From 5078f174a6d5ae990459592f2b7de6b025be0521 Mon Sep 17 00:00:00 2001
From: marcosnocetti <marcos.nocetti@ubots.com.br>
Date: Thu, 9 Apr 2026 22:41:24 -0300
Subject: [PATCH] fix(types): constrain AxiosHeaders index signature from any
 to AxiosHeaderValue

Changes `[key: string]: any` to `[key: string]: AxiosHeaderValue | ((...args: any[]) => any)`
in the AxiosHeaders class definition. This prevents assigning invalid types like
Promise or plain objects to headers while maintaining compatibility with class methods.

Closes #7487
---
 index.d.cts | 2 +-
 index.d.ts  | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/index.d.cts b/index.d.cts
index f36ef066..b6a5f7c0 100644
--- a/index.d.cts
+++ b/index.d.cts
@@ -46,7 +46,7 @@ type BrowserProgressEvent = any;
 declare class AxiosHeaders {
   constructor(headers?: RawAxiosHeaders | AxiosHeaders | string);
 
-  [key: string]: any;
+  [key: string]: axios.AxiosHeaderValue | ((...args: any[]) => any);
 
   set(
     headerName?: string,
diff --git a/index.d.ts b/index.d.ts
index d3f646ea..8311a5a5 100644
--- a/index.d.ts
+++ b/index.d.ts
@@ -23,7 +23,7 @@ type AxiosHeaderParser = (this: AxiosHeaders, value: AxiosHeaderValue, header: s
 export class AxiosHeaders {
   constructor(headers?: RawAxiosHeaders | AxiosHeaders | string);
 
-  [key: string]: any;
+  [key: string]: AxiosHeaderValue | ((...args: any[]) => any);
 
   set(
     headerName?: string,