signal-controller - npm Package Compare versions

Comparing version 0.5.0 to 0.6.0

dist/index.d.ts

@@ -5,2 +5,3 @@ declare const ONCE_SYMBOL: unique symbol;
 declare const CLEAR_ALL_SIGNALS: unique symbol;
+declare const COUNT_LISTENERS: unique symbol;
 interface ListenerFunction {
@@ -41,2 +42,3 @@ (...args: any[]): unknown;
     [CLEAR_ALL_SIGNALS](): void;
+    [COUNT_LISTENERS](signalName: keyof T): number;
 }
@@ -65,4 +67,6 @@ interface SignalControllerOptions {
     destroy(): void;
+    /** Checks whether there are listeners attached for the specified signal. */
+    testSignal(signalName: keyof T): boolean;
     /** Creates a writable stream that produces signals of the specified type for each chunk of data it receives. */
     createWritableStream<K extends keyof T>(signalName: K): WritableStream<Parameters<T[K]>>;
 }

dist/index.js

@@ -5,2 +5,3 @@ const ONCE_SYMBOL = Symbol('once');
 const CLEAR_ALL_SIGNALS = Symbol('clear');
+const COUNT_LISTENERS = Symbol('countListeners');
 /** This class is used to listen to signals. */
@@ -118,2 +119,5 @@ class SignalEmitter {
     }
+    [COUNT_LISTENERS](signalName) {
+        return this.#listeners.get(signalName)?.size ?? 0;
+    }
 }
@@ -178,2 +182,6 @@ /** This class is used to emit signals. */
     }
+    /** Checks whether there are listeners attached for the specified signal. */
+    testSignal(signalName) {
+        return this.emitter[COUNT_LISTENERS](signalName) > 0;
+    }
     /** Creates a writable stream that produces signals of the specified type for each chunk of data it receives. */
@@ -180,0 +188,0 @@ createWritableStream(signalName) {

package.json

 {
   "name": "signal-controller",
-  "version": "0.5.0",
+  "version": "0.6.0",
   "description": "A lightweight event emitter with separation of concerns between emitter and listener inspired by the AbortController interface.",
@@ -5,0 +5,0 @@ "author": "Leonardo Raele <[e-mail]>",

No alert changes

Improved metrics

Total package byte prevSize

17619

3.25%

Lines of code

259

4.86%

No dependency changes