q9

node_modules/alien-signals/cjs/signal.js

@@ -0,0 +1,36 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.Signal = void 0;
+exports.signal = signal;
+const system_js_1 = require("./system.js");
+function signal(oldValue) {
+    return new Signal(oldValue);
+}
+class Signal {
+    constructor(currentValue) {
+        this.currentValue = currentValue;
+        // Dependency
+        this.subs = undefined;
+        this.subsTail = undefined;
+        this.linkedTrackId = -1;
+    }
+    get() {
+        const activeTrackId = system_js_1.System.activeTrackId;
+        if (activeTrackId !== 0 && this.linkedTrackId !== activeTrackId) {
+            this.linkedTrackId = activeTrackId;
+            system_js_1.Dependency.linkSubscriber(this, system_js_1.System.activeSub);
+        }
+        return this.currentValue;
+    }
+    set(value) {
+        if (this.currentValue !== (this.currentValue = value)) {
+            const subs = this.subs;
+            if (subs !== undefined) {
+                (0, system_js_1.startBatch)();
+                system_js_1.Dependency.propagate(subs);
+                (0, system_js_1.endBatch)();
+            }
+        }
+    }
+}
+exports.Signal = Signal;