Provider & Backend information is not removed in cdktf 0.20.0 --hcl output

[shinebayar-g]

Description

Using the following example

import { App } from 'cdktf';
import { Construct } from 'constructs';
import {
    TFModuleStack,
    TFModuleVariable,
    TFModuleOutput,
    ProviderRequirement,
} from '@cdktf/tf-module-stack';
import { Resource } from '@cdktf/provider-null/lib/resource';

class MyAwesomeModule extends TFModuleStack {
    constructor(scope: Construct, id: string) {
        super(scope, id);

        new ProviderRequirement(this, 'null', '~> 2.0');
        const resource = new Resource(this, 'resource');

        new TFModuleVariable(this, 'my_var', {
            type: 'string',
            description: 'A variable',
            default: 'default',
        });

        new TFModuleOutput(this, 'my_output', {
            value: resource.id,
        });
    }
}

const app = new App();
new MyAwesomeModule(app, 'my-awesome-module');
app.synth();

cdktf synth generates

cdktf-modules
├── cdktf.out
│   ├── manifest.json
│   └── stacks
│       └── my-awesome-module
│           └── cdk.tf.json
└── main.ts

cdk.tf.json content

{
  "//": {
    "metadata": {
      "backend": "local",
      "stackName": "my-awesome-module",
      "version": "0.20.0"
    },
    "outputs": {
      "my-awesome-module": {
        "my_output": "my_output"
      }
    }
  },
  "output": {
    "my_output": [
      {
        "value": "${null_resource.resource.id}"
      }
    ]
  },
  "resource": {
    "null_resource": {
      "resource": {
        "//": {
          "metadata": {
            "path": "my-awesome-module/resource",
            "uniqueId": "resource"
          }
        }
      }
    }
  },
  "terraform": {
    "required_providers": {
      "null": {
        "version": "~> 2.0"
      }
    }
  },
  "variable": {
    "my_var": [
      {
        "default": "default",
        "description": "A variable",
        "type": "string"
      }
    ]
  }
}

cdktf synth --hcl generates

cdktf-modules
├── cdktf.out
│   ├── manifest.json
│   └── stacks
│       └── my-awesome-module
│           ├── cdk.tf
│           └── metadata.json
└── main.ts

cdk.tf content

terraform {
  required_providers {
    null = {
      version = "~> 2.0"
    }
  }
  backend "local" {
    path = "/Users/Home/cdktf-modules/terraform.my-awesome-module.tfstate"
  }

}

provider "null" {
}
resource "null_resource" "resource" {
}

variable "my_var" {
  default     = "default"
  description = "A variable"
  type        = string
}

output "my_output" {
  value = "${null_resource.resource.id}"
}

metadata.json content

{
  "//": {
    "metadata": {
      "backend": "local",
      "stackName": "my-awesome-module",
      "version": "0.20.0"
    },
    "outputs": {
      "my-awesome-module": {
        "my_output": "my_output"
      }
    }
  },
  "resource": {
    "null_resource": {
      "resource": {
        "//": {
          "metadata": {
            "path": "my-awesome-module/resource",
            "uniqueId": "resource"
          }
        }
      }
    }
  },
  "terraform": {
    "backend": {
      "local": {
        "path": "/Users/Home/cdktf-modules/terraform.my-awesome-module.tfstate"
      }
    },
    "required_providers": {
      "null": {
        "version": "~> 2.0"
      }
    }
  }
}

Versions

language: typescript
cdktf-cli: 0.20.0
cdktf: 0.20.0
node: v20.10.0
constructs: 10.3.0
terraform: v1.3.7
arch: arm64
os: darwin 23.2.0

Providers

"@cdktf/provider-null": "10.0.0",
"@cdktf/tf-module-stack": "5.0.0"

Gist

No response

Possible Solutions

No response

Workarounds

No response

Anything Else?

Is metadata.json file needed? It looks identical to the previous json version.

References

No response

Help Wanted

• [ ] I'm interested in contributing a fix myself

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[DanielMSchmidt]

We don't support HCL output in this repository right now, sorry.