调用babel转换jsx语法的代码抽离成独立的函数

bin/render-to-html-string.js

@@ -1,9 +1,8 @@
 "use strict";
 
 var fs = require('fs');
-var babelCore = require('@babel/core');
 var reactDOMServer = require('react-dom/server');
-var beautifyJs = require('js-beautify/js').js;
+var transformJsxToJs = require('./transform-jsx-to-js');
 
 module.exports = renderToHtmlString;
 
@@ -26,30 +25,10 @@ function renderToHtmlString(jsxContent, options) {
   var deleteTempFile = !(options.deleteTempFile === false);
 
   // 转换 JSX 成 JS 脚本
-  var transformResult = babelCore.transformSync(jsxContent, {
-    "presets": [
-      [
-        "@babel/preset-react",
-        {
-          "pragma": "React.createElement",
-          "pragmaFrag": "React.Fragment",
-          "throwIfNamespace": true,
-          "runtime": "classic"
-        }
-      ]
-    ]
+  var jsContent = transformJsxToJs(jsxContent, {
+    prettyFormat: prettyFormat
   });
 
-  var jsContent = transformResult.code;
-  // 美化 JS 内容
-  if (prettyFormat) {
-    jsContent = beautifyJs(jsContent, {
-      indent_size: 2,
-      wrap_line_length: 120,
-      space_in_empty_paren: true
-    });
-  }
-
   // 写入 JS 内容到临时文件
   fs.writeFileSync(tempFilePath, jsContent);
   // 加载 JS 脚本

bin/transform-jsx-to-js.js

@@ -0,0 +1,48 @@
+"use strict";
+
+var babelCore = require('@babel/core');
+var beautifyJs = require('js-beautify/js').js;
+
+module.exports = transformJsxToJs;
+
+/**
+ * @description 转换 jsx 内容成 js 内容
+ * @param {string} jsxContent 
+ * @param {object} [options]
+ * @returns {string}
+ */
+function transformJsxToJs(jsxContent, options) {
+  if (jsxContent === null || jsxContent === undefined) {
+    return '';
+  }
+
+  options = (options || {});
+  var prettyFormat = (options.prettyFormat === true);
+
+  // 转换 JSX 成 JS 脚本
+  var transformResult = babelCore.transformSync(jsxContent, {
+    "presets": [
+      [
+        "@babel/preset-react",
+        {
+          "pragma": "React.createElement",
+          "pragmaFrag": "React.Fragment",
+          "throwIfNamespace": true,
+          "runtime": "classic"
+        }
+      ]
+    ]
+  });
+
+  var jsContent = transformResult.code;
+  // 美化 JS 内容
+  if (prettyFormat) {
+    jsContent = beautifyJs(jsContent, {
+      indent_size: 2,
+      wrap_line_length: 120,
+      space_in_empty_paren: true
+    });
+  }
+
+  return jsContent;
+}

package.json

@@ -1,6 +1,6 @@
 {
   "name": "jsx-render-to-html",
-  "version": "1.1.5",
+  "version": "1.1.6",
   "description": "转换 jsx 文件成 html 文件",
   "license": "MIT",
   "author": "mh.z",