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Several pre-commit hooks to keep Terraform configurations (both *.tf and *.tfvars) in a good shape:

• terraform_docs - Inserts input and output documentation into README.md.
• terraform_fmt - Rewrites all Terraform configuration files to a canonical format.
• terraform_graph - Generates resource graph and inserts into README.md
• terraform_template - Ensures that all files in template exist locally and maintained files are current
• terraform_tools - Install and update all tools required by hooks in this repo
• terraform_validate_no_variables - Validates all Terraform configuration files without checking whether all required variables were set.
• terraform_validate_with_variables - Validates all Terraform configuration files and checks whether all required variables were specified.
• tflint - Lint check Terraform files. Configures tflint for terraform version and to ignore all modules (due to tflint not handling registry format)

1. terraform_validate_no_variables and terraform_validate_with_variables will not work if variables are being set dynamically (eg, when using Terragrunt). Use terragrunt validate command instead.

2. terraform_docs will insert/update documentation generated by terraform-docs between markers - <!-- BEGINNING OF PRE-COMMIT-TERRAFORM DOCS HOOK --> and <!-- END OF PRE-COMMIT-TERRAFORM DOCS HOOK --> if they are present in README.md. Make sure that terraform-docs is installed.

.pre-commit-config.yaml:

repos:
  - repo: https://github.com/devops-workflow/pre-commit-terraform
    rev: v1.13.0
    hooks:
      - id: terraform_tools
      - id: terraform_template
      - id: terraform_fmt
      - id: terraform_docs
      - id: terraform_graph
      - id: tflint

Enjoy the clean and documented code!