fix(prefer-const): allow ESLint core rule's properties

Author: baseballyama

.changeset/good-carrots-notice.md

@@ -0,0 +1,5 @@
+---
+'eslint-plugin-svelte': patch
+---
+
+fix(prefer-const): allow ESLint core rule's properties

packages/eslint-plugin-svelte/src/rule-types.ts

@@ -570,9 +570,8 @@ type SveltePreferClassDirective = []|[{
 }]
 // ----- svelte/prefer-const -----
 type SveltePreferConst = []|[{
-  destructuring?: ("any" | "all")
-  ignoreReadBeforeAssign?: boolean
   excludedRunes?: string[]
+  [k: string]: unknown | undefined
 }]
 // ----- svelte/require-event-prefix -----
 type SvelteRequireEventPrefix = []|[{

packages/eslint-plugin-svelte/src/rules/prefer-const.ts

@@ -59,16 +59,15 @@ export default createRule('prefer-const', {
 			{
 				type: 'object',
 				properties: {
-					destructuring: { enum: ['any', 'all'] },
-					ignoreReadBeforeAssign: { type: 'boolean' },
 					excludedRunes: {
 						type: 'array',
 						items: {
 							type: 'string'
 						}
 					}
 				},
-				additionalProperties: false
+				// allow ESLint core rule's properties
+				additionalProperties: true
 			}
 		]
 	},

packages/eslint-plugin-svelte/tests/fixtures/rules/prefer-const/valid/1238/_config.json

@@ -0,0 +1,8 @@
+{
+	"options": [
+		{
+			"destructuring": "all",
+			"ignoreReadonly": true
+		}
+	]
+}

packages/eslint-plugin-svelte/tests/fixtures/rules/prefer-const/valid/1238/input.svelte

@@ -0,0 +1 @@
+123