This is *my* current temporary fix to get SugarJS's static method additions working in typescript.

tmpSugarFix.ts

/// <reference path="../path/to/sugar.d.ts" />

/**
 * Usage Examples:
 *   sgObject.isArray([1]); // -> true
 */
 
declare var sgObject:ObjectStatic;
declare var sgNumber:NumberStatic;
declare var sgDate:DateStatic;
declare var sgRegExp:RegExpStatic;

eval(
	"sgObject 	= Object;" +
	"sgNumber 	= Number;" +
	"sgDate 	= Date;" +
	"sgRegExp 	= RegExp;"
);

If you want to avoid the eval you could also initialize your objects like this:

var sgObject: ObjectStatic = <any>Object;
...

The only problems I see with this solution are:

• You can't port existing code as-is, you have to replace Object with sgObject
• Methods on native types, such as Date.parse(), won't be accessible via your objects, so you have to use Date or sgDate depending on what method you want to call.

Still, it's better than nothing.

Just realized that regarding the second point, you could actually just copy the definitions over from Date to DateStatic (maybe that's what you did).