Move the classes of the config items into the newly created config-items directory.

config-serializer/config-items/KeystrokeAction.ts

@@ -0,0 +1,50 @@
+class KeystrokeAction extends KeyAction implements Serializable<KeystrokeAction> {
+
+    static actionTypeString = 'keystroke';
+    static firstValidScancode = 1;
+    static lastValidScancode = 231;
+
+    _scancode: number;
+    modifierMask: number;
+
+    get scancode() {
+        return this._scancode;
+    }
+
+    set scancode(value) {
+        if (!KeystrokeAction.isScancodeValid(value)) {
+            throw 'Invalid KeystrokeAction.scancode: ${scancode}';
+        }
+        this._scancode = value;
+    }
+
+    static isScancodeValid(scancode) {
+        return KeystrokeAction.firstValidScancode <= scancode &&
+               scancode <= KeystrokeAction.lastValidScancode;
+    }
+
+    fromJsObject(jsObject: any): KeystrokeAction {
+        this.scancode = jsObject.scancode;
+        this.modifierMask = jsObject.modifierMask;
+        return this;
+    }
+
+    fromBinary(buffer: UhkBuffer): KeystrokeAction {
+        this.scancode = buffer.readUInt8();
+        this.modifierMask = buffer.readUInt8();
+        return this;
+    }
+
+    toJsObject(): any {
+        return {
+            keyActionType: KeystrokeAction.actionTypeString,
+            scancode: this.scancode,
+            modifierMask: this.modifierMask
+        };
+    }
+
+    toBinary(buffer: UhkBuffer) {
+        buffer.writeUInt8(this.scancode);
+        buffer.writeUInt8(this.modifierMask);
+    }
+}