问腾讯云存储cos获取临时密钥 ，提示 options is not defined ？

按官方文档操作获取密钥，但是返回 options is not defined，官方demo也没这个参数。

// 拼接获取临时密钥的参数

var getCredential = function (options, callback) {

if (options.durationInSeconds !== undefined) {

console.warn('warning: durationInSeconds has been deprecated, Please use durationSeconds ).');

}

var secretId = options.secretId;

var secretKey = options.secretKey;

var proxy = options.proxy || '';

var host = options.host || '';

var region = options.region || 'ap-beijing';

var durationSeconds = options.durationSeconds || options.durationInSeconds || 1800;

var policy = options.policy;

var policyStr = JSON.stringify(policy);

var action = 'GetFederationToken';

var nonce = util.getRandom(10000, 20000);

var timestamp = parseInt(+new Date() / 1000);

var method = 'POST';

var params = {

SecretId: secretId,

Timestamp: timestamp,

Nonce: nonce,

Action: action,

DurationSeconds: durationSeconds,

Name: 'cos-sts-nodejs',

Version: '2018-08-13',

Region: region,

Policy: encodeURIComponent(policyStr),

};

params.Signature = util.getSignature(params, secretKey, method);

var opt = {

method: method,

url: StsUrl.replace('{host}', host || StsDomain),

strictSSL: false,

json: true,

form: params,

headers: {

Host: StsDomain

},

proxy: proxy,

};

// 输出问题，显示 options is not defined

request(opt, function (err, response, body) {

return body;

var data = body && body.Response;

if (data) {

if (data.Error) {

callback(data.Error);

} else {

try {

data.startTime = data.ExpiredTime - durationSeconds;

data = util.backwardCompat(data);

callback(null, data)

} catch (e) {

callback(new Error(`Parse Response Error: ${JSON.stringify(data)}`))

}

}

} else {

callback(err || body);

}

});

};