From b3258404880f84a842a2a5913dfb5c2233a8d715 Mon Sep 17 00:00:00 2001
From: dcrusader <dcrusader@users.noreply.github.com>
Date: Wed, 14 Jan 2015 16:33:38 -0800
Subject: [PATCH 1/2] Fix concat to receive a splat of arrays

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

diff --git a/underscore/underscore.d.ts b/underscore/underscore.d.ts
index f50488b66..903835e2f 100644
--- a/underscore/underscore.d.ts
+++ b/underscore/underscore.d.ts
@@ -3253,7 +3253,7 @@ interface _Chain<T> {
 	* @param arr Arrays and/or values to concatenate into a new array. See the discussion below for details.
 	* @return A new array comprised of the array on which it is called
 	**/
-	concat(...arr: Array<T>): _Chain<T>;
+	concat(...arr: Array<T[]>): _Chain<T>;
 
 	/**
 	* Join all elements of an array into a string.

From bac586a7f678aa03820fb09d0552f4c05030147b Mon Sep 17 00:00:00 2001
From: dcrusader <dcrusader@users.noreply.github.com>
Date: Thu, 15 Jan 2015 09:20:03 -0800
Subject: [PATCH 2/2] Fix chain methods to return the correct types

reduce, inject, foldl, reduceRight, and foldr should return _ChainSingle<TResult>
map and collect should return _Chain<TResult>
---
 underscore/underscore.d.ts | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/underscore/underscore.d.ts b/underscore/underscore.d.ts
index 903835e2f..8cf92df12 100644
--- a/underscore/underscore.d.ts
+++ b/underscore/underscore.d.ts
@@ -2458,39 +2458,39 @@ interface _Chain<T> {
 	/**
 	* @see _.map
 	**/
-	collect<TResult>(iterator: _.ListIterator<T, TResult>, context?: any): _Chain<T>;
+	collect<TResult>(iterator: _.ListIterator<T, TResult>, context?: any): _Chain<TResult>;
 
 	/**
 	* @see _.map
 	**/
-	collect<TResult>(iterator: _.ObjectIterator<T, TResult>, context?: any): _Chain<T>;
+	collect<TResult>(iterator: _.ObjectIterator<T, TResult>, context?: any): _Chain<TResult>;
 
 	/**
 	* Wrapped type `any[]`.
 	* @see _.reduce
 	**/
-	reduce<TResult>(iterator: _.MemoIterator<T, TResult>, memo?: TResult, context?: any): _Chain<T>;
+	reduce<TResult>(iterator: _.MemoIterator<T, TResult>, memo?: TResult, context?: any): _ChainSingle<TResult>;
 
 	/**
 	* @see _.reduce
 	**/
-	inject<TResult>(iterator: _.MemoIterator<T, TResult>, memo?: TResult, context?: any): _Chain<T>;
+	inject<TResult>(iterator: _.MemoIterator<T, TResult>, memo?: TResult, context?: any): _ChainSingle<TResult>;
 
 	/**
 	* @see _.reduce
 	**/
-	foldl<TResult>(iterator: _.MemoIterator<T, TResult>, memo?: TResult, context?: any): _Chain<T>;
+	foldl<TResult>(iterator: _.MemoIterator<T, TResult>, memo?: TResult, context?: any): _ChainSingle<TResult>;
 
 	/**
 	* Wrapped type `any[]`.
 	* @see _.reduceRight
 	**/
-	reduceRight<TResult>(iterator: _.MemoIterator<T, TResult>, memo?: TResult, context?: any): _Chain<T>;
+	reduceRight<TResult>(iterator: _.MemoIterator<T, TResult>, memo?: TResult, context?: any): _ChainSingle<TResult>;
 
 	/**
 	* @see _.reduceRight
 	**/
-	foldr<TResult>(iterator: _.MemoIterator<T, TResult>, memo?: TResult, context?: any): _Chain<T>;
+	foldr<TResult>(iterator: _.MemoIterator<T, TResult>, memo?: TResult, context?: any): _ChainSingle<TResult>;
 
 	/**
 	* Wrapped type `any[]`.