fix: test

scripts/bundled-plugins.test.ts

@@ -1,4 +1,4 @@
-import { afterEach, describe, expect, it } from "vitest";
+import { afterEach, describe, expect, it, vi } from "vitest";
 import crypto from "node:crypto";
 import fs from "node:fs";
 import os from "node:os";
@@ -471,6 +471,27 @@ describe("rebuilding local plugins", () => {
     expect(isLocalBuildStale(root)).toBe(false);
   });
 
+  it("survives a build replacing dist during the scan", () => {
+    const root = repo(tempDir(), "Plugin-A", "a");
+    const gone = path.join(root, "dist", "migrations", "postgres");
+    fs.mkdirSync(gone, { recursive: true });
+    fs.writeFileSync(path.join(root, "manifest.json"), "{}");
+    const realStat = fs.statSync;
+    const spy = vi.spyOn(fs, "statSync").mockImplementation(((
+      target: string,
+    ) => {
+      if (target === gone) {
+        throw Object.assign(new Error("gone"), { code: "ENOENT" });
+      }
+      return realStat(target);
+    }) as typeof fs.statSync);
+    try {
+      expect(() => isLocalBuildStale(root)).not.toThrow();
+    } finally {
+      spy.mockRestore();
+    }
+  });
+
   it("builds with this checkout's SDK CLI, not the plugin's own", () => {
     const [command, args] = localSdkBuildCommand();
     expect(command).toBe(process.execPath);

scripts/lib/bundled-plugins.cjs

@@ -370,15 +370,20 @@ const BUILD_INPUTS = [
   "package.json",
 ];
 
+// A build can replace dist while this walks it, so a path can vanish mid scan.
 function newestMtime(target) {
-  if (!fs.existsSync(target)) return 0;
-  const stat = fs.statSync(target);
-  if (!stat.isDirectory()) return stat.mtimeMs;
-  let newest = 0;
-  for (const name of fs.readdirSync(target)) {
-    newest = Math.max(newest, newestMtime(path.join(target, name)));
+  try {
+    const stat = fs.statSync(target);
+    if (!stat.isDirectory()) return stat.mtimeMs;
+    let newest = 0;
+    for (const name of fs.readdirSync(target)) {
+      newest = Math.max(newest, newestMtime(path.join(target, name)));
+    }
+    return newest;
+  } catch (error) {
+    if (error.code === "ENOENT") return 0;
+    throw error;
   }
-  return newest;
 }
 
 /** True when a plugin repo has never been built or its sources changed since. */