How to create a thread with user permission for viewing?

async function createThread(interaction, produtos) {
    const existingThread = interaction.channel.threads.cache.find(x => x.name === `🛒・${interaction.user.username}・${interaction.user.id}`);

    if (existingThread) {
        const actionRow = new ActionRowBuilder().addComponents(
            new ButtonBuilder()
                .setURL(`https://discord.com/channels/${interaction.guild.id}/${existingThread.id}`)
                .setLabel('Ir para o carrinho')
                .setStyle(5)
        );
        await interaction.editReply({ content: `❌ Você já possui um carrinho aberto.`, components: [actionRow] });
        return null;
    }

    const novaThread = await interaction.channel.threads.create({
        name: `🛒・${interaction.user.username}・${interaction.user.id}`,
        autoArchiveDuration: 60,
        type: ChannelType.PrivateThread
    });

    await novaThread.members.add(interaction.user.id);
    return novaThread;
}