https://github.com/reactiverse/es4x

🚀 fast JavaScript 4 Eclipse Vert.x
https://github.com/reactiverse/es4x

graaljs graalvm hacktoberfest2021 java javascript language-support typescript typescript-definitions vertx

Last synced: 2 months ago
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🚀 fast JavaScript 4 Eclipse Vert.x

• Host: GitHub
• URL: https://github.com/reactiverse/es4x
• Owner: reactiverse
• License: apache-2.0
• Created: 2018-03-14T14:30:19.000Z (over 7 years ago)
• Default Branch: develop
• Last Pushed: 2025-04-05T17:43:06.000Z (3 months ago)
• Last Synced: 2025-05-01T00:04:58.892Z (3 months ago)
• Topics: graaljs, graalvm, hacktoberfest2021, java, javascript, language-support, typescript, typescript-definitions, vertx
• Language: Java
• Homepage: https://reactiverse.io/es4x/
• Size: 55.4 MB
• Stars: 889
• Watchers: 23
• Forks: 74
• Open Issues: 50
• Metadata Files:
  • Readme: README.md
  • Changelog: CHANGELOG.md
  • Contributing: CONTRIBUTING.md
  • License: LICENSE
  • Code of conduct: CODE_OF_CONDUCT.md

Awesome Lists containing this project

• awesome-list - es4x
• vertx-awesome - EcmaScript - EcmaScript >=6 (JavaScript) support. (Language Support)

README

        
# ES4X

This is the EcmaScript (5.1+) language support for [Eclipse Vert.x](http://vertx.io)

[![CI](https://github.com/reactiverse/es4x/actions/workflows/java.yml/badge.svg?branch=develop)](https://github.com/reactiverse/es4x/actions/workflows/java.yml)

[![Join the chat at https://gitter.im/es4x/Lobby](https://badges.gitter.im/es4x/Lobby.svg)](https://gitter.im/es4x/Lobby?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)

[![Security Status](https://snyk-widget.herokuapp.com/badge/mvn/io.reactiverse/es4x/badge.svg)](https://snyk.io/vuln/maven:io.reactiverse:es4x?utm_medium=referral&utm_source=badge&utm_campaign=snyk-widget)

## Why?

[![10 things I've learned making the fastest JS runtime in the world](https://img.youtube.com/vi/JUJ85k3aEg4/0.jpg)](https://www.youtube.com/watch?v=JUJ85k3aEg4)

JavaScript is fast, and this is the way to make it even faster 🚀🚀🚀

## Usage

Create a project:

```

# create a generic project

mkdir my-app

cd my-app

# init the project

npm init @es4x project

# add other dependencies...

npm install @vertx/unit --save-dev

npm install @vertx/core --save-prod

# will trigger the download

# of the java dependencies

npm install

```

Create your `index.js`:

```js

/// 

// @ts-check

vertx

  .createHttpServer()

  .requestHandler(function (req) {

    req.response().end("Hello!");

  })

  .listen(8080);

console.log('Server listening at: http://localhost:8080/');

```

and your `index.test.js`:

```js

import { TestSuite } from '@vertx/unit';

const suite = TestSuite.create("the_test_suite");

suite.test("my_test_case", function (context) {

  var s = "value";

  context.assertEquals("value", s);

});

suite.run();

```

```bash

npm start

```

Profit!

## Documentation

For more documentation please see [docs](./docs).