Configuring Zed editor to use ERB Lint as a formatter

I've recently started using the Zed editor instead of VS Code. It took me a while to work out how to configure ERB Lint as a formatter, so hopefully this will save someone else some time.

Write a shell script to run ERB Lint as follows:

  
    #!/usr/bin/env sh

    bundle exec erb_lint --autocorrect --stdin $1 2>/dev/null \
      | sed '1,/^================/d'
  

• Enable the option to automatically correct linting errors (--autocorrect)
• Read the file content from standard input and specify the path supplied in the first command-line argument (--stdin $1)
• Suppress irrelevant warnings & error messages (2>/dev/null)
• Remove the preamble from the output to make it suitable for a Zed editor formatter (sed '1,/^================/d')
• Ensure the script is executable (chmod +x erb-lint-formatter)

Configure ERB Lint as a formatter by adding the following JSON to your Zed settings, either global or project-specific, replacing $PATH_TO_FORMATTER with the path to the shell script you created above:

  
    {
      "languages": {
        "ERB": {
          "formatter": [
            {
              "external": {
                "command": "$PATH_TO_FORMATTER/erb-lint-formatter",
                "arguments": ["{buffer_path}"]
              }
            }
          ]
        }
      }
    }
  

Zed sets the {buffer_path} placeholder to the path of the buffer currently being edited.