chore: replace querystring with URLSearchParams (#107)

* chore: replace querystring with URLSearchParams

* refactor: improve query parser

Author: bluwy

.changeset/breezy-kids-divide.md

@@ -0,0 +1,5 @@
+---
+'@sveltejs/vite-plugin-svelte': patch
+---
+
+replace querystring with URLSearchParams

packages/vite-plugin-svelte/src/utils/id.ts

@@ -1,5 +1,4 @@
 /* eslint-disable no-unused-vars */
-import qs from 'querystring';
 import { createFilter } from '@rollup/pluginutils';
 import { Arrayable, ResolvedOptions } from './options';
 import { normalizePath } from 'vite';
@@ -44,13 +43,7 @@ function parseToSvelteRequest(
 	timestamp: number,
 	ssr: boolean
 ): SvelteRequest | undefined {
-	const query: RequestQuery = qs.parse(rawQuery) as RequestQuery;
-	for (const p of ['svelte', 'url', 'raw'] as Array<keyof RequestQuery>) {
-		if (query[p] != null) {
-			// @ts-ignore
-			query[p] = true;
-		}
-	}
+	const query = parseRequestQuery(rawQuery);
 	if (query.url || query.raw) {
 		// skip requests with special vite tags
 		return;
@@ -85,6 +78,17 @@ function createVirtualImportId(filename: string, root: string, type: SvelteQuery
 	return `${filename}?${parts.join('&')}`;
 }
 
+function parseRequestQuery(rawQuery: string): RequestQuery {
+	const query = Object.fromEntries(new URLSearchParams(rawQuery));
+	for (const key in query) {
+		if (query[key] === '') {
+			// @ts-ignore
+			query[key] = true;
+		}
+	}
+	return query as RequestQuery;
+}
+
 /**
  * posixify and remove root at start
  *