How to use the @hapi/b64.base64urlEncode function in @hapi/b64

if (password.id) {
        if (!/^\w+$/.test(password.id)) {
            throw new Boom.Boom('Invalid password id');
        }

        passwordId = password.id;
    }

    // Encrypt object string

    const { encrypted, key } = await exports.encrypt(password.encryption, options.encryption, objectString);

    // Base64url the encrypted value

    const encryptedB64 = B64.base64urlEncode(encrypted);
    const iv = B64.base64urlEncode(key.iv);
    const expiration = (options.ttl ? now + options.ttl : '');
    const macBaseString = exports.macPrefix + '*' + passwordId + '*' + key.salt + '*' + iv + '*' + encryptedB64 + '*' + expiration;

    // Mac the combined values

    const mac = await exports.hmacWithPassword(password.integrity, options.integrity, macBaseString);

    // Put it all together

    // prefix*[password-id]*encryption-salt*encryption-iv*encrypted*[expiration]*hmac-salt*hmac
    // Allowed URI query name/value characters: *-. \d \w

    const sealed = macBaseString + '*' + mac.salt + '*' + mac.digest;
    return sealed;
};

password = internals.normalizePassword(password);
    if (password.id) {
        if (!/^\w+$/.test(password.id)) {
            throw new Boom.Boom('Invalid password id');
        }

        passwordId = password.id;
    }

    // Encrypt object string

    const { encrypted, key } = await exports.encrypt(password.encryption, options.encryption, objectString);

    // Base64url the encrypted value

    const encryptedB64 = B64.base64urlEncode(encrypted);
    const iv = B64.base64urlEncode(key.iv);
    const expiration = (options.ttl ? now + options.ttl : '');
    const macBaseString = exports.macPrefix + '*' + passwordId + '*' + key.salt + '*' + iv + '*' + encryptedB64 + '*' + expiration;

    // Mac the combined values

    const mac = await exports.hmacWithPassword(password.integrity, options.integrity, macBaseString);

    // Put it all together

    // prefix*[password-id]*encryption-salt*encryption-iv*encrypted*[expiration]*hmac-salt*hmac
    // Allowed URI query name/value characters: *-. \d \w

    const sealed = macBaseString + '*' + mac.salt + '*' + mac.digest;
    return sealed;
};

const exp = Math.floor(now / 1000) + options.ttlSec;
    const mac = Crypto.calculateMac('bewit', credentials, {
        ts: exp,
        nonce: '',
        method: 'GET',
        resource: uri.pathname + (uri.search || ''),                            // Maintain trailing '?'
        host: uri.hostname,
        port: uri.port || (uri.protocol === 'http:' ? 80 : 443),
        ext
    });

    // Construct bewit: id\exp\mac\ext

    const bewit = credentials.id + '\\' + exp + '\\' + mac + '\\' + ext;
    return B64.base64urlEncode(bewit);
};

it('returns an error when decrypted object is invalid', async () => {

            const badJson = '{asdasd';
            const { encrypted, key } = await Iron.encrypt(password, Iron.defaults.encryption, badJson);
            const encryptedB64 = B64.base64urlEncode(encrypted);
            const iv = B64.base64urlEncode(key.iv);
            const macBaseString = Iron.macPrefix + '**' + key.salt + '*' + iv + '*' + encryptedB64 + '*';
            const mac = await Iron.hmacWithPassword(password, Iron.defaults.integrity, macBaseString);
            const ticket = macBaseString + '*' + mac.salt + '*' + mac.digest;
            const err = await expect(Iron.unseal(ticket, password, Iron.defaults)).to.reject(/Failed parsing sealed object JSON: Unexpected token a/);
            expect(err.isBoom).to.be.true();
        });

it('returns an error when decrypted object is invalid', async () => {

            const badJson = '{asdasd';
            const { encrypted, key } = await Iron.encrypt(password, Iron.defaults.encryption, badJson);
            const encryptedB64 = B64.base64urlEncode(encrypted);
            const iv = B64.base64urlEncode(key.iv);
            const macBaseString = Iron.macPrefix + '**' + key.salt + '*' + iv + '*' + encryptedB64 + '*';
            const mac = await Iron.hmacWithPassword(password, Iron.defaults.integrity, macBaseString);
            const ticket = macBaseString + '*' + mac.salt + '*' + mac.digest;
            const err = await expect(Iron.unseal(ticket, password, Iron.defaults)).to.reject(/Failed parsing sealed object JSON: Unexpected token a/);
            expect(err.isBoom).to.be.true();
        });

const exp = Math.floor(Hawk.utils.now() / 1000) + 60;
        const ext = 'some-app-data';
        const mac = Hawk.crypto.calculateMac('bewit', credentials, {
            ts: exp,
            nonce: '',
            method: req.method,
            resource: req.url,
            host: req.host,
            port: req.port,
            ext
        });

        const bewit = credentials.id + '\\' + exp + '\\' + mac + '\\' + ext;

        req.url += '&bewit=' + B64.base64urlEncode(bewit);

        await expect(Hawk.uri.authenticate(req, credentialsFunc)).to.reject('Invalid method');
    });