From 8668c5e269e144ad76eeff99dd66255411cd4738 Mon Sep 17 00:00:00 2001
From: rocktimsaikia <srocktim61@gmail.com>
Date: Tue, 6 Oct 2020 23:57:43 +0530
Subject: [PATCH] update the assertion for plainObject

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

diff --git a/source/index.ts b/source/index.ts
index e4f483e..67004d0 100644
--- a/source/index.ts
+++ b/source/index.ts
@@ -591,7 +591,7 @@ export const assert: Assert = {
 	primitive: (value: unknown): asserts value is Primitive => assertType(is.primitive(value), AssertionTypeDescription.primitive, value),
 	integer: (value: unknown): asserts value is number => assertType(is.integer(value), AssertionTypeDescription.integer, value),
 	safeInteger: (value: unknown): asserts value is number => assertType(is.safeInteger(value), AssertionTypeDescription.safeInteger, value),
-	plainObject: <Value = unknown>(value: unknown): asserts value is Record<string, Value> => assertType(is.plainObject(value), AssertionTypeDescription.plainObject, value),
+	plainObject: <Value = unknown, Key extends keyof any = string | number | symbol>(value: unknown): asserts value is Record<Key, Value> => assertType(is.plainObject(value), AssertionTypeDescription.plainObject, value),
 	typedArray: (value: unknown): asserts value is TypedArray => assertType(is.typedArray(value), AssertionTypeDescription.typedArray, value),
 	arrayLike: <T = unknown>(value: unknown): asserts value is ArrayLike<T> => assertType(is.arrayLike(value), AssertionTypeDescription.arrayLike, value),
 	domElement: (value: unknown): asserts value is HTMLElement => assertType(is.domElement(value), AssertionTypeDescription.domElement, value),