Jsonnet in Wasm

This project aim to running Jsonnet in Wasm. The code is written in Rust and compiled to Wasm using the wasm32-unknown-unknown target. The project is based on the Jrsonnet project, which is a Rust implementation of Jsonnet. The project is still in early stage and have some limited support for Jsonnet.

Available features

- [x] Jsonnet Snippet evaluation
- [x] External variable support
- [x] External function support
- [x] Jsonnet file evaluation

Usage

``bash
npm install arakoo-jsonnet
`

$3

`javascript
import Jsonnet from "arakoo-jsonnet";

const jsonnet = new Jsonnet();
let code =
local username = std.extVar('name');
local Person(name='Alice') = {
name: name,
welcome: 'Hello ' + name + '!',
};
{
person1: Person(username),
person2: Person('Bob'),
};
const result = jsonnet.extString("name", "John").evaluateSnippet(code);
console.log(result);
`

$3

`json
{
"person1": {
"name": "John",
"welcome": "Hello John!"
},
"person2": {
"name": "Bob",
"welcome": "Hello Bob!"
}
}
`

$3

`javascript
import Jsonnet from "arakoo-jsonnet";

let jsonnet = new Jsonnet();
function addSomeNumber(a, b, c) {
return a + b + c;
}
let result = jsonnet.javascriptCallback("addSomeNumber", addSomeNumber).evaluateSnippet({
result : arakoo.native("addSomeNumber")(3,4,5)
});
`

First you need to register the javascript function you wish to call from jsonnet by calling javascriptCallback method of jsonnet instance . Then you can call the registered function by using arakoo.native method.

$3

`json
{
"result": "12"
}
`

> Note -
>
> 1. You can only return string from the function which you are calling from jsonnet . If you need to return any other type than you can JSON.stringify it and then std.parseJson in jsonnet.
> 2. You need to add --experimental-wasm-modules flag while running the js file where you imported / required this jsonnet package

Build

`bash
./build.sh
``