Function isZodSchema

packages/components/src/utils.ts:2321–2322

(schema: unknown)

 * whichever Zod major version (`^3 || ^4`) TypeScript resolves at the call site.
 */
export const isZodSchema = (schema: unknown): schema is ZodToJsonSchemaInput =>
    typeof schema === 'object' && schema !== null && '_def' in schema && typeof (schema as { parse?: unknown }).parse === 'function'

/**
 * Normalizes a tool schema into a plain JSON Schema object.