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node_modules/runed/dist/utilities/previous/previous.svelte.js

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+/**
+ * Holds the previous value of a getter.
+ *
+ * @see {@link https://runed.dev/docs/utilities/previous}
+ */
+export class Previous {
+    #previousCallback = () => undefined;
+    #previous = $derived.by(() => this.#previousCallback());
+    constructor(getter, initialValue) {
+        let actualPrevious = undefined;
+        if (initialValue !== undefined)
+            actualPrevious = initialValue;
+        this.#previousCallback = () => {
+            try {
+                return actualPrevious;
+            }
+            finally {
+                actualPrevious = getter();
+            }
+        };
+    }
+    get current() {
+        return this.#previous;
+    }
+}