Mark APIs as readonly

src/client/pythonEnvironments/creation/proposed.createEnvApis.ts

@@ -40,7 +40,7 @@ export interface EnvironmentWillCreateEvent {
     /**
      * Options used to create a Python environment.
      */
-    options: CreateEnvironmentOptions | undefined;
+    readonly options: CreateEnvironmentOptions | undefined;
 }
 
 export type CreateEnvironmentResult =
@@ -115,7 +115,7 @@ export type EnvironmentDidCreateEvent = CreateEnvironmentResult & {
     /**
      * Options used to create the Python environment.
      */
-    options: CreateEnvironmentOptions | undefined;
+    readonly options: CreateEnvironmentOptions | undefined;
 };
 
 /**
@@ -163,14 +163,14 @@ export interface ProposedCreateEnvironmentAPI {
      * provider (including internal providers). This will also receive any options passed in
      * or defaults used to create environment.
      */
-    onWillCreateEnvironment: Event<EnvironmentWillCreateEvent>;
+    readonly onWillCreateEnvironment: Event<EnvironmentWillCreateEvent>;
 
     /**
      * This API can be used to detect when the environment provider exits for any registered
      * provider (including internal providers). This will also receive created environment path,
      * any errors, or user actions taken from the provider.
      */
-    onDidCreateEnvironment: Event<EnvironmentDidCreateEvent>;
+    readonly onDidCreateEnvironment: Event<EnvironmentDidCreateEvent>;
 
     /**
      * This API will show a QuickPick to select an environment provider from available list of