# Classes

- [SquirrelCanvas](/squirrel-addon-documentation/squirrel-helper-library/javascript/classes/squirrelcanvas.md): Used to reflect the x and y position of the component on the Squirrel canvas.
- [SquirrelColor](/squirrel-addon-documentation/squirrel-helper-library/javascript/classes/squirrelcolor.md): Used to reflect the x and y position of the component on the Squirrel canvas.
- [SquirrelMessage](/squirrel-addon-documentation/squirrel-helper-library/javascript/classes/squirrelmessage.md): Used for communication to and from Squirrel
- [SquirrelPosition](/squirrel-addon-documentation/squirrel-helper-library/javascript/classes/squirrelposition.md): Used to reflect the x and y position of the component on the Squirrel canvas.
- [SquirrelSize](/squirrel-addon-documentation/squirrel-helper-library/javascript/classes/squirrelsize.md): Used to receive height and width information from Squirrel. This could be used for component size as well as binding size.