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