chore: migrate to ESLint v9

REUSE.toml

@@ -10,9 +10,3 @@ path = ["package-lock.json", "package.json", "tsconfig.json"]
 precedence = "aggregate"
 SPDX-FileCopyrightText = "2019 Nextcloud GmbH and Nextcloud contributors"
 SPDX-License-Identifier = "GPL-3.0-or-later"
-
-[[annotations]]
-path = [".eslintrc.json"]
-precedence = "aggregate"
-SPDX-FileCopyrightText = "2023 Nextcloud GmbH and Nextcloud contributors"
-SPDX-License-Identifier = "GPL-3.0-or-later"

eslint.config.js

@@ -0,0 +1,9 @@
+/*
+ * SPDX-FileCopyrightText: 2025 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: CC0-1.0
+ */
+
+import { recommendedLibrary } from '@nextcloud/eslint-config'
+import { defineConfig } from 'eslint/config'
+
+export default defineConfig([...recommendedLibrary])

lib/env.d.ts

@@ -4,5 +4,5 @@
  */
 
 declare interface Window {
-    _nc_initial_state?: Map<string, unknown>
+	_nc_initial_state?: Map<string, unknown>
 }

lib/index.ts

@@ -30,7 +30,7 @@ export function loadState<T>(app: string, key: string, fallback?: T): T {
 		const parsedValue = JSON.parse(atob(elem.value))
 		window._nc_initial_state.set(selector, parsedValue)
 		return parsedValue
-	} catch (e) {
-		throw new Error(`Could not parse initial state ${key} of ${app}`)
+	} catch (error) {
+		throw new Error(`Could not parse initial state ${key} of ${app}`, { cause: error })
 	}
 }