Initial commit

src/infrastructure/Events/ISignal.ts

@@ -0,0 +1,4 @@
+export interface ISignal<T> {
+    on(handler: (data: T) => void): void;
+    off(handler: (data: T) => void): void;
+}

src/infrastructure/Events/Signal.ts

@@ -0,0 +1,18 @@
+import { ISignal } from './ISignal';
+export { ISignal };
+
+export class Signal<T> implements ISignal<T> {
+    private handlers: Array<(data: T) => void> = [];
+
+    public on(handler: (data: T) => void): void {
+        this.handlers.push(handler);
+    }
+
+    public off(handler: (data: T) => void): void {
+        this.handlers = this.handlers.filter((h) => h !== handler);
+    }
+
+    public notify(data: T) {
+        this.handlers.slice(0).forEach((h) => h(data));
+    }
+}