You can install the plugin from within the JetBrains IDE by going to Settings -> Plugins and then searching for "Elm". After installing the plugin, restart the IDE and then open your existing Elm project or create a new project.

• Live Error Checking
• Generate JSON Decoders & Encoders
• Rename refactoring

• Type Inference
• Find Usages
• Run Tests (elm-test)
• Reformat File (elm-format)
• Cleanup unused imports
• Detect unused code
• Add Imports
• Quick Docs
• Structure View & Quick Nav
• WebGL/GLSL support
• Code Folding
• Manage the Exposing List
• Plus the usual IDE stuff: code completion, go-to-declaration, spell-checking, etc.

Want to see it in action? This 10 minute video demonstrates many of the features and how they work together.

Note: if you have node installed using nvm, please see the related information here.

• Is this free?
  • Yes, the plugin itself is free and it works with the free version of IntelliJ.
• What versions of IntelliJ does this work with?
  • IntelliJ IDEA Ultimate
  • IntelliJ IDEA Community Edition (free!)
  • PyCharm Professional
  • PyCharm Community (free!)
  • WebStorm (amazing JS and CSS support)
  • and others (untested)