https://github.com/r-unic/crystallizer

TypeScript to Crystal compiler. All the beauty and power of TypeScript, with all the speed and portability of Crystal.
https://github.com/r-unic/crystallizer

code-generation codegen compiler crystal transpiler ts typescript

Last synced: 3 months ago
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TypeScript to Crystal compiler. All the beauty and power of TypeScript, with all the speed and portability of Crystal.

• Host: GitHub
• URL: https://github.com/r-unic/crystallizer
• Owner: R-unic
• License: mit
• Created: 2023-08-31T09:16:02.000Z (over 1 year ago)
• Default Branch: master
• Last Pushed: 2024-03-28T23:56:14.000Z (10 months ago)
• Last Synced: 2024-10-04T21:31:58.107Z (4 months ago)
• Topics: code-generation, codegen, compiler, crystal, transpiler, ts, typescript
• Language: TypeScript
• Homepage:
• Size: 41.6 MB
• Stars: 4
• Watchers: 1
• Forks: 1
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
![build](https://github.com/R-unic/crystallizer/actions/workflows/test.yml/badge.svg)

# Crystallizer

A TypeScript to Crystal compiler. All the beauty and power of TypeScript, with the speed and portability of Crystal.

# Example

```ts

// examples/async-await/src/test.ts

async function myAsyncFunction(): Promise {

  return "Hello!";

}

async function main(): Promise {

  myAsyncFunction() // you can also use await here of course

    .then(res => console.log(res));

}

main();

```

```cr

# examples/async-await/dist/test.cr

private def myAsyncFunction : MiniFuture(String)

  async! do

    return "Hello!"

  end

end

private def main : MiniFuture(Nil)

  async! do

    myAsyncFunction.then do |res|

      puts(res)

    end

    return

  end

end

await main

```

# Usage

* All of the below instructions are temporary.

* You must have Crystal and TypeScript installed to be able to actually use it.

1. Clone the repository

2. Run `npm i && tsc`

3. Run `npm start ` to compile all TypeScript files inside of `` **OR** `npm start` to compile all TypeScript files inside your current working directory

# Todo

- cli:

  - watch mode

- codegen:

  - ignore advanced type generics (T extends, ternary operator, initializers) because Crystal doesn't support them

  - destructuring (this is so much harder than it needs to be, thanks TypeScript devs)

  - for..in (is this even necessary?)

  - macro the rest of the `console` library (warn, error, info, clear, etc.)

  - macro the `??` operator (`a != nil ? a : b`)

  - emit comments

  - disallow:

    - call expressions on arrow functions directly

    - type parameters in function types

- polyfills:

  - `String` (😭)

  - `Object`

  - `Promise`

- test:

  - `StringBuilder` class

  - commonly used utility functions

  - if statements with `else`/`elsif` branches