From cc41c14a0056d644ecb11eeb148d67ef1004cc7b Mon Sep 17 00:00:00 2001
From: Wessel van der Linden <wesselvanderlinden@users.noreply.github.com>
Date: Fri, 20 Dec 2019 07:22:20 +0100
Subject: [PATCH] Update Postprocessor definition (#41132)

---
 types/nearley/index.d.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/types/nearley/index.d.ts b/types/nearley/index.d.ts
index 6bda98332c..b8d9b33b1a 100644
--- a/types/nearley/index.d.ts
+++ b/types/nearley/index.d.ts
@@ -83,7 +83,7 @@ export interface ParserRule {
     postprocess?: Postprocessor;
 }
 
-export type Postprocessor = (data: any[], reference: number, wantedBy: {}) => void;
+export type Postprocessor = (data: any[], reference?: number, wantedBy?: {}) => void;
 
 export interface Lexer {
     /**