fix: readWrite transform drops unevaluatedProperties schemas with readOnly sibling

Add `unevaluatedProperties` to `childSchemaRelationships` as 'single' type
(same as `additionalProperties`) so the pruneSchemaByScope function
correctly recognizes it as a structural keyword and does not remove
schemas that use it alongside readOnly properties.

Co-authored-by: mrlubos <12529395+mrlubos@users.noreply.github.com>

Author: Copilot

packages/openapi-ts-tests/main/test/3.1.x.test.ts

@@ -737,6 +737,14 @@ describe(`OpenAPI ${version}`, () => {
       }),
       description: 'handles read-only types in nested response schemas',
     },
+    {
+      config: createConfig({
+        input: 'transforms-read-write-unevaluated.yaml',
+        output: 'transforms-read-write-unevaluated',
+        plugins: ['@hey-api/typescript'],
+      }),
+      description: 'preserves unevaluatedProperties in schemas with readOnly fields',
+    },
     {
       config: createConfig({
         input: 'ref-type.json',

packages/openapi-ts-tests/main/test/__snapshots__/3.1.x/transforms-read-write-unevaluated/index.ts

@@ -0,0 +1,3 @@
+// This file is auto-generated by @hey-api/openapi-ts
+
+export type { ClientOptions, CreateXData, CreateXResponse, CreateXResponses, DisposableEmail, DisposableEmailWritable, GetXData, GetXResponse, GetXResponses } from './types.gen';

packages/openapi-ts-tests/main/test/__snapshots__/3.1.x/transforms-read-write-unevaluated/types.gen.ts

@@ -0,0 +1,52 @@
+// This file is auto-generated by @hey-api/openapi-ts
+
+export type ClientOptions = {
+    baseUrl: `${string}://${string}` | (string & {});
+};
+
+export type DisposableEmail = {
+    domain: string;
+    readonly disposable: boolean;
+    metadata: {
+        [key: string]: unknown;
+    };
+};
+
+export type DisposableEmailWritable = {
+    domain: string;
+    metadata: {
+        [key: string]: unknown;
+    };
+};
+
+export type GetXData = {
+    body?: never;
+    path?: never;
+    query?: never;
+    url: '/x';
+};
+
+export type GetXResponses = {
+    /**
+     * ok
+     */
+    200: DisposableEmail;
+};
+
+export type GetXResponse = GetXResponses[keyof GetXResponses];
+
+export type CreateXData = {
+    body: DisposableEmailWritable;
+    path?: never;
+    query?: never;
+    url: '/x';
+};
+
+export type CreateXResponses = {
+    /**
+     * ok
+     */
+    200: DisposableEmail;
+};
+
+export type CreateXResponse = CreateXResponses[keyof CreateXResponses];

packages/shared/src/openApi/shared/transforms/readWrite.ts

@@ -46,6 +46,7 @@ const schemaKeys = new Set([
   'patternProperties',
   'properties',
   'schema',
+  'unevaluatedProperties',
 ]);
 
 const getComponentContext = (path: ReadonlyArray<string | number>): Scope | undefined => {

packages/shared/src/openApi/shared/utils/schemaChildRelationships.ts

@@ -12,4 +12,5 @@ export const childSchemaRelationships = [
   ['properties', 'objectMap'],
   ['propertyNames', 'single'],
   ['then', 'single'],
+  ['unevaluatedProperties', 'single'],
 ] as const;

specs/3.1.x/transforms-read-write-unevaluated.yaml

@@ -0,0 +1,47 @@
+openapi: 3.1.0
+info:
+  title: readOnly map property with unevaluatedProperties
+  version: 1.0.0
+paths:
+  /x:
+    get:
+      operationId: getX
+      responses:
+        '200':
+          description: ok
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/DisposableEmail'
+    post:
+      operationId: createX
+      requestBody:
+        required: true
+        content:
+          application/json:
+            schema:
+              $ref: '#/components/schemas/DisposableEmail'
+      responses:
+        '200':
+          description: ok
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/DisposableEmail'
+components:
+  schemas:
+    DisposableEmail:
+      type: object
+      required:
+        - domain
+        - disposable
+        - metadata
+      properties:
+        domain:
+          type: string
+        disposable:
+          type: boolean
+          readOnly: true
+        metadata:
+          type: object
+          unevaluatedProperties: {}