Make existing and new issue URLs configurable (#10710)

* Make existing and new issue URLs configurable

* Apply a deep merge over sdk config to allow sane nested structures

* Defaultize

* Fix types

* Iterate

* Add FeedbackDialog snapshot test

* Add SdkConfig snapshot tests

* Iterate

* Fix tests

* Iterate types

* Fix test

src/@types/common.ts

@@ -54,3 +54,25 @@ export type KeysStartingWith<Input extends object, Str extends string> = {
 }[keyof Input];
 
 export type NonEmptyArray<T> = [T, ...T[]];
+
+export type Defaultize<P, D> = P extends any
+    ? string extends keyof P
+        ? P
+        : Pick<P, Exclude<keyof P, keyof D>> &
+              Partial<Pick<P, Extract<keyof P, keyof D>>> &
+              Partial<Pick<D, Exclude<keyof D, keyof P>>>
+    : never;
+
+export type DeepReadonly<T> = T extends (infer R)[]
+    ? DeepReadonlyArray<R>
+    : T extends Function
+    ? T
+    : T extends object
+    ? DeepReadonlyObject<T>
+    : T;
+
+interface DeepReadonlyArray<T> extends ReadonlyArray<DeepReadonly<T>> {}
+
+type DeepReadonlyObject<T> = {
+    readonly [P in keyof T]: DeepReadonly<T[P]>;
+};

src/@types/global.d.ts

@@ -49,6 +49,7 @@ import ActiveWidgetStore from "../stores/ActiveWidgetStore";
 import AutoRageshakeStore from "../stores/AutoRageshakeStore";
 import { IConfigOptions } from "../IConfigOptions";
 import { MatrixDispatcher } from "../dispatcher/dispatcher";
+import { DeepReadonly } from "./common";
 
 /* eslint-disable @typescript-eslint/naming-convention */
 
@@ -59,7 +60,7 @@ declare global {
         Olm: {
             init: () => Promise<void>;
         };
-        mxReactSdkConfig: IConfigOptions;
+        mxReactSdkConfig: DeepReadonly<IConfigOptions>;
 
         // Needed for Safari, unknown to TypeScript
         webkitAudioContext: typeof AudioContext;