From 8777e24ff36a00a6faaff4fc21ef6af52bf79814 Mon Sep 17 00:00:00 2001
From: Olavi Mustanoja <tilastokeskus@gmail.com>
Date: Thu, 15 Feb 2018 13:54:17 +0200
Subject: [PATCH 1/4] fix ts declarations to support currying and immutable
 state

---
 src/immer.d.ts | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/immer.d.ts b/src/immer.d.ts
index 17aec72f..c8ee853b 100644
--- a/src/immer.d.ts
+++ b/src/immer.d.ts
@@ -1,3 +1,7 @@
+type Mutable<T extends {[x: string]: any}, K extends string> = {
+	[P in K]: T[P];
+}
+
 /**
  * Immer takes a state, and runs a function against it.
  * That function can freely mutate the state, as it will create copies-on-write.
@@ -12,7 +16,7 @@
  */
 export default function<S = any>(
     currentState: S,
-    recipe: (this: S, draftState: S) => void
+    recipe?: (this: S, draftState: Mutable<S, keyof S>) => void
 ): S
 // curried invocations
 export default function<S = any, A = any, B = any, C = any>(

From 862acf6d927ff7b63dc772c7176555b5baef490c Mon Sep 17 00:00:00 2001
From: Olavi Mustanoja <tilastokeskus@gmail.com>
Date: Thu, 15 Feb 2018 14:34:06 +0200
Subject: [PATCH 2/4] export MutableState and Recipe types

---
 src/immer.d.ts | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/src/immer.d.ts b/src/immer.d.ts
index c8ee853b..5adfd209 100644
--- a/src/immer.d.ts
+++ b/src/immer.d.ts
@@ -1,7 +1,9 @@
-type Mutable<T extends {[x: string]: any}, K extends string> = {
+export type MutableState<T extends {[x: string]: any}, K extends string> = {
 	[P in K]: T[P];
 }
 
+export type Recipe<S> = (this: S, draftState: MutableState<S, keyof S>) => void;
+
 /**
  * Immer takes a state, and runs a function against it.
  * That function can freely mutate the state, as it will create copies-on-write.
@@ -11,12 +13,12 @@ type Mutable<T extends {[x: string]: any}, K extends string> = {
  * any time it is called with a base state
  *
  * @param currentState - the state to start with
- * @param thunk - function that receives a proxy of the current state as first argument and which can be freely modified
+ * @param recipe - function that receives a proxy of the current state as first argument and which can be freely modified
  * @returns The next state: a new state, or the current state if nothing was modified
  */
 export default function<S = any>(
     currentState: S,
-    recipe?: (this: S, draftState: Mutable<S, keyof S>) => void
+    recipe?: Recipe<S>
 ): S
 // curried invocations
 export default function<S = any, A = any, B = any, C = any>(

From 3228d96a0b9500e26f35ad3fed277b28fba7b84e Mon Sep 17 00:00:00 2001
From: Olavi Mustanoja <tilastokeskus@gmail.com>
Date: Thu, 15 Feb 2018 14:36:18 +0200
Subject: [PATCH 3/4] use spaces instead of tabs

---
 src/immer.d.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/immer.d.ts b/src/immer.d.ts
index 5adfd209..c6fa1920 100644
--- a/src/immer.d.ts
+++ b/src/immer.d.ts
@@ -1,5 +1,5 @@
 export type MutableState<T extends {[x: string]: any}, K extends string> = {
-	[P in K]: T[P];
+    [P in K]: T[P];
 }
 
 export type Recipe<S> = (this: S, draftState: MutableState<S, keyof S>) => void;

From a01a0ff9e57d31251816cce4a4fac9d3af2e7c46 Mon Sep 17 00:00:00 2001
From: Olavi Mustanoja <tilastokeskus@gmail.com>
Date: Wed, 21 Feb 2018 02:24:24 +0200
Subject: [PATCH 4/4] make draftState mutable recursively

---
 src/immer.d.ts | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/src/immer.d.ts b/src/immer.d.ts
index c6fa1920..e2df956f 100644
--- a/src/immer.d.ts
+++ b/src/immer.d.ts
@@ -1,8 +1,4 @@
-export type MutableState<T extends {[x: string]: any}, K extends string> = {
-    [P in K]: T[P];
-}
-
-export type Recipe<S> = (this: S, draftState: MutableState<S, keyof S>) => void;
+export type Recipe<S> = (this: S, draftState: S | any) => void;
 
 /**
  * Immer takes a state, and runs a function against it.