https://github.com/griffio/spring-boot-web-nashorn

Feasibility of rendering React 16.x templates from Nashorn with babel-standalone, with Spring Boot and Kotlin
https://github.com/griffio/spring-boot-web-nashorn

kotlin nashorn react rendering-react spring-boot

Last synced: 8 days ago
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Feasibility of rendering React 16.x templates from Nashorn with babel-standalone, with Spring Boot and Kotlin

• Host: GitHub
• URL: https://github.com/griffio/spring-boot-web-nashorn
• Owner: griffio
• Created: 2015-04-01T20:25:22.000Z (over 9 years ago)
• Default Branch: master
• Last Pushed: 2018-02-21T11:55:34.000Z (over 6 years ago)
• Last Synced: 2024-04-16T18:27:03.226Z (7 months ago)
• Topics: kotlin, nashorn, react, rendering-react, spring-boot
• Language: Kotlin
• Homepage:
• Size: 363 KB
• Stars: 27
• Watchers: 6
• Forks: 7
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
## Render React template from Nashorn

This is just an experiment tracking the feasibility of using v.latest React in Nashorn.

Recent Spring Developer presentation: [isomorphic-templating-with-spring-boot-nashorn-and-react](http://www.slideshare.net/SpringCentral/isomorphic-templating-with-spring-boot-nashorn-and-react)

React 16.1.x

0.13.x leaned on JSX Transformer to perform standalone JSX translation; this was removed in current React versions.

A BabelJs environment is needed to compile JSX.

However, BabelJs also needs NodeJs environment, so use a babel-standalone that bundles all required modules.

### Now in 4.2.0.RELEASE

[Jira SPR-12266](https://jira.spring.io/browse/SPR-12266)

[Spring Framework SPR-12266](https://github.com/sdeleuze/spring-framework/tree/SPR-12266)

Use jdk-8u72-ea or higher. https://jdk8.java.net/download.html

Early access fix for: Method code too large in Babel - https://bugs.openjdk.java.net/browse/JDK-8135190

Note:- this is also the case with Typescript https://github.com/Microsoft/TypeScript/issues/1789

### Spring Boot with ReactJs templates with Nashorn and Kotlin 1.2.x

React 16.1.x requires BabelJs environment to compile JSX

BabelJs requires nodejs api dependencies.

However, a stand-alone build of Babel for use in non-Node.js environments used as https://babeljs.io/docs/usage/browser/ now removed.

https://github.com/Daniel15/babel-standalone

The package create-react-class is used as Java8 Nashorn is ECMAScript 5.x as per https://reactjs.org/docs/react-without-es6.html

[Nashorn Extensions](https://wiki.openjdk.java.net/display/Nashorn/Nashorn+extensions) - allow map support

~~~javascript

global = {};

console = {};

console.debug = print;

console.warn = print;

console.log = print;

console.error = print;

function render(template, model) {

    var data = {};

    for (var k in model) {

        if (model[k] instanceof Java.type("java.lang.Iterable")) {

             data[k] = Java.from(model[k]);

        } else {

            data[k] = model[k];

        }

    }

    var element = React.createElement(eval(template), data);

    return ReactDOMServer.renderToStaticMarkup(element);

}

function renderJsx(template, model) {

    var jsTemplate = Babel.transform(template, { presets: ['react'] }).code;

    return render(jsTemplate, model);

}

~~~

[Notes on Spring Boot](http://docs.spring.io/spring-boot/docs/current/reference/html/howto-spring-boot-application.html)

Test with JDK 

~~~

./gradlew test

~~~

Application

~~~

./gradlew bootRun

~~~

Route

http://localhost:8080/about.html

Rendered from

https://github.com/griffio/spring-boot-web-nashorn/blob/master/src/main/resources/templates/about.jsx

==============

### Kotlin 1.2.x

kotlin_version=1.2.21

basic gradle (4.x) build template for Java 8