fix: nested DeepImmutable and Immutable types neutralization

closes #65
the-dr-lazy · Jun 9, 2019 · d3f9a1a · d3f9a1a
1 parent c6c1d30
commit d3f9a1a
Showing 1 changed file with 8 additions and 0 deletions.
diff --git a/src/types.ts b/src/types.ts
@@ -17,6 +17,10 @@ export type Immutable<T> = T extends Primitive
   ? ReadonlyArray<U>
   : T extends Map<infer K, infer V>
   ? ReadonlyMap<K, V>
+  : T extends ReadonlyArray<any>
+  ? T
+  : T extends ReadonlyMap<any, any>
+  ? T
   : Readonly<T>
 
 export type DeepImmutable<T> = T extends Primitive
@@ -25,6 +29,10 @@ export type DeepImmutable<T> = T extends Primitive
   ? DeepImmutableArray<U>
   : T extends Map<infer K, infer V>
   ? DeepImmutableMap<K, V>
+  : T extends ReadonlyArray<infer U>
+  ? DeepImmutableArray<U>
+  : T extends ReadonlyMap<infer K, infer V>
+  ? DeepImmutableMap<K, V>
   : DeepImmutableObject<T>
 
 export type Reducer<TState, TAction> = (