A description for the visualization FIXME: vega-lite doesn't seem to use this property, so it may not have any use beyond an internal one
A string representing the kind of mark the visualization should use
One of "bar", "circle", "square", "tick", "line", "area", "point", "rule", and "text".
TODO: Update tpe to be a string literal union of those types, rather than string.
Represents the size of the visualization, if it has been specified
Generated using TypeDoc
Describes the state managed by the marks reducer