This is an extension for the Brackets editor that provides linting functionality for YAML files.
To install, simply look for this extension in the Brackets extension manager.
This extension uses a modified, bundled version of js-yaml to parse the YAML file. The modification makes js-yaml emit a warning when a key is re-defined in a mapping, e.g.
days_of_the_week:
Monday: 1
Tuesday: 2
Wednesday: 3
Thursday: 4
Friday: 5
Saturday: 6
Sunday: 7
Monday: 1
will cause a warning to be emitted because Monday
has been defined twice. This was added because it is a common mistake that can be frustrating to trouble-shoot.