From f4769aa56386505a179eb660c991069a586236d8 Mon Sep 17 00:00:00 2001
From: ShaMan123 <34343793+ShaMan123@users.noreply.github.com>
Date: Sat, 21 Sep 2019 23:10:28 +0300
Subject: [PATCH] add event mapping type (#388)

(cherry picked from commit 52ffd70eff65035992e4c269125924e11cf0c44c)
---
 react-native-reanimated.d.ts | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/react-native-reanimated.d.ts b/react-native-reanimated.d.ts
index df602d0c15f..93cba44e0f2 100644
--- a/react-native-reanimated.d.ts
+++ b/react-native-reanimated.d.ts
@@ -253,9 +253,12 @@ declare module 'react-native-reanimated' {
     export function clockRunning(clock: AnimatedClock): AnimatedNode<0 | 1>;
     // the return type for `event` is a lie, but it's the same lie that
     // react-native makes within Animated
-    export function event(
-      argMapping: ReadonlyArray<Mapping>,
-      config?: {},
+    type EventArgFunc<T> = (arg: T) => Node<number>;
+    type EventMapping<T> = T extends object ? { [K in keyof T]?: EventMapping<T[K]> | EventArgFunc<T[K]> } : Adaptable<T> | EventArgFunc<T>;
+    type EventMappingArray<T> = T extends Array<any> ? { [I in keyof T]: EventMapping<T[I]> } : [EventMapping<T>]
+    export function event<T>(
+        argMapping: T extends never ? ReadonlyArray<Mapping> : Readonly<EventMappingArray<T>>,
+        config?: {},
     ): (...args: any[]) => void;
 
     // derived operations