From 8d1271b49fc226ed7defd07cd577bd69a55bb13a Mon Sep 17 00:00:00 2001
From: Tibor Pilz <tbrpilz@googlemail.com>
Date: Tue, 30 Dec 2025 12:58:26 +0100
Subject: [PATCH] fix(types): add handlers to AxiosInterceptorManager interface
 (#5551)

* fix(types): add handlers to AxiosInterceptorManager interface

* fix: runwhen should be optional

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* chore: make handlers optional

* chore: optional handlers

---------

Co-authored-by: Tibor Pilz <tibor.pilz@iu.org>
Co-authored-by: Jay <jasonsaayman@gmail.com>
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
---
 index.d.cts | 22 ++++++++++++++++++++--
 index.d.ts  | 22 ++++++++++++++++++++--
 2 files changed, 40 insertions(+), 4 deletions(-)

diff --git a/index.d.cts b/index.d.cts
index e3a06a37..4be32f9c 100644
--- a/index.d.cts
+++ b/index.d.cts
@@ -515,14 +515,32 @@ declare namespace axios {
     runWhen?: (config: InternalAxiosRequestConfig) => boolean;
   }
 
-  type AxiosRequestInterceptorUse<T> = (onFulfilled?: ((value: T) => T | Promise<T>) | null, onRejected?: ((error: any) => any) | null, options?: AxiosInterceptorOptions) => number;
+  type AxiosInterceptorFulfilled<T> = (value: T) => T | Promise<T>;
+  type AxiosInterceptorRejected = (error: any) => any;
 
-  type AxiosResponseInterceptorUse<T> = (onFulfilled?: ((value: T) => T | Promise<T>) | null, onRejected?: ((error: any) => any) | null) => number;
+  type AxiosRequestInterceptorUse<T> = (
+    onFulfilled?: AxiosInterceptorFulfilled<T> | null,
+    onRejected?: AxiosInterceptorRejected | null,
+    options?: AxiosInterceptorOptions
+  ) => number;
+
+  type AxiosResponseInterceptorUse<T> = (
+    onFulfilled?: AxiosInterceptorFulfilled<T> | null,
+    onRejected?: AxiosInterceptorRejected | null
+  ) => number;
+
+  interface AxiosInterceptorHandler<T> {
+    fulfilled: AxiosInterceptorFulfilled<T>;
+    rejected?: AxiosInterceptorRejected;
+    synchronous: boolean;
+    runWhen?: (config: AxiosRequestConfig) => boolean;
+  }
 
   interface AxiosInterceptorManager<V> {
     use: V extends AxiosResponse ? AxiosResponseInterceptorUse<V> : AxiosRequestInterceptorUse<V>;
     eject(id: number): void;
     clear(): void;
+    handlers?: Array<AxiosInterceptorHandler<V>>;
   }
 
   interface AxiosInstance extends Axios {
diff --git a/index.d.ts b/index.d.ts
index ff29215f..c562d9c0 100644
--- a/index.d.ts
+++ b/index.d.ts
@@ -494,14 +494,32 @@ export interface AxiosInterceptorOptions {
   runWhen?: (config: InternalAxiosRequestConfig) => boolean;
 }
 
-type AxiosRequestInterceptorUse<T> = (onFulfilled?: ((value: T) => T | Promise<T>) | null, onRejected?: ((error: any) => any) | null, options?: AxiosInterceptorOptions) => number;
+type AxiosInterceptorFulfilled<T> = (value: T) => T | Promise<T>;
+type AxiosInterceptorRejected = (error: any) => any;
 
-type AxiosResponseInterceptorUse<T> = (onFulfilled?: ((value: T) => T | Promise<T>) | null, onRejected?: ((error: any) => any) | null) => number;
+type AxiosRequestInterceptorUse<T> = (
+  onFulfilled?: AxiosInterceptorFulfilled<T> | null,
+  onRejected?: AxiosInterceptorRejected | null,
+  options?: AxiosInterceptorOptions
+) => number;
+
+type AxiosResponseInterceptorUse<T> = (
+  onFulfilled?: AxiosInterceptorFulfilled<T> | null,
+  onRejected?: AxiosInterceptorRejected | null
+) => number;
+
+interface AxiosInterceptorHandler<T> {
+  fulfilled: AxiosInterceptorFulfilled<T>;
+  rejected?: AxiosInterceptorRejected;
+  synchronous: boolean;
+  runWhen: (config: AxiosRequestConfig) => boolean | null;
+}
 
 export interface AxiosInterceptorManager<V> {
   use: V extends AxiosResponse ? AxiosResponseInterceptorUse<V> : AxiosRequestInterceptorUse<V>;
   eject(id: number): void;
   clear(): void;
+  handlers?: Array<AxiosInterceptorHandler<V>>;
 }
 
 export class Axios {