feat: implement ZodSet visitor and add set type support

src/lib/primitives/zod/zod.ts

@@ -373,8 +373,13 @@ export const zodVisitor: {
     ZodMap: () => {
         throw new Error('Function not implemented.')
     },
-    ZodSet: () => {
-        throw new Error('Function not implemented.')
+    ZodSet: (node, ctx) => {
+        const value = $array(ctx.render(node._def.valueType), {
+            minItems: node._def.minSize?.value,
+            maxItems: node._def.maxSize?.value,
+            set: true,
+        })
+        return value
     },
     ZodFunction: () => {
         throw new Error('Function not implemented.')

src/lib/visitor/arbitrary/arbitrary.ts

@@ -397,15 +397,21 @@ export const arbitraryVisitor: ThereforeVisitor<Arbitrary<unknown>, ArbitraryCon
         }
         return composite
     },
-    array: ({ _children: [items], _options: options }, context) => {
+    array: ({ _children: [items], _options: options, _origin: { zod } }, context) => {
         const { minLength, maxLength, ...restArbitrary } = options.arbitrary ?? {}
         const child = context.arbitrary(items)
         if (options.set === true) {
-            return set(child, {
+            const value = set(child, {
                 minLength: options.minItems ?? minLength,
                 maxLength: options.maxItems ?? maxLength,
                 ...restArbitrary,
             })
+
+            if (zod !== undefined && (zod as ZodFirstPartySchemaTypes)._def.typeName === 'ZodSet') {
+                return value.map((x) => new Set(x))
+            }
+
+            return value
         }
         return array(child, {
             minLength: options.minItems ?? minLength,