added an experimental Function.prototype.then...

Signed-off-by: Alex A. Naanou <alex.nanou@gmail.com>

Function.js

@@ -0,0 +1,49 @@
+/**********************************************************************
+* 
+*
+*
+**********************************************/  /* c8 ignore next 2 */
+((typeof define)[0]=='u'?function(f){module.exports=f(require)}:define)
+(function(require){ var module={} // make module AMD/node compatible...
+/*********************************************************************/
+
+var object = require('ig-object')
+
+
+/*********************************************************************/
+
+var FunctionProtoMixin =
+module.FunctionProtoMixin =
+object.Mixin('FunctionProtoMixin', 'soft', {
+	// NOTE: this is more usefull to define new functions for later reuse
+	// 		rather than one-time "modding", for example, calling this on 
+	// 		instance methods will lose context:
+	// 			;[1,3,2]
+	// 				.sort
+	// 				.then(function(res){
+	// 					return res.pop() })
+	// 		a better way to do this:
+	// 			;[1,3,2]
+	// 				.sort()
+	// 				.pop()
+	// 		and a better way to use this is:
+	// 			Array.prototype.greatest = 
+	// 				Array.prototype
+	// 					.sort
+	// 					.then(function(res){ 
+	// 						return res.pop() })
+	then: function(func){
+		var that = this
+		return function(){
+			return func.call(this, 
+				that.call(this, 
+					...arguments), 
+				...arguments) }},
+})
+
+FunctionProtoMixin(Function.prototype)
+
+
+
+/**********************************************************************
+* vim:set ts=4 sw=4 :                               */ return module })

main.js

@@ -9,6 +9,7 @@
 
 // Extend built-in types...
 require('./Object')
+//require('./Function')
 require('./Array')
 require('./Set')
 require('./Map')