Upgrade eslint

package.json

@@ -105,16 +105,16 @@
     "@sveltejs/eslint-config": "github:sveltejs/eslint-config#v5.6.0",
     "@types/mocha": "^7.0.0",
     "@types/node": "^8.10.53",
-    "@typescript-eslint/eslint-plugin": "^3.0.2",
-    "@typescript-eslint/parser": "^3.0.2",
+    "@typescript-eslint/eslint-plugin": "^4.9.0",
+    "@typescript-eslint/parser": "^4.9.0",
     "acorn": "^7.4.0",
     "agadoo": "^1.1.0",
     "c8": "^5.0.1",
     "code-red": "^0.1.4",
     "codecov": "^3.5.0",
     "css-tree": "1.0.0-alpha22",
-    "eslint": "^7.1.0",
-    "eslint-plugin-import": "^2.20.2",
+    "eslint": "^7.15.0",
+    "eslint-plugin-import": "^2.22.1",
     "eslint-plugin-svelte3": "^2.7.3",
     "estree-walker": "^1.0.0",
     "is-reference": "^1.1.4",

src/runtime/internal/dev.ts

@@ -150,7 +150,7 @@ export class SvelteComponentDev extends SvelteComponent {
 export interface SvelteComponentTyped<
 	Props extends Record<string, any> = any,
 	Events extends Record<string, any> = any,
-	Slots extends Record<string, any> = any
+	Slots extends Record<string, any> = any // eslint-disable-line @typescript-eslint/no-unused-vars
 > {
 	$set(props?: Partial<Props>): void;
 	$on<K extends Extract<keyof Events, string>>(type: K, callback: (e: Events[K]) => void): () => void;