Squashed 'src/pi/' content from commit d981de122

git-subtree-dir: src/pi
git-subtree-split: d981de1229ef899957bbe968bc8dcda02a21f477

packages/coding-agent/test/suite/regressions/8237-node-sea-extension-loading.test.ts

@@ -0,0 +1,50 @@
+import { afterAll, describe, expect, it, vi } from "vitest";
+
+const state = vi.hoisted(() => {
+	const originalGetBuiltinModule = Object.getOwnPropertyDescriptor(process, "getBuiltinModule");
+	const getBuiltinModule = process.getBuiltinModule.bind(process);
+	Object.defineProperty(process, "getBuiltinModule", {
+		configurable: true,
+		value: (id: string) => (id === "node:sea" ? { isSea: () => true } : getBuiltinModule(id)),
+	});
+	return {
+		originalGetBuiltinModule,
+		createJiti: vi.fn((_id: unknown, _options: unknown) => ({
+			import: vi.fn(async () => () => {}),
+		})),
+	};
+});
+
+vi.mock("jiti/static", () => ({ createJiti: state.createJiti }));
+
+import { loadExtensions } from "../../../src/core/extensions/loader.ts";
+
+interface JitiOptionsProbe {
+	alias?: unknown;
+	tryNative?: boolean;
+	virtualModules?: Record<string, unknown>;
+}
+
+afterAll(() => {
+	if (state.originalGetBuiltinModule) {
+		Object.defineProperty(process, "getBuiltinModule", state.originalGetBuiltinModule);
+	}
+});
+
+describe("Node SEA extension loading", () => {
+	it("uses bundled virtual modules instead of filesystem aliases", async () => {
+		const result = await loadExtensions(["/extension.ts"], "/");
+
+		expect(result.errors).toEqual([]);
+		expect(result.extensions).toHaveLength(1);
+		expect(state.createJiti).toHaveBeenCalledOnce();
+
+		const options = state.createJiti.mock.calls[0][1] as JitiOptionsProbe;
+		// Source TypeScript also uses virtual modules, so tryNative: false is what
+		// proves the compiled-binary branch took precedence over the source branch.
+		expect(options.tryNative).toBe(false);
+		expect(options.alias).toBeUndefined();
+		expect(options.virtualModules?.typebox).toBeDefined();
+		expect(options.virtualModules?.["@earendil-works/pi-coding-agent"]).toBeDefined();
+	});
+});