how to generate readonly types with client preset ?

[socnacom]

Hi !

I know it's possible to generate readonly data model with typescript plugin.
Is there a way to reproduce same behavior with client preset ?
Could be very useful because I try to keep my frontend types as readonly as I can.

Thanks for your help

---

Edit :
I've applied following patch

diff --git a/node_modules/@graphql-codegen/client-preset/cjs/index.js b/node_modules/@graphql-codegen/client-preset/cjs/index.js
index 60c5891..6b23b69 100644
--- a/node_modules/@graphql-codegen/client-preset/cjs/index.js
+++ b/node_modules/@graphql-codegen/client-preset/cjs/index.js
@@ -107,7 +107,13 @@ exports.preset = {
         }
         const plugins = [
             { [`add`]: { content: `/* eslint-disable */` } },
-            { [`typescript`]: {} },
+            { [`typescript`]: {
+                immutableTypes: true,
+                declarationKind: {
+                  input: 'class',
+                },
+              }
+            },
             { [`typescript-operations`]: {} },
             {
                 [`typed-document-node`]: {