build(canvas): stabilize a2ui bundle inputs

test/scripts/bundle-a2ui.test.ts

@@ -0,0 +1,39 @@
+import path from "node:path";
+import { describe, expect, it } from "vitest";
+import {
+  getLocalRolldownCliCandidates,
+  isBundleHashInputPath,
+} from "../../scripts/bundle-a2ui.mjs";
+
+describe("scripts/bundle-a2ui.mjs", () => {
+  it("keeps generated renderer output out of bundle hash inputs", () => {
+    const repoRoot = path.resolve("repo-root");
+
+    expect(
+      isBundleHashInputPath(
+        path.join(repoRoot, "vendor", "a2ui", "renderers", "lit", "src", "index.ts"),
+        repoRoot,
+      ),
+    ).toBe(true);
+    expect(
+      isBundleHashInputPath(
+        path.join(repoRoot, "vendor", "a2ui", "renderers", "lit", "dist"),
+        repoRoot,
+      ),
+    ).toBe(false);
+    expect(
+      isBundleHashInputPath(
+        path.join(repoRoot, "vendor", "a2ui", "renderers", "lit", "dist", "src", "index.js"),
+        repoRoot,
+      ),
+    ).toBe(false);
+  });
+
+  it("prefers the installed rolldown CLI over a network dlx fallback", () => {
+    const repoRoot = path.resolve("repo-root");
+
+    expect(getLocalRolldownCliCandidates(repoRoot)[0]).toBe(
+      path.join(repoRoot, "node_modules", "rolldown", "bin", "cli.mjs"),
+    );
+  });
+});