createCustomer.js

static async create(req, res, next) {
    try {
      const errors = validationResult(req); // Finds the validation errors in this request and wraps them in an object with handy functions

      if (!errors.isEmpty()) {
        return res.status(422).json({
          error: {
            code: `USR_03`,
            message: `The email is invalid.`,  // eslint-disable-line
            field: `email`,
            status: 400,
          },
        });
      }
      const { email, name, password } = req.query;
     
      const cust = await Customer.findOne({
        where: {
          // eslint-disable-next-line object-shorthand
          email: email,
        },
      });

      if (cust) {
        return res.status(422).json({
          error: {
            code: `USR_04`,
            message: `The email already exists.`,  // eslint-disable-line
            field: `email`,
            status: 400,
          },
        });
      }

      Customer.create({
        email,
        password,
        name,
      })
        .then(user => {
          const payload = { email: user.email };

          const token = jwt.sign(payload, `${secret}`, { expiresIn: '24h' }); // Token is created

          return res.status(200).json({
            customer: {
              customer_id: user.customer_id,
              name: user.name,
              email: user.email,
              address_1: user.address_1,
              address_2: user.address_2,
              city: user.city,
              region: user.region,
            },

            accessToken: `Bearer ${token}`, // Token sent to client
            expiresIn: `24h`, // expiration 
          });
        })
        // eslint-disable-next-line no-unused-vars
        .catch(_err => {
          return res.status(400).json({
            error: {
              code: `USR_10`,
              message: `Error occurred`,  // eslint-disable-line
              field: `register`,
              status: 400,
            },
          });
        });
    } catch (error) {
      return next(error);
    }
  }