1 files changed, 20 insertions, 0 deletions
diff --git a/llparse-frontend/src/node/slot.ts b/llparse-frontend/src/node/slot.ts
new file mode 100644
index 0000000..923da86
--- /dev/null
+++ b/llparse-frontend/src/node/slot.ts
@@ -0,0 +1,20 @@
+import { IWrap } from '../wrap';
+import { Node } from './base';
+
+export class Slot {
+  private privNode: IWrap<Node>;
+
+  constructor(node: IWrap<Node>,
+              private readonly privUpdate: (value: IWrap<Node>) => void) {
+    this.privNode = node;
+  }
+
+  public get node(): IWrap<Node> {
+    return this.privNode;
+  }
+
+  public set node(value: IWrap<Node>) {
+    this.privNode = value;
+    this.privUpdate(value);
+  }
+}