Elysion

Elysion is a coding language made to compile implicit yet readable code to pure, modern JavaScript. Since Elysion is just a compiler for JavaScript, it can handle and compile expressions of both languages.

This package is still under development, and is not recommended to be used in production. Some parts of JavaScript are still not supported.

Overview

Elysion

MyTypes as '', 1, false, null, foo: \bar

for index, value in MyTypes
  _type = typeof value

  console.log `${_type} value at #${index}`

JavaScript output

let MyTypes, index, value, _type, _j;

MyTypes = ['', 1, false, null, { foo: "bar" }];

for (index in (_j = MyTypes)) {
  value = _j[index];

  _type = typeof value;

  console.log(`${_type} value at #${index}`);
}

Installation

With Node.js

# for local development...
npm install --save-dev elysion

# if you'd like to use 'els' command globally...
npm install -g elysion

Usage

Command Line Interface

# with `.elsconfig`
els

# compile a file manually
els -c path/to/file.els

# compile a directory
els -c path/to/folder path/to/destination

On Node.js

const Elysion = require('elysion');

// prints "hello('world!');"
console.log(
  Elysion.compile("hello 'world!'").output
);

// ---------

// parse an ELSON file
var elson = require('fs')
  .readFileSync('path/to/.elson', { encoding: 'utf-8' });

console.log(
  Elysion.toJSON(elson)
)

References

Structure of a .elsconfig file

(.elsconfig has the syntax of an .elson file)

Do not place newlines between properties, or the file will be treated as an array.

sourceDir: 'path/to/folder'
# or...
sourceRoot: 'path/to/root' # optional
files:
  'my-file.src'
  'another-file.src'
# -----
compilerOptions:
  # whether you want a source map to be generated
  sourceMaps: yes or no
  # whether to place the source map as a data URI 
  # or generate a '.js.map' file containing the map
  inlineMap: yes or no
  # the output directory for all scripts
  # use '@' for same directory
  outDir: 'path/to/destination'
  # the extension of the output files
  # if .elson, the output will be .json
  # set to '.els.js' by default
  outExtension: '.js'
  # -----------------
  # --- For TypeScript support (still working on it)
  # -----------------
  # whether the output will be a TypeScript file
  # (only for files containing typed expressions) 
  preserveTS: yes or no
  # skip all diagnostics if there's any
  # if false, the file will not be compiled
  # if there's any error
  omitDiagnostics: yes or no