Collection model

const Collection_Item = Fractale.create("Collection_Item", {
    value: String
});

const Collection_Category = Fractale.create("Collection_Category", {
    items: [
        Collection_Item
    ]
});

const { Collection_Category, Collection_Item } = module.exports.get();
const item = new Collection_Item({ value: 'foo' });
const category = new Collection_Category({ items: [item, { value: 'bar' }] });

_.test(category.items[0].value, 'foo', 'Error on collection accessor with brace');
_.test(category.items[1].value, 'bar', 'Error on collection accessor with brace');

let changed = false;
category.addEventListener('change', () => changed = true);
category.items[0].value = 'hello';

if (!changed) {
    throw new Error('Error on collection change event');
}
_.test(category.items[0].value, 'hello', 'Error on collection accessor with brace after change');
_.test(category.items.first.value, 'hello', 'Error on collection method first accessor');

category.items.push({ value: 'world' });

_.test(category.items.last.value, 'world', 'Error on collection method last accessor');
_.test(category.items.map(item => item.value).join(', '), 'hello, bar, world', 'Error on array method map accessor');
_.test(category.items.filter(item => item.value === 'hello').map(item => item.value).join(', '), 'hello', 'Error on array method filter accessor');
_.test(category.items.reduce((accu, item) => `${accu} ${item.value}`, '').trim(), 'hello bar world', 'Error on array method reduce accessor');

category.items.remove(item);
if (category.items.length !== 2) throw new Error('Error on array method remove accessor');

resolve(category);

{
    "uuid": "269189c4-9f16-47db-bfe0-094ed8a2a676",
    "items": [
        {
            "uuid": "6edf2663-1fb9-4b76-8c4d-724f5ef70da1",
            "value": "bar"
        },
        {
            "uuid": "522ec9e9-2920-415d-a239-79fb620227fa",
            "value": "world"
        }
    ]
}