From 294aaca92e02baf0044415547e69d15af3e7a1ff Mon Sep 17 00:00:00 2001
From: Thammi <thammi@chaossource.net>
Date: Thu, 20 Feb 2020 14:40:50 +0100
Subject: [PATCH 1/2] Improve types to support reducers with and without
 default handling

---
 index.d.ts | 17 +++++++++++++----
 1 file changed, 13 insertions(+), 4 deletions(-)

diff --git a/index.d.ts b/index.d.ts
index f29eb8c..9d72f21 100644
--- a/index.d.ts
+++ b/index.d.ts
@@ -2,12 +2,21 @@ type Action = {
   type: string;
 };
 
-type Reducer<S> = (state: S, action: Action) => S;
+type Reducer<S> = (state: S | undefined, action: Action) => S;
+type PreloadedReducer<S> = (state: S, action: Action) => S;
 
 export default function reduceReducers<S>(
-  initialState: S | null,
-  ...reducers: Reducer<S>[]
+  initialState: S,
+  ...reducers: PreloadedReducer<S>[]
 ): Reducer<S>;
 export default function reduceReducers<S>(
-  ...reducers: Reducer<S>[]
+  initialReducer: Reducer<S>,
+  ...reducers: PreloadedReducer<S>[]
 ): Reducer<S>;
+export default function reduceReducers<S>(
+  initialState: S | null,
+  ...reducers: PreloadedReducer<S>[]
+): PreloadedReducer<S>;
+export default function reduceReducers<S>(
+  ...reducers: PreloadedReducer<S>[]
+): PreloadedReducer<S>;

From 933db0d28ed396a229f47bd4253c2c6d1394fe6e Mon Sep 17 00:00:00 2001
From: Thammi <thammi@chaossource.net>
Date: Wed, 26 Feb 2020 16:23:53 +0100
Subject: [PATCH 2/2] Add one definition for initalValue and initialReducer

---
 index.d.ts | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/index.d.ts b/index.d.ts
index 9d72f21..39dc6d0 100644
--- a/index.d.ts
+++ b/index.d.ts
@@ -13,6 +13,11 @@ export default function reduceReducers<S>(
   initialReducer: Reducer<S>,
   ...reducers: PreloadedReducer<S>[]
 ): Reducer<S>;
+export default function reduceReducers<S>(
+  initialState: S | null,
+  initialReducer: Reducer<S>,
+  ...reducers: PreloadedReducer<S>[]
+): Reducer<S>;
 export default function reduceReducers<S>(
   initialState: S | null,
   ...reducers: PreloadedReducer<S>[]