relative.test.ts.snap	Babel-TS expected output snapshots (relative).
tests/babel-ts/classnames-print-width/snapshots/absolute.test.ts.snap	Babel-TS expected output snapshots (absolute).
tests/astro/classnames-print-width/relative.test.ts	Adds Astro snapshot test runner (relative).
tests/astro/classnames-print-width/absolute.test.ts	Adds Astro snapshot test runner (absolute).
tests/astro/classnames-print-width/fixtures.ts	Astro fixtures for classnamesPrintWidth.
tests/astro/classnames-print-width/snapshots/relative.test.ts.snap	Astro expected output snapshots (relative).
tests/astro/classnames-print-width/snapshots/absolute.test.ts.snap	Astro expected output snapshots (absolute).
tests/angular/classnames-print-width/relative.test.ts	Adds Angular snapshot test runner (relative).
tests/angular/classnames-print-width/absolute.test.ts	Adds Angular snapshot test runner (absolute).
tests/angular/classnames-print-width/fixtures.ts	Angular fixtures for classnamesPrintWidth.
tests/angular/classnames-print-width/snapshots/relative.test.ts.snap	Angular expected output snapshots (relative).
tests/angular/classnames-print-width/snapshots/absolute.test.ts.snap	Angular expected output snapshots (absolute).

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