From eaaab30442e6d4206d03c7fe0961b37e7ca51424 Mon Sep 17 00:00:00 2001
From: Brian Helba <brian.helba@kitware.com>
Date: Wed, 4 May 2022 15:18:57 -0400
Subject: [PATCH] Fix TS definition for AxiosRequestTransformer (#4201)

The callback `AxiosRequestTransformer` can always expect its `headers`
parameter to be defined. This is ensured immediately before the callback
is made.
See: https://github.com/axios/axios/blob/1025d1231a7747503188459dd5a6d1effdcea928/lib/core/dispatchRequest.js#L32-L40

Co-authored-by: Jay <jasonsaayman@gmail.com>
---
 index.d.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/index.d.ts b/index.d.ts
index 8ab8e51..54610e3 100644
--- a/index.d.ts
+++ b/index.d.ts
@@ -6,7 +6,7 @@ export type AxiosResponseHeaders = Record<string, string> & {
 };
 
 export interface AxiosRequestTransformer {
-  (data: any, headers?: AxiosRequestHeaders): any;
+  (data: any, headers: AxiosRequestHeaders): any;
 }
 
 export interface AxiosResponseTransformer {