From d748301c79d0bfb8c2b63d442bf0eca1fad64681 Mon Sep 17 00:00:00 2001
From: Leon Song <sxwei123@users.noreply.github.com>
Date: Sun, 3 Jan 2021 10:12:35 +0800
Subject: [PATCH] Improve comparator function typing

---
 index.d.ts | 20 ++++++++++++++++++--
 1 file changed, 18 insertions(+), 2 deletions(-)

diff --git a/index.d.ts b/index.d.ts
index 23e46ca..953b398 100644
--- a/index.d.ts
+++ b/index.d.ts
@@ -1,4 +1,20 @@
-declare module 'fast-json-stable-stringify' {
-  function stringify(obj: any): string;
+declare module "fast-json-stable-stringify" {
+  interface KeyValue {
+    key: string;
+    value: any;
+  }
+
+  type ComparatorFunction = (a: KeyValue, b: KeyValue) => number;
+
+  function stringify(
+    obj: any,
+    opts?:
+      | {
+          cmp?: ComparatorFunction;
+          cycles?: boolean;
+        }
+      | ComparatorFunction
+  ): string;
+
   export = stringify;
 }