From fa5dbd8c6cb14b92bc42226275aadf8a1813f3b2 Mon Sep 17 00:00:00 2001
From: Liangzhen Zhu <zhudx6512@163.com>
Date: Thu, 27 Apr 2023 22:50:12 +0800
Subject: [PATCH] update `init` function type signature so it can be identical
 to document

---
 src/core/echarts.ts | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/core/echarts.ts b/src/core/echarts.ts
index a332312f3a..fe8fc38329 100644
--- a/src/core/echarts.ts
+++ b/src/core/echarts.ts
@@ -2638,8 +2638,8 @@ const DOM_ATTRIBUTE_KEY = '_echarts_instance_';
  * @param opts.useDirtyRect Enable dirty rectangle rendering or not.
  */
 export function init(
-    dom: HTMLElement,
-    theme?: string | object,
+    dom?: HTMLElement | null,
+    theme?: string | object | null,
     opts?: EChartsInitOpts
 ): EChartsType {
     const isClient = !(opts && opts.ssr);