block35.js

// server/src/graphql/vonage.js
...
const verifyRequestResolver = async (_, { number }, __, ___) => {
  try {
    const requestId = await verifyRequest(number);
    return {
      requestId,
    };
  } catch (err) {
    console.error(err);
    throw new Error(INTERNAL_ERROR);
  }
};

const checkCodeResolver = async (_, { requestId, code, number }, __, ___) => {
  try {
    const result = await checkCode(code, requestId);

    // if verification is successful, we return a JWT token
    if (result) {
      const [student] = students.filter(
        (student) => student.phoneNumber === number
      );

      // create the token
      const token = jwt.sign(
        {
          phoneNumber: student.phoneNumber,
        },
        accessTokenSecret,
        {
          expiresIn: '15min',
        }
      );

      return {
        token,
      };
    } else {
      return {
        token: null,
      };
    }
  } catch (err) {
    console.error('An error ocurred when trying to check code', err);
    return {
      token: null,
    };
  }
};
...