An experimental implementation of the Io language in Javascript.
Account := Object clone do(
balance := 0.0
deposit := method(v, balance = balance + v)
show := method(write("Account balance: $", balance, "\n"))
)
"Inital: " print
Account show
"Depositing $10\n" print
Account deposit(10.0)
"Final: " print
Account show
:warning: This is a hobby work in progress. :warning: many things are not yet implemented, and the API is subject to change.
To install globally, run:
npm install -g @nikso/tu
You can now start an interactive session with tu:
$ tu
⟩ a := 1 + 1
2
⟩ a + 40
42
You can also use Tu in the browser. To do so, you can use the tu.js file
in the dist folder. You can also use the tu.cjs file for CommonJS.
Alternatively, you can also use the index.mjs file in the root folder.
This is the same as the tu.js file, but it is written in ES6 modules.
<html>
<body>
<script type="module">
import { createEnvironment } from './index.mjs';
const env = createEnvironment();
window.Lobby = env.Lobby;
window.tu = env.tu;
const result = await tu`
a := 1 + 1
a + 40
`;
console.log(result); // 42
</script>
</body>
</html>
Clone this repository and run:
npm install to install the dependenciesnpm run build to build the project dependencies in distnpm run dev to serve the root folderhttp://localhost:3000 in your browsertuYou can also run npm link -g to get a tu command wich will use the local
version of the project.
lib/environment.js contains the createEnvironment function which
creates a new environment with the Lobby object and the tu function.lib/receiver.js contains the Receiver main object (called Object in Io),
as well as the definition of the Lobby object.lib/primitives.js have some low level implementation of javascript primitives
(like Number, String, Array, etc.) to get things rolling.lib/message.js is where the magic happens. It contains the Message object
which is used to represent the entirety of a Tu program. The special function
here is evalMessage that takes a Message and an start interpreting it in
the given context.lib/parser.js is a Ohm grammar that parses a Tu program
into a Message.Check out also some strip down, early versions of the project in the study
folder. Those should be more readable and easier to understand.
Recently evalMessage was made async, so that it can await on each message
allowing to write something like this:
fetch("https://jsonplaceholder.typicode.com/todos/1") json userId println
This works and I must say it's rather cool. Unfortunately it made the interpreter much slower.
My ideas for this project would be:
evalMessage to properly support all the
features of Io (in particular the stopStatus to allow for break, continue).<script lang="tu">
name := "World"
greeting := "Hello "..name.."!"
</script>
<div>
<input type="text" bind:value={name} />
<p>{greeting}</p>
</div>
study/try4 and
it seams promising. Compiled Tu would not need to maintain the dynamic nature
of Tu and it could be much more performant.Not sure if and when I'll ever get to do any of those things :P
FAQs
An implementation of the Io programming language in Javascript
The npm package @nikso/tu receives a total of 0 weekly downloads. As such, @nikso/tu popularity was classified as not popular.
We found that @nikso/tu demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
Did you know?
Socket for GitHub automatically highlights issues in each pull request and monitors the health of all your open source dependencies. Discover the contents of your packages and block harmful activity before you install or update your dependencies.
Research
Security News
Malicious PyPI package ‘set-utils’ steals Ethereum private keys by exfiltrating them through blockchain transactions via the Polygon RPC.
Research
Security News
Malicious Go packages are impersonating popular libraries to install hidden loader malware on Linux and macOS, targeting developers with obfuscated payloads.
Security News
Bybit's $1.46B hack by North Korea's Lazarus Group pushes 2025 crypto losses to $1.6B in just two months, already surpassing all of 2024's $1.49B total.