fix(enum-values): access optional prop child props

Fixes: #2138

Author: darkbasic

packages/openapi-typescript/src/lib/ts.ts

@@ -164,7 +164,7 @@ function addIndexedAccess(node: ts.TypeReferenceNode | ts.IndexedAccessTypeNode,
  *       must check the parameter definition to determine the how to index into
  *       the openapi-typescript type.
  **/
-export function oapiRef(path: string, resolved?: OapiRefResolved): ts.TypeNode {
+export function oapiRef(path: string, resolved?: OapiRefResolved, deep = false): ts.TypeNode {
   const { pointer } = parseRef(path);
   if (pointer.length === 0) {
     throw new Error(`Error parsing $ref: ${path}. Is this a valid $ref?`);
@@ -179,7 +179,9 @@ export function oapiRef(path: string, resolved?: OapiRefResolved): ts.TypeNode {
   const restSegments = pointer.slice(3);
 
   const leadingType = addIndexedAccess(
-    ts.factory.createTypeReferenceNode(ts.factory.createIdentifier(String(initialSegment))),
+    ts.factory.createTypeReferenceNode(
+      ts.factory.createIdentifier(deep ? `DeepRequired<${String(initialSegment)}>` : String(initialSegment)),
+    ),
     ...leadingSegments,
   );
 
@@ -305,6 +307,16 @@ export function tsArrayLiteralExpression(
   let variableName = sanitizeMemberName(name);
   variableName = `${variableName[0].toLowerCase()}${variableName.substring(1)}`;
 
+  if (
+    options?.injectFooter &&
+    !options.injectFooter.some((node) => ts.isTypeAliasDeclaration(node) && node?.name?.escapedText === "DeepRequired")
+  ) {
+    const helper = stringToAST(
+      "type DeepRequired<T> = { [K in keyof T]: Required<DeepRequired<T[K]>> };",
+    )[0] as any;
+    options.injectFooter.push(helper);
+  }
+
   const arrayType = options?.readonly
     ? tsReadonlyArray(elementType, options.injectFooter)
     : ts.factory.createArrayTypeNode(elementType);

packages/openapi-typescript/src/transform/schema-object.ts

@@ -145,7 +145,7 @@ export function transformSchemaObjectWithComposition(
 
       const enumValuesArray = tsArrayLiteralExpression(
         enumValuesVariableName,
-        oapiRef(options.path ?? ""),
+        oapiRef(options.path ?? "", undefined, true),
         schemaObject.enum as (string | number)[],
         {
           export: true,