From 9ea8d9ca285368c9ba70498df555eb0ea3138a96 Mon Sep 17 00:00:00 2001
From: Nick Zelei <nick.zelei@garmin.com>
Date: Mon, 27 Jun 2016 08:39:58 -0500
Subject: [PATCH] added in custom error classes

added in the custom error classes that are used for the verify tokens.
---
 jsonwebtoken/jsonwebtoken.d.ts | 20 +++++++++++++++++++-
 1 file changed, 19 insertions(+), 1 deletion(-)

diff --git a/jsonwebtoken/jsonwebtoken.d.ts b/jsonwebtoken/jsonwebtoken.d.ts
index da2fb3b99a..201d351a7a 100644
--- a/jsonwebtoken/jsonwebtoken.d.ts
+++ b/jsonwebtoken/jsonwebtoken.d.ts
@@ -7,6 +7,24 @@
 
 declare module "jsonwebtoken" {
 
+    export class JsonWebTokenError extends Error {
+        inner: Error;
+
+        constructor(message: string, error?: Error);
+    }
+
+    export class TokenExpiredError extends JsonWebTokenError {
+        expiredAt: number;
+
+        constructor(message: string, expiredAt: number);
+    }
+
+    export class NotBeforeError extends JsonWebTokenError {
+        date: Date;
+
+        constructor(message: string, date: Date);
+    }
+
     export interface SignOptions {
         /**
          * Signature algorithm. Could be one of these values :
@@ -53,7 +71,7 @@ declare module "jsonwebtoken" {
     }
 
     export interface VerifyCallback {
-        (err: Error, decoded: any): void;
+        (err: JsonWebTokenError | TokenExpiredError | NotBeforeError, decoded: any): void;
     }
 
     export interface SignCallback {