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AWS CloudFormation Templates for Visual Studio Code

This extension adds rich language support for AWS CloudFormation Templates to Visual Studio Code. It works for both JSON and YAML templates, as long as the file extensions are respectively .cfn.json or .cfn.yaml. Alternatively, you can set the language mode for a file to "CloudFormation JSON" or "CloudFormation YAML" using the language picker in the bottom right.

Quick Start

  1. Install the extension
  2. Open any .cf.json or .cf.yaml file in VS Code.
  3. Enjoy rich language tooling

Language features

Features demo

  • Auto-completion
  • Go to Definition
  • Find References
  • Smart rename
  • File outline
  • Inline errors

These features work even when there are syntactic or semantic errors in your file.

Contributing

The best way to contribute to this extensions is to use it and file issues on the GitHub repository. Thank you! Also please rate the extension and leave honest feedback, I'll be sure to read it.

Architecture

This extension provides rich language support using a Language Server Protocol server provided by this project. It connects to that LSP server using vscode-languageclient.

Faster performance

This extension runs faster when Java is installed. It looks for the Java home directory in these locations:

  1. the java.home setting in VS Code settings (workspace then user settings)
  2. the JDK_HOME environment variable
  3. the JAVA_HOME environment variable
  4. on the current system path