Change the types for BaseControllerV1 class fields initialConfig, initialState from C, S to Partial<C>, Partial<S>

Author: MajorLift

packages/base-controller/CHANGELOG.md

@@ -9,7 +9,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Changed
 
-- **BREAKING:** Convert `BaseConfig`, `BaseState` interfaces to types.
+- **BREAKING:** Convert `BaseConfig`, `BaseState` interfaces to types ([#3959](https://github.com/MetaMask/core/pull/3959))
   - As types, `BaseConfig`, `BaseState` now extend `Record` and have an index signature of `string`.
 
 ## [4.1.1]

packages/base-controller/src/BaseControllerV1.ts

@@ -53,9 +53,9 @@ export class BaseControllerV1<C extends BaseConfig, S extends BaseState> {
    */
   name = 'BaseController';
 
-  private readonly initialConfig: C;
+  private readonly initialConfig: Partial<C>;
 
-  private readonly initialState: S;
+  private readonly initialState: Partial<S>;
 
   private internalConfig: C = this.defaultConfig;
 
@@ -71,8 +71,8 @@ export class BaseControllerV1<C extends BaseConfig, S extends BaseState> {
    * @param state - Initial state to set on this controller.
    */
   constructor(config: Partial<C> = {}, state: Partial<S> = {}) {
-    this.initialState = { ...(state as S) };
-    this.initialConfig = { ...(config as C) };
+    this.initialState = state;
+    this.initialConfig = config;
   }
 
   /**