eduardsui / jib.js

A lightweight javascript run-time environment, with node.js compatiblity in mind

jib.js

Jib.js is a lightweight javascript run-time environment, designed to be easily embedded into other applications. It uses mostly standard C functions and some POSIX functions.

Its objectives are:

• small footprint
• easily embeddable
• portable
• no dependecies
• node.js compatiblity
• to be usable as a shell interpreter

It may store all .js modules inside the library/executable (see src/modules.h), external I/O being optional.

It currently supports: fs, net, tls, crypto, path, http, https, url, querystringify, events and Promises.

jib.js uses duktape(default) or quickjs as interpreter.

Compiling

Linux & BSD:

$ ./build_unix.sh

Windows:

build_win32.bat

macOS:

$ ./build_macOS.sh

esp32:

$ cd esp32
$ idf.py build

Examples

Run a simple web server on localhost on port 8080:

$ ./jib examples/server.js

Simple hello world (from node.js website):

const http = require('http');

const hostname = '127.0.0.1';
const port = 3000;

const server = http.createServer(function(req, res) {
  res.statusCode = 200;
  res.setHeader('Content-Type', 'text/plain');
  res.end('Hello World\n');
});

server.listen(port, hostname, function() {
  console.log(`Server running at http://${hostname}:${port}/`);
});

It also supports streams:

// ...
  var readStream = fs.createReadStream("." + pathname);
  readStream.on('open', function () {
    readStream.pipe(res);
  });

  readStream.on('error', function(err) {
    res.statusCode = 404;
    res.end(err.toString());
  });
// ...

License

Where not specified public domain applies. Some sources from third parties are under BSD, MIT or Apache.