index.js

//backend/routes/index.js:27
router.post('/customer-login', async (req, res) => {
  try {
    const firstName = req.body.firstName.replace(/\s/g, '_');
    const lastName = req.body.lastName.replace(/\s/g, '_');

    const client = new StreamChat(streamApiKey, streamApiSecret);

    [customer, admin] = createUsers(firstName, lastName);

    await client.upsertUsers([
      customer,
      admin
    ]);

    const channel = client.channel('messaging', uuidv4(), {
      members: [customer.id, admin.id],
    });

    const customerToken = client.createToken(customer.id);

    res.status(200).json({
      customerId: customer.id,
      customerToken,
      channelId: channel.id,
      streamApiKey,
    });

  } catch (err) {
    console.error(err);
    res.status(500).json({ error: err.message });
  }
});