fix: mathjax script duplicate with multiple cherry instances

Fixed #73
Tencent · Jan 6, 2022 · 5ba3ddd · 5ba3ddd
1 parent a1fb8b1
commit 5ba3ddd
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Showing 3 changed files with 12 additions and 1 deletion.
diff --git a/package.json b/package.json
@@ -79,6 +79,7 @@
     "@types/jest": "^27.0.3",
     "@types/jsdom": "^16.2.13",
     "@types/lodash": "^4.14.170",
+    "@types/mathjax": "^0.0.37",
     "@types/mermaid": "^8.2.6",
     "@types/virtual-dom": "^2.1.0",
     "@typescript-eslint/eslint-plugin": "^4.27.0",

diff --git a/src/Engine.js b/src/Engine.js
@@ -55,12 +55,17 @@ export default class Engine {
 
   initMath(opts) {
     // 无论MathJax还是Katex，都可以先进行MathJax配置
-    const { syntax } = opts.engine;
+    const { externals, engine } = opts;
+    const { syntax } = engine;
     const { plugins } = syntax.mathBlock;
     // 未开启公式
     if (!isBrowser() || (!syntax.mathBlock.src && !syntax.inlineMath.src)) {
       return;
     }
+    // 已经加载过MathJax
+    if (externals.MathJax || window.MathJax) {
+      return;
+    }
     configureMathJax(plugins);
     // 等待MathJax各种插件加载
     const script = document.createElement('script');

diff --git a/yarn.lock b/yarn.lock
@@ -1700,6 +1700,11 @@
   resolved "https://registry.npmjs.org/@types/lodash/-/lodash-4.14.178.tgz#341f6d2247db528d4a13ddbb374bcdc80406f4f8"
   integrity sha512-0d5Wd09ItQWH1qFbEyQ7oTQ3GZrMfth5JkbN3EvTKLXcHLRDSXeLnlvlOn0wvxVIwK5o2M8JzP/OWz7T3NRsbw==
 
+"@types/mathjax@^0.0.37":
+  version "0.0.37"
+  resolved "https://registry.npmjs.org/@types/mathjax/-/mathjax-0.0.37.tgz#31a0076ced55c2e12da75edb44db45098b6feed6"
+  integrity sha512-y0WSZBtBNQwcYipTU/BhgeFu1EZNlFvUNCmkMXV9kBQZq7/o5z82dNVyH3yy2Xv5zzeNeQoHSL4Xm06+EQiH+g==
+
 "@types/mermaid@^8.2.6":
   version "8.2.7"
   resolved "https://registry.npmjs.org/@types/mermaid/-/mermaid-8.2.7.tgz#1f9610c241361f66ed0591d3186e0bf3ed2211c8"