[nitpick] The tool description appears confusing ('if the user does provide one')—it might be a typo; consider revising it to clarify the intended behavior.

style: The tools && exampleTools && condition means tools will only be processed if both frontend tools and example tools exist. This could prevent tool usage if exampleTools is empty or undefined in some scenarios.

syntax: Typo in description: 'Fetched' should be 'Fetches'

logic: Description has a logical error: 'if the user does provide one' contradicts the purpose of asking for location

style: Using a wildcard version (*) for @ai-sdk/react could lead to unexpected breaking changes when new versions are released. Consider pinning to a specific version or using a caret range for better stability.

style: Using z.any() as default parameters removes type safety. Consider using a more specific schema or requiring parameters to be explicitly provided.

Using wildcard version specifier (*) can lead to unpredictable build behavior

Adding exampleTools as a condition may break existing functionality if exampleTools is falsy, as the entire tools processing would be skipped

Inconsistent naming convention with prefixes. Consider removing 'Vercel_AI_SDK_' prefix since this is already in the Vercel AI SDK package.

Hard-coded location value 'Mumbai' reduces component reusability and makes testing with different locations difficult.

Function is marked as internal with underscore prefix but is still exported, creating ambiguity about intended usage.

Implementation creates a component that doesn't render anything (returns null) without documenting why.

Type assertion with empty object bypasses TypeScript's type checking, potentially hiding type errors.

Proxy handler only checks if property is a string but doesn't validate if it's a valid tool name in the toolbox.

Typo/wording: In the description for the getLocationFromUser tool (line 23-24), the phrase "if the user does provide one" is confusing. It might be a mistake; perhaps it should read "if the user does not provide one"?

🧹 Nitpick (assertive)

Improve function documentation for experimental feature

The JSDoc comment for the tool type is clear, but it would be helpful to add a note indicating that experimental_toToolResultContent is subject to change in future releases, given its experimental_ prefix.

🧹 Nitpick (assertive)

Consider adding a default type parameter example

The type parameters are defined with any defaults, which can reduce type safety. Consider adding documentation with examples of how to properly use the generic parameters for better developer experience.

🧹 Nitpick (assertive)

Use more specific typing for messages array

The messages property is typed as any[] which loses type safety. Consider using a more specific message type that matches the expected structure.

-  messages: any[];
+  messages: Array<{ role: string; content: string | object; }>;

🧹 Nitpick (assertive)

Consider streamlining redundant type aliases

There appear to be three very similar type aliases (Vercel_AI_SDK_ToolParameters, ToolParameters, and PARAMETERS) that all reference z.ZodTypeAny. Consider consolidating these or documenting their distinct purposes.

-type Vercel_AI_SDK_ToolParameters = z.ZodTypeAny;
-
-type ToolParameters = z.ZodTypeAny;
-export type PARAMETERS = z.ZodTypeAny;
+/**
+ * Type alias for Zod schema parameters
+ */
+export type Vercel_AI_SDK_ToolParameters = z.ZodTypeAny;
+
+// Re-export for backward compatibility or internal use
+type ToolParameters = Vercel_AI_SDK_ToolParameters;
+export type PARAMETERS = Vercel_AI_SDK_ToolParameters;

🧹 Nitpick (assertive)

Document the reason for disabling exactOptionalPropertyTypes

Adding "exactOptionalPropertyTypes": false makes TypeScript less strict about optional properties. Consider adding a comment explaining why this relaxation is necessary for the tool calling implementation.

+    // Disabled to support tool parameter handling where undefined values may be explicitly set
     "exactOptionalPropertyTypes": false,

🧹 Nitpick (assertive)

Add a newline at end of file

The file is missing a newline at the end, which is a common best practice and may affect some tools.

 }
+

🧹 Nitpick (assertive)

Avoid using wildcard versions for dependencies

Using "*" for @ai-sdk/react could lead to unexpected behavior if there are breaking changes. Specify a version range to ensure stability.

-    "@ai-sdk/react": "*",
+    "@ai-sdk/react": "^1.0.0", // Replace with appropriate version

Committable suggestion skipped: line range outside the PR's diff.

🧹 Nitpick (assertive)

Add a button type
Consider specifying type="button" to prevent default form submission behavior if this button is ever placed inside a form or if future changes wrap it in a form.

 <button
+  type="button"
   onClick={() => {
     a.addResult("Mumbai");
   }}
 >
   Answer Mumbai
 </button>

🧹 Nitpick (assertive)

Follow up on TODO for Langchain / Langgraph
A reminder that the code references adding support for these integrations. Consider opening a ticket for tracking or implementing in a future PR.

🧹 Nitpick (assertive)

Address commented-out execute logic
There is a commented code snippet for optional client-side execution. If you plan to implement it, consider re-enabling it in upcoming iterations. Otherwise, remove or clarify it to reduce confusion.

🧹 Nitpick (assertive)

Consider externalizing the weather icon
Refactoring to pass an icon or image as a prop can improve theming and testability.

🧹 Nitpick (assertive)

Remember the TODO
Langchain / langgraph integration is still pending. Let me know if you want me to open a new issue or help prepare a partial implementation.

🧹 Nitpick (assertive)

Use a narrower schema type
Using z.ZodTypeAny in InternalMakeAssistantToolArgs can degrade type safety. Consider a more specific schema type parameter if feasible.