From 72237c8317131c9c454e3a55e2d2f77e2ced9cc1 Mon Sep 17 00:00:00 2001
From: Paul Selden <paul.selden@openx.com>
Date: Fri, 10 Nov 2017 12:16:51 -0500
Subject: [PATCH] [history] Add overloads for History.block

History.block also accepts a string or a function which is used to determine the prompt.
---
 types/history/index.d.ts | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/types/history/index.d.ts b/types/history/index.d.ts
index 528ab7ff21..eb15aaa0fc 100644
--- a/types/history/index.d.ts
+++ b/types/history/index.d.ts
@@ -18,7 +18,7 @@ export interface History {
     go(n: number): void;
     goBack(): void;
     goForward(): void;
-    block(prompt?: boolean): UnregisterCallback;
+    block(prompt?: boolean | string | TransitionPromptHook): UnregisterCallback;
     listen(listener: LocationListener): UnregisterCallback;
     createHref(location: LocationDescriptorObject): Href;
 }
@@ -48,6 +48,7 @@ export namespace History {
     export type Pathname = string;
     export type Search = string;
     export type TransitionHook = (location: Location, callback: (result: any) => void) => any;
+    export type TransitionPromptHook = (location: Location, action: Action) => string | false | void;
     export type Hash = string;
     export type Href = string;
 }
@@ -60,6 +61,7 @@ export type Path = History.Path;
 export type Pathname = History.Pathname;
 export type Search = History.Search;
 export type TransitionHook = History.TransitionHook;
+export type TransitionPromptHook = History.TransitionPromptHook;
 export type Hash = History.Hash;
 export type Href = History.Href;