fixed bug where modifier key was counted as part of sequence

package.json

@@ -1,6 +1,6 @@
 {
   "name": "hyperf-keybinds",
-  "version": "0.1.2",
+  "version": "0.1.3",
   "description": "",
   
   "main": "dist/index.js",

src/createKeyHandler.ts

@@ -36,6 +36,8 @@ export function createKeyHandler(commandMaps : CommandMap[], timeout : number =
   };
 
   const handler = (event: KeyboardEvent) => {
+    if (isModifierKey(event)) return;
+
     const command = eventToKeyCommand(event);
 
     // Get next tree node
@@ -90,3 +92,12 @@ function getModifiers(event: KeyboardEvent): Modifiers {
   if (event.metaKey) mods.push(ModifierKey.Meta);
   return mods;
 }
+
+function isModifierKey(event: KeyboardEvent): boolean {
+  return (
+    event.key === "Shift" ||
+    event.key === "Control" ||
+    event.key === "Alt" ||
+    event.key === "Meta"
+  );
+}