Package general provides functions that apply to multiple project types.

Package library provides functions specific to linting Arduino libraries.

Package packageindex provides functions specific to linting the package index files of the Arduino Boards Manager.

Package platform provides functions specific to linting Arduino boards platforms.

Package projectdata handles the collection of data specific to a project before running the rules on it.

Package projecttype defines the Arduino project types.

Package sketch provides functions specific to linting Arduino sketches.

FindProjects searches the target path configured by the user for projects of the type configured by the user as well as the subprojects of those project.

Type is the type for project definitions.