Change default branch to String.toString

bind.js

@@ -24,14 +24,14 @@
 			} else if (Array.isArray(arg)) {
 				classes.push(classNames.apply(this, arg));
 			} else if (argType === 'object') {
-				if (arg.toString !== Object.prototype.toString) {
-					classes.push(arg.toString());
-				} else {
+				if (arg.toString === Object.prototype.toString) {
 					for (var key in arg) {
 						if (hasOwn.call(arg, key) && arg[key]) {
 							classes.push(this && this[key] || key);
 						}
 					}
+				} else {
+					classes.push(arg.toString());
 				}
 			}
 		}

dedupe.js

@@ -29,16 +29,16 @@
 		}
 
 		function _parseObject(resultSet, object) {
-			if(object.toString !== Object.prototype.toString) {
-				resultSet[object.toString()] = true;
-			} else {
+			if (object.toString === Object.prototype.toString) {
 				for (var k in object) {
 					if (hasOwn.call(object, k)) {
 						// set value to false instead of deleting it to avoid changing object structure
 						// https://www.smashingmagazine.com/2012/11/writing-fast-memory-efficient-javascript/#de-referencing-misconceptions
 						resultSet[k] = !!object[k];
 					}
 				}
+			} else {
+				resultSet[object.toString()] = true;
 			}
 		}
 

index.js

@@ -22,21 +22,21 @@
 			if (argType === 'string' || argType === 'number') {
 				classes.push(arg);
 			} else if (Array.isArray(arg)) {
-				if(arg.length) {
+				if (arg.length) {
 					var inner = classNames.apply(null, arg);
 					if (inner) {
 						classes.push(inner);
 					}
 				}
 			} else if (argType === 'object') {
-				if (arg.toString !== Object.prototype.toString) {
-					classes.push(arg.toString());
-				} else {
+				if (arg.toString === Object.prototype.toString) {
 					for (var key in arg) {
 						if (hasOwn.call(arg, key) && arg[key]) {
 							classes.push(key);
 						}
 					}
+				} else {
+					classes.push(arg.toString());
 				}
 			}
 		}