chore: add linebreak-style rule

Author: Christopher Quadflieg

.eslintrc.js

@@ -97,6 +97,7 @@ module.exports = defineConfig({
           'greasemonkey',
           'jsdoc',
           'jsx',
+          'linebreak',
           'loc',
           'multiline',
           'nashorn',
@@ -108,6 +109,7 @@ module.exports = defineConfig({
           'sharedmemory',
           'tsconfig',
           'typedarrays',
+          'unix',
           'webextensions',
           'webworker',
           'wellknown',

src/rules/eslint/index.d.ts

@@ -1,10 +1,11 @@
 import type { CommaDangleRule } from './comma-dangle';
 import type { CurlyRule } from './curly';
+import type { LinebreakStyleRule } from './linebreak-style';
 import type { NoDebuggerRule } from './no-debugger';
 import type { QuotesRule } from './quotes';
 import type { SemiRule } from './semi';
 
 /**
  * All eslint rules.
  */
-export type EslintRules = CommaDangleRule & CurlyRule & NoDebuggerRule & QuotesRule & SemiRule;
+export type EslintRules = CommaDangleRule & CurlyRule & LinebreakStyleRule & NoDebuggerRule & QuotesRule & SemiRule;

src/rules/eslint/linebreak-style.d.ts

@@ -0,0 +1,32 @@
+import type { RuleConfig } from '../rule-config';
+
+/**
+ * Option.
+ */
+export type LinebreakStyleOption = 'unix' | 'windows';
+
+/**
+ * Options.
+ */
+export type LinebreakStyleOptions = [LinebreakStyleOption?];
+
+/**
+ * Enforce consistent linebreak style.
+ *
+ * @see [linebreak-style](https://eslint.org/docs/rules/linebreak-style)
+ */
+export type LinebreakStyleRuleConfig = RuleConfig<LinebreakStyleOptions>;
+
+/**
+ * Enforce consistent linebreak style.
+ *
+ * @see [linebreak-style](https://eslint.org/docs/rules/linebreak-style)
+ */
+export interface LinebreakStyleRule {
+  /**
+   * Enforce consistent linebreak style.
+   *
+   * @see [linebreak-style](https://eslint.org/docs/rules/linebreak-style)
+   */
+  'linebreak-style': LinebreakStyleRuleConfig;
+}