JSFiddle - React, Tailwind, and code Playground

HTML

<table>
    <tbody>
        <tr>
            <th width="50" class="text-center">#</th>
            <th>Item do Pacote</th>
            <th>Valor</th>
            <th>Vencimento</th>
            <th width="50" class="text-center"></th>
        </tr>
        <tr>
            <td width="50" class="text-center">1</td>
            <td>Salgados - 100 Un</td>
            <td>R$ 150,00</td>
            <td width="200px">
                <input type="date" class="form-control" name="data_vencimento" id="itens[data_vencimento][]">
            </td>
            <td width="50" class="text-center">
                <input type="checkbox" name="item" id="itens[item]" class="checados" value="150,00|1" checked>
            </td>
        </tr>
        <tr>
            <td width="50" class="text-center">2</td>
            <td>Doces - 100 Un</td>
            <td>R$ 114,00</td>
            <td width="200px">
                <input type="date" class="form-control" name="data_vencimento" id="itens[data_vencimento][]">
            </td>
            <td width="50" class="text-center">
                <input type="checkbox" name="item" id="itens[item]" class="checados" value="114,00|2">
            </td>
        </tr>
        <tr>
            <td width="50" class="text-center">3</td>
            <td>Refrigerante - 10 un</td>
            <td>R$ 85,00</td>
            <td width="200px">
                <input type="date" class="form-control array_teste" name="data_vencimento" id="itens[data_vencimento][]">
            </td>
            <td width="50" class="text-center">
                <input type="checkbox" name="item" id="itens[item]" class="array_teste" value="85,00|3">
            </td>
        </tr>
    </tbody>
</table>

JavaScript

var array = $('tr:has(input)').filter(function() {
    return $('[type="checkbox"]:checked', this).length;
}).map(function() {
    return $('input', this).get().reduce(function(obj, input) {
        obj[input.name] = input.value;
        return obj;
    }, {});
}).get();

console.log(JSON.stringify(array));