q9

node_modules/alien-signals/cjs/unstable/computedArray.js

@@ -0,0 +1,43 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.computedArray = computedArray;
+const index_js_1 = require("../index.js");
+function computedArray(arr, getGetter) {
+    const length = (0, index_js_1.computed)(() => arr.get().length);
+    const keys = (0, index_js_1.computed)(() => {
+        const keys = [];
+        for (let i = 0; i < length.get(); i++) {
+            keys.push(String(i));
+        }
+        return keys;
+    });
+    const items = (0, index_js_1.computed)((array) => {
+        array ??= [];
+        while (array.length < length.get()) {
+            const index = array.length;
+            const item = (0, index_js_1.computed)(() => arr.get()[index]);
+            array.push((0, index_js_1.computed)(getGetter(item, index)));
+        }
+        if (array.length > length.get()) {
+            array.length = length.get();
+        }
+        return array;
+    });
+    return new Proxy({}, {
+        get(_, p, receiver) {
+            if (p === 'length') {
+                return length.get();
+            }
+            if (typeof p === 'string' && !isNaN(Number(p))) {
+                return items.get()[Number(p)]?.get();
+            }
+            return Reflect.get(items.get(), p, receiver);
+        },
+        has(_, p) {
+            return Reflect.has(items.get(), p);
+        },
+        ownKeys() {
+            return keys.get();
+        },
+    });
+}