如何运行babel.transform与Nashorn做出反应？

Question

我试图用babel.transform而不是JSXTranformer反应.

...
ScriptEngineManager mgr = new ScriptEngineManager();
ScriptEngine nashorn = mgr.getEngineByName("nashorn");
nashorn.eval("var process = {env:{}}"); // node-modules expect that
nashorn.eval(getScript("com/facebook/babel/jvm-npm.js"));
babel = (JSObject) nashorn.eval("require('babel');");
...

Babel和babel-core安装为全局节点模块,我有一个错误:

Testsuite:com.my.app.BabelTransformerTest
找不到模块./lib/api/node.js
无法加载模块babel-core LOAD_ERROR
无法加载模块babel LOAD_ERROR
无法加载模块babel-core LOAD_ERROR
无法加载模块babel LOAD_ERROR
无法找到模块./ lib/api/node.js
无法加载模块babel-core LOAD_ERROR
无法加载模块babel LOAD_ERROR

该./lib/api/node.js中有C:\Users\***\AppData\Roaming\npm\node_modules

我听说有可能babel.transform从Nashorn出发吗？

也许有办法只加载某个babel模块作为JavaScript文件？

Answer 1

我使用以下脚本在jdk1.8.0_45中使用Babel Standalone:

FileReader babelScript = new FileReader("babel.js");
ScriptEngine engine = new ScriptEngineManager().getEngineByMimeType("text/javascript");

SimpleBindings bindings = new SimpleBindings();
engine.eval(babelScript, bindings);

bindings.put("input", "<Component />");
Object output = engine.eval("Babel.transform(input, { presets: ['react'] }).code", bindings);
System.out.println(output);

哪个回报:

React.createElement(Component, null);

es2015预设也可以使用.