node-jsonnet

This is an updated fork of the NPM jsonnet package.

jsonnet is a DSL for JSON. Jsonnet is created by Google.

This module is a Jsonnet wrapper for Node.js created with Emscripten.

Install

$ npm install @unboundedsystems/jsonnet

A Typescript definition file is included, so no need to install anything from @types

Usage

const jsonnet = require('@unboundedsystems/jsonnet');

const myTemplate = `
{
    person1: {
        name: "Alice",
        welcome: "Hello " + self.name + "!",
    },
    person2: self.person1 { name: "Bob" },
}`;

// You only need to create one Jsonnet object and can then call eval()
// repeatedly.
const jsonnetVm = new jsonnet.Jsonnet();
const output = jsonnetVm.eval(myTemplate);

console.log(JSON.stringify(output, null, 2));

// The jsonnetVm object needs to be destroyed manually.
jsonnetVm.destroy();

Output:

{
   "person1": {
      "name": "Alice",
      "welcome": "Hello Alice!"
   },
   "person2": {
      "name": "Bob",
      "welcome": "Hello Bob!"
   }
}

References

• Jsonnet specification

Building & Publishing

Ensure you have the following tools installed:

• GNU make
• Docker

Build

host$ make

Publish

NOTE: This part needs better automation. Feel free to fix. :)

1. Run bash in the node container. Note the leading "./" and also note that your prompt in the container will have a different randomly generated hostname.

   host$ ./bin/bash
   root@55382dc5d87f:/src#

2. Enter your npmjs.com credentials

   root@55382dc5d87f:/src# npm login
   Username: someuser
   Password: 
   Email: (this IS public) [email protected]
   Logged in as someuser on https://registry.npmjs.org/.

3. Actually publish

   root@55382dc5d87f:/src# make publish
   npm publish --access=public
   + @unboundedsystems/[email protected]