refactor: migrate OC.*QueryString from jQuery

core/src/OC/index.js

@@ -64,7 +64,7 @@ import Plugins from './plugins.js'
 import {
 	build as buildQueryString,
 	parse as parseQueryString,
-} from './query-string.js'
+} from './query-string.ts'
 import { getRequestToken } from './requesttoken.ts'
 import {
 	linkToRemoteBase,
@@ -186,9 +186,7 @@ export default {
 	 */
 	getLanguage,
 
-	/**
-	 * Query string helpers
-	 */
+	// Query string helpers
 	buildQueryString,
 	parseQueryString,
 

core/src/OC/query-string.spec.ts

@@ -0,0 +1,28 @@
+/**
+ * SPDX-FileCopyrightText: 2026 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+
+import { expect, test } from 'vitest'
+import { build, parse } from './query-string.js'
+
+test.for([
+	['foo', { foo: '' }],
+	['foo&bar', { foo: '', bar: '' }],
+	['foo=1', { foo: '1' }],
+	['foo=1&bar=1+1', { foo: '1', bar: '1 1' }],
+	['foo=1&bar=1%201', { foo: '1', bar: '1 1' }],
+	['?foo=1&bar=1%201', { foo: '1', bar: '1 1' }],
+] as const)('Parse URL query: $0', ([input, output]) => {
+	expect(parse(input)).toStrictEqual(output)
+})
+
+test.for([
+	[{ foo: '' }, 'foo='],
+	[{ foo: '', bar: '' }, 'foo=&bar='],
+	[{ foo: '1' }, 'foo=1'],
+	[{ foo: '1', bar: '1 1' }, 'foo=1&bar=1+1'],
+	[{ foo: 'ümlaut' }, 'foo=%C3%BCmlaut'],
+] as const)('Build URL query: $0', ([input, output]) => {
+	expect(build(input)).toStrictEqual(output)
+})

core/src/OC/query-string.ts

@@ -0,0 +1,32 @@
+/**
+ * SPDX-FileCopyrightText: 2019 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+
+/**
+ * Parses a URL query string into a JS map
+ *
+ * @param queryString - Query string in the format param1=1234&param2=abcde&param3=xyz
+ * @return Object containing key/values matching the URL parameters
+ * @deprecated 33.0.0 - Use `URLSearchParams` instead
+ */
+export function parse(queryString: string): Record<string, string> {
+	const params = new URLSearchParams(queryString)
+	return Object.fromEntries(params.entries())
+}
+
+/**
+ * Builds a URL query from a JS map.
+ *
+ * @param params - Object containing key/values matching the URL parameters
+ * @return String containing a URL query (without question) mark
+ * @deprecated 33.0.0 - Use `URLSearchParams` instead
+ */
+export function build(params: Record<string, string>): string {
+	if (!params) {
+		return ''
+	}
+
+	const search = new URLSearchParams(params)
+	return search.toString()
+}