diff --git a/src/plugins/install.test.ts b/src/plugins/install.test.ts
index e78993d61..c29030e07 100644
--- a/src/plugins/install.test.ts
+++ b/src/plugins/install.test.ts
@@ -14,18 +14,38 @@ function makeTempDir() {
   return dir;
 }
 
-function packToArchive({ pkgDir, outDir, outName }: { pkgDir: string; outDir: string; outName: string }) {
-  const res = spawnSync("npm", ["pack", "--silent", "--pack-destination", outDir, pkgDir], {
-    encoding: "utf-8",
-  });
+function packToArchive({
+  pkgDir,
+  outDir,
+  outName,
+}: {
+  pkgDir: string;
+  outDir: string;
+  outName: string;
+}) {
+  const res = spawnSync(
+    "npm",
+    ["pack", "--silent", "--pack-destination", outDir, pkgDir],
+    {
+      encoding: "utf-8",
+    },
+  );
   expect(res.status).toBe(0);
   if (res.status !== 0) {
-    throw new Error(`npm pack failed: ${res.stderr || res.stdout || "<no output>"}`);
+    throw new Error(
+      `npm pack failed: ${res.stderr || res.stdout || "<no output>"}`,
+    );
   }
 
-  const packed = (res.stdout || "").trim().split(/\r?\n/).filter(Boolean).at(-1);
+  const packed = (res.stdout || "")
+    .trim()
+    .split(/\r?\n/)
+    .filter(Boolean)
+    .at(-1);
   if (!packed) {
-    throw new Error(`npm pack did not output a filename: ${res.stdout || "<no stdout>"}`);
+    throw new Error(
+      `npm pack did not output a filename: ${res.stdout || "<no stdout>"}`,
+    );
   }
 
   const src = path.join(outDir, packed);
@@ -82,7 +102,11 @@ describe("installPluginFromArchive", () => {
       "utf-8",
     );
 
-    const archivePath = packToArchive({ pkgDir, outDir: workDir, outName: "plugin.tgz" });
+    const archivePath = packToArchive({
+      pkgDir,
+      outDir: workDir,
+      outName: "plugin.tgz",
+    });
 
     const result = await withStateDir(stateDir, async () => {
       const { installPluginFromArchive } = await import("./install.js");
@@ -122,7 +146,11 @@ describe("installPluginFromArchive", () => {
       "utf-8",
     );
 
-    const archivePath = packToArchive({ pkgDir, outDir: workDir, outName: "plugin.tgz" });
+    const archivePath = packToArchive({
+      pkgDir,
+      outDir: workDir,
+      outName: "plugin.tgz",
+    });
 
     const { first, second } = await withStateDir(stateDir, async () => {
       const { installPluginFromArchive } = await import("./install.js");
@@ -148,7 +176,11 @@ describe("installPluginFromArchive", () => {
       "utf-8",
     );
 
-    const archivePath = packToArchive({ pkgDir, outDir: workDir, outName: "bad.tgz" });
+    const archivePath = packToArchive({
+      pkgDir,
+      outDir: workDir,
+      outName: "bad.tgz",
+    });
 
     const result = await withStateDir(stateDir, async () => {
       const { installPluginFromArchive } = await import("./install.js");