From d0dc178e104e38c1804084a413fe8e9fde64bf1c Mon Sep 17 00:00:00 2001
From: Aaron <antvaaron@gmail.com>
Date: Wed, 14 Jan 2026 19:43:52 +0800
Subject: [PATCH] fix: register default font and optimize isBrowser

---
 src/utils/is-browser.ts   | 12 +++---------
 src/utils/measure-text.ts |  5 +----
 2 files changed, 4 insertions(+), 13 deletions(-)

diff --git a/src/utils/is-browser.ts b/src/utils/is-browser.ts
index 1d44fc9e0..f4a01fc66 100644
--- a/src/utils/is-browser.ts
+++ b/src/utils/is-browser.ts
@@ -1,18 +1,14 @@
-let _isBrowser: boolean | undefined;
+let IS_BROWSER: true | undefined;
 
 export function isBrowser(): boolean {
-  if (_isBrowser !== undefined) {
-    return _isBrowser;
-  }
+  if (IS_BROWSER) return true;
 
   if (typeof window === 'undefined' || typeof document === 'undefined') {
-    _isBrowser = false;
     return false;
   }
 
   const body = document.body;
   if (!body) {
-    _isBrowser = false;
     return false;
   }
 
@@ -47,7 +43,6 @@ export function isBrowser(): boolean {
   }
 
   if (!hasRealLayout) {
-    _isBrowser = false;
     return false;
   }
 
@@ -59,7 +54,6 @@ export function isBrowser(): boolean {
 
     const ctx = canvas.getContext('2d');
     if (!ctx) {
-      _isBrowser = false;
       return false;
     }
 
@@ -74,6 +68,6 @@ export function isBrowser(): boolean {
     hasRealCanvas = false;
   }
 
-  _isBrowser = hasRealCanvas;
+  if (hasRealCanvas) IS_BROWSER = hasRealCanvas;
   return hasRealCanvas;
 }
diff --git a/src/utils/measure-text.ts b/src/utils/measure-text.ts
index 961296604..d22b6daaa 100644
--- a/src/utils/measure-text.ts
+++ b/src/utils/measure-text.ts
@@ -4,7 +4,6 @@ import { JSXNode, TextProps } from '../jsx';
 import { DEFAULT_FONT } from '../renderer';
 import { encodeFontFamily } from './font';
 import { isBrowser } from './is-browser';
-import { isNode } from './is-node';
 
 let FONT_EXTEND_FACTOR = 1.01;
 
@@ -12,9 +11,7 @@ export const setFontExtendFactor = (factor: number) => {
   FONT_EXTEND_FACTOR = factor;
 };
 
-if (isNode) {
-  registerFont(AlibabaPuHuiTi);
-}
+registerFont(AlibabaPuHuiTi);
 
 let canvasContext: CanvasRenderingContext2D | null = null;
 let measureSpan: HTMLSpanElement | null = null;