Fixed decimals: 0

test.html

@@ -39,6 +39,15 @@
 			equal ( Tester.from ( '-79?900_041' ), -79900.041 );
 		});
 
+		test( "Testing 0 decimals", function(){
+
+			var Tester = wNumb({
+				decimals: 0
+			});
+
+			equal ( Tester.to ( -50.999845 ), '-51' );			
+		});
+
 		test( "Testing mark and thousand with longer strings", function(){
 
 			var Tester = wNumb({
@@ -131,7 +140,7 @@
 		test( "Testing edit, undo", function(){
 
 			var Tester = wNumb({
-				edit: function( value, originalValue ){				
+				edit: function( value, originalValue ){
 					if ( originalValue > 100000 ) {
 						return value + 'm';
 					} else if ( originalValue > 1000 ) {
@@ -147,7 +156,7 @@
 
 			equal ( Tester.to ( 15000 ), '15000k' );
 			equal ( Tester.from ( '15000k' ), 15000 );
-			
+
 			equal ( Tester.to ( 180 ), '180' );
 			equal ( Tester.from ( '180' ), 180 );
 

wNumb.js

@@ -85,7 +85,7 @@ var
 		}
 
 		// Reduce the number of decimals to the specified option.
-		if ( decimals ) {
+		if ( decimals !== false ) {
 			input = toFixed( input, decimals );
 		}
 
@@ -248,21 +248,27 @@ var
 
 			// Floating points in JS are stable up to 7 decimals.
 			} else if ( optionName === 'decimals' ) {
-				if ( optionValue > 0 && optionValue < 8 ) {
+				if ( optionValue >= 0 && optionValue < 8 ) {
 					filteredOptions[optionName] = optionValue;
+				} else {
+					throw new Error(optionName);
 				}
 
 			// These options, when provided, must be functions.
 			} else if ( optionName === 'encoder' || optionName === 'decoder' || optionName === 'edit' || optionName === 'undo' ) {
 				if ( typeof optionValue === 'function' ) {
 					filteredOptions[optionName] = optionValue;
+				} else {
+					throw new Error(optionName);
 				}
 
 			// Other options are strings.
 			} else {
 
 				if ( typeof optionValue === 'string' ) {
 					filteredOptions[optionName] = optionValue;
+				} else {
+					throw new Error(optionName);
 				}
 			}
 		}