From 910afe3f5923e1bb39ad15b960a9d9770cc0b94b Mon Sep 17 00:00:00 2001
From: Stephen Haberman <shaberman@homebound.com>
Date: Mon, 25 Nov 2024 08:32:38 -0600
Subject: [PATCH] fix: Simplify keyBy type.

---
 src/array/keyBy.ts | 12 +++++-------
 1 file changed, 5 insertions(+), 7 deletions(-)

diff --git a/src/array/keyBy.ts b/src/array/keyBy.ts
index 7664c4d..53e726c 100644
--- a/src/array/keyBy.ts
+++ b/src/array/keyBy.ts
@@ -14,13 +14,11 @@ declare global {
   }
 }
 
-Array.prototype.keyBy = function <
-  T,
-  K extends PropertyKey,
-  TK extends keyof T,
-  TKK extends T[TK] extends K ? TK : never,
-  Y = T,
->(this: T[], fnOrKey: CallbackFn<T, K> | TKK, valueFn?: CallbackFn<T, Y>) {
+Array.prototype.keyBy = function <T, K extends PropertyKey, Y = T>(
+  this: T[],
+  fnOrKey: CallbackFn<T, K> | keyof T[][number],
+  valueFn?: CallbackFn<T, Y>,
+) {
   const result = {} as Record<K, Y>;
   const fn = typeof fnOrKey === "function" ? fnOrKey : (x: T) => x[fnOrKey] as K;
   this.forEach((e, i, a) => {