feat: add languageOptions configuration property

Author: pengzhanbo

src/config/LanguageOptions.d.ts

@@ -0,0 +1,15 @@
+export interface LanguageOptions {
+  syntax?: {
+    atRules?: Record<
+      string,
+      {
+        comment?: string
+        prelude?: string
+        descriptors?: Record<string, string>
+      }
+    >
+    cssWideKeywords?: string[]
+    properties?: Record<string, string>
+    types?: Record<string, string>
+  }
+}

src/config/index.d.ts

@@ -1,16 +1,15 @@
-import type { ConfigRuleSettings, CustomSyntax, DisableOptions, Formatter, FormatterType, Rule, Severity } from 'stylelint'
+import type { ConfigRuleSettings, CustomSyntax, DisableOptions, Formatter, FormatterType, Severity } from 'stylelint'
 import type { Rules } from '../rules'
 import type { LiteralUnion } from '../utils'
 import type { KnownCustomSyntax } from './customSyntax'
 import type { KnownExtends } from './extends'
-import type { Plugins } from './plugins'
-
-export interface PluginFunctions {
-  [pluginName: string]: Rule
-}
+import type { LanguageOptions } from './LanguageOptions'
+import type { PluginFunctions, Plugins } from './plugins'
 
 export type Extends = KnownExtends | StylelintConfig
 
+export type DisableSettings = ConfigRuleSettings<boolean, DisableOptions>
+
 /**
  * specify what subset of files to apply a configuration to.
  */
@@ -24,8 +23,6 @@ export interface Override extends Omit<StylelintConfig, 'overrides'> {
   name?: string
 }
 
-export type DisableSettings = ConfigRuleSettings<boolean, DisableOptions>
-
 /**
  * Stylelint configuration
  * @see [Stylelint configuration](https://stylelint.io/user-guide/configure)
@@ -239,6 +236,12 @@ export interface StylelintConfig {
    * @see [computeEditInfo](https://stylelint.io/user-guide/configure#computeeditinfo)
    */
   computeEditInfo?: boolean
+
+  /**
+   * You can customize the syntax to define or extend the syntax for at-rules, properties, types, and CSS-wide keywords.
+   * @see [languageOptions](https://stylelint.io/user-guide/configure#languageoptions)
+   */
+  languageOptions?: LanguageOptions
 }
 
 export { Severity }

src/config/plugins.d.ts

@@ -1,4 +1,4 @@
-import type { Plugin } from 'stylelint'
+import type { Plugin, Rule } from 'stylelint'
 import type { LiteralUnion } from '../utils'
 
 /**
@@ -23,3 +23,7 @@ type KnownPlugins = LiteralUnion<
 >
 
 export type Plugins = KnownPlugins | Plugin | (KnownPlugins | Plugin)[]
+
+export interface PluginFunctions {
+  [pluginName: string]: Rule
+}