fix(ai): skip AJV validation in restricted runtimes closes #2395

packages/ai/test/validation.test.ts

@@ -0,0 +1,39 @@
+import { Type } from "@sinclair/typebox";
+import { afterEach, describe, expect, it, vi } from "vitest";
+import type { ToolCall } from "../src/types.js";
+import { validateToolArguments } from "../src/utils/validation.js";
+
+afterEach(() => {
+	vi.restoreAllMocks();
+});
+
+describe("validateToolArguments", () => {
+	it("falls back to raw arguments without writing to stderr when runtime code generation is blocked", () => {
+		const originalFunction = globalThis.Function;
+		const errorSpy = vi.spyOn(console, "error").mockImplementation(() => {});
+		const tool = {
+			name: "echo",
+			description: "Echo tool",
+			parameters: Type.Object({
+				count: Type.Number(),
+			}),
+		};
+		const toolCall: ToolCall = {
+			type: "toolCall",
+			id: "tool-1",
+			name: "echo",
+			arguments: { count: "42" as unknown as number },
+		};
+
+		globalThis.Function = (() => {
+			throw new EvalError("Code generation from strings disallowed for this context");
+		}) as unknown as FunctionConstructor;
+
+		try {
+			expect(validateToolArguments(tool, toolCall)).toEqual(toolCall.arguments);
+			expect(errorSpy).not.toHaveBeenCalled();
+		} finally {
+			globalThis.Function = originalFunction;
+		}
+	});
+});