Gets the extension type.
Destination object.
Extension type object.
var singleType = ['undefined', 'null', 'number', 'string', 'boolean', 'regexp', 'object', 'symbol'];var unionType = ['array', 'choice', 'function', 'class', 'union']; Copy
var singleType = ['undefined', 'null', 'number', 'string', 'boolean', 'regexp', 'object', 'symbol'];var unionType = ['array', 'choice', 'function', 'class', 'union'];
Gets the extension type.