diff --git a/packages/effect-fc/src/Component.ts b/packages/effect-fc/src/Component.ts
index f733015..e860189 100644
--- a/packages/effect-fc/src/Component.ts
+++ b/packages/effect-fc/src/Component.ts
@@ -10,6 +10,7 @@ export type TypeId = typeof TypeId
 export interface Component<E, R, P extends {}> extends Pipeable.Pipeable, Component.Options {
     new(_: never): {}
     readonly [TypeId]: TypeId
+    /** @internal */
     makeFunctionComponent(runtimeRef: React.Ref<Runtime.Runtime<Exclude<R, Scope.Scope>>>, scope: Scope.Scope): React.FC<P>
     readonly body: (props: P) => Effect.Effect<React.ReactNode, E, R>
 }
@@ -327,7 +328,7 @@ export const withOptions: {
     self: T,
     options: Partial<Component.Options>,
 ): T => Object.setPrototypeOf(
-    { ...self, ...options },
+    Object.assign(function() {}, self, options),
     Object.getPrototypeOf(self),
 ))
 
diff --git a/packages/effect-fc/src/Memoized.ts b/packages/effect-fc/src/Memoized.ts
index 0fadba3..09b476e 100644
--- a/packages/effect-fc/src/Memoized.ts
+++ b/packages/effect-fc/src/Memoized.ts
@@ -26,7 +26,7 @@ export const isMemoized = (u: unknown): u is Memoized<any> => Predicate.hasPrope
 export const memo = <T extends Component.Component<any, any, any>>(
     self: T
 ): T & Memoized<Component.Component.Props<T>> => Object.setPrototypeOf(
-    { ...self, ...MemoizedProto },
+    Object.assign(function() {}, self, MemoizedProto),
     Object.getPrototypeOf(self),
 )
 
@@ -42,6 +42,6 @@ export const withOptions: {
     self: T,
     options: Partial<Memoized.Options<Component.Component.Props<T>>>,
 ): T => Object.setPrototypeOf(
-    { ...self, ...options },
+    Object.assign(function() {}, self, options),
     Object.getPrototypeOf(self),
 ))
diff --git a/packages/effect-fc/src/Suspense.ts b/packages/effect-fc/src/Suspense.ts
index 93a7585..3b20fac 100644
--- a/packages/effect-fc/src/Suspense.ts
+++ b/packages/effect-fc/src/Suspense.ts
@@ -53,7 +53,7 @@ export const suspense = <T extends Component.Component<any, any, P>, P extends {
     & Component.Component<Component.Component.Error<T>, Component.Component.Context<T>, P & Suspense.Props>
     & Suspense
 ) => Object.setPrototypeOf(
-    { ...self, ...SuspenseProto },
+    Object.assign(function() {}, self, SuspenseProto),
     Object.getPrototypeOf(self),
 )
 
@@ -69,6 +69,6 @@ export const withOptions: {
     self: T,
     options: Partial<Suspense.Options>,
 ): T => Object.setPrototypeOf(
-    { ...self, ...options },
+    Object.assign(function() {}, self, options),
     Object.getPrototypeOf(self),
 ))