hcl-to-json

HCL to JSON converter for JS applications.

HCL (HashiCorp Configuration Language) is a configuration language built by HashiCorp. The goal of HCL is to build a structured configuration language that is both human and machine friendly for use with command-line tools, but specifically targeted towards DevOps tools, servers, etc.

HCL is also fully JSON compatible. That is, JSON can be used as completely valid input to a system expecting HCL. This helps makes systems interoperable with other systems.

Getting started

You can install with npm i hcl-to-json -g then simply require and pass HCL content to get JSON output. If you have a bad HCL content it's suggested to call in try .. catch block

 
hcltojson = require 'hcltojson'
 
hcltojson """
 
foo "bar" {
  baz = 123
  tex = ["one", "two"]
  mon "test" {
    lar = "bar"
  }
}
 
"""

will return following JSON object:

{
  "foo": {
    "bar": {
      "baz": 123,
      "tex": [
        "one",
        "two"
      ],
      "mon": {
        "test": {
          "lar": "bar"
        }
      }
    }
  }
}
 

or you can use the hcltojson cli for any hcl formatted file or standart input;

$ npm install hcl-to-json -g
$ echo "foo=3" | hcltojson
{
    "foo": 3
}

$ echo "foo bar { baz = 123 }" > test.tf
$ hcltojson test.tf
{
    "foo": {
        "bar": {
            "baz": 123
        }
    }
}

In browser you may include the dist/bundle.js which will export hcltojson function into window. You can also try it in your browser from https://runkit.com/npm/hcl-to-json

Syntax

It currently supports the high-level features of the syntax and grammar of HCL. Syntax details can be found here

Status

It's experimental now and in early stages of development, but supports lots of samples listed under test folder.

Development

You can use DEBUG="hcltojson:*" npm test watch while developing for live compile and test results with debug output.

License

MIT (c) 2016 Gokmen Goksel