fix: isolate plugin index loader env

test/scripts/plugin-index-sqlite.test.ts

@@ -5,24 +5,15 @@ import path from "node:path";
 import { DatabaseSync } from "node:sqlite";
 import { pathToFileURL } from "node:url";
 import { describe, expect, it } from "vitest";
+import { withEnvAsync } from "../../src/test-utils/env.js";
 
 const MODULE_URL = pathToFileURL(path.resolve("scripts/e2e/lib/plugin-index-sqlite.mjs")).href;
 let importCounter = 0;
 
 async function loadPluginIndex(env: Record<string, string> = {}) {
-  const previous = new Map(Object.keys(env).map((key) => [key, process.env[key]]));
-  Object.assign(process.env, env);
-  try {
+  return await withEnvAsync(env, async () => {
     return await import(`${MODULE_URL}?case=${importCounter++}`);
-  } finally {
-    for (const [key, value] of previous) {
-      if (value === undefined) {
-        delete process.env[key];
-      } else {
-        process.env[key] = value;
-      }
-    }
-  }
+  });
 }
 
 function writeLegacyIndex(root: string, text: string) {