From 38906f04ee73b6f27d5ba06f05705899859c7c7c Mon Sep 17 00:00:00 2001
From: akabeko <akabekobeko@gmail.com>
Date: Fri, 2 Jul 2021 23:06:59 +0900
Subject: [PATCH] fix: Fixed an issue that caused an error if Object was null
 for `vfm`

---
 src/plugins/metadata.ts | 2 +-
 tests/metadata.test.ts  | 4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/plugins/metadata.ts b/src/plugins/metadata.ts
index 85584dc..1a8ed1e 100644
--- a/src/plugins/metadata.ts
+++ b/src/plugins/metadata.ts
@@ -216,7 +216,7 @@ const readAttributesCollection = (
  * @returns Settings.
  */
 const readSettings = (data: any): VFMSettings => {
-  if (typeof data !== 'object') {
+  if (data === null || typeof data !== 'object') {
     return { toc: false };
   }
 
diff --git a/tests/metadata.test.ts b/tests/metadata.test.ts
index eb9b403..50ec2e6 100644
--- a/tests/metadata.test.ts
+++ b/tests/metadata.test.ts
@@ -273,10 +273,10 @@ Text
 
 it('Specify null or empty string for Object', () => {
   const md = `---
-html:
+html: ''
 meta:
   -
-vfm: ''
+vfm:
 ---
 `;
   const received = stringify(md);