please increase the view of the interface that sends the header and body details.

Currently, sendMessage only requires two arguments, queueName is make sense but params is a little confusion without example. one more point is building the object(arguement 'params' requires) is not friendly for developers.
Therefore, suggest to put the attributes of the params as arguments in method.

take an example, enhanced can be like below:

sendMessage(queueName, messageBody, delaySeconds=0, priority=1){
const url = /queues/${queueName}/messages;
const body = toXMLBuffer('Message', {
MessageBody: messageBody,
DelaySeconds: delaySeconds,
Priority: priority
});
return this.post(url, 'Message', body);
}

PS.

current logic: sendMessage(queueName, params)

{
const url = /queues/${queueName}/messages;
const body = toXMLBuffer('Message', params);
return this.post(url, 'Message', body);
}

params so far required example:

{
MessageBody: message,
DelaySeconds: delaySeconds,
Priority: priority
}

I'm running against MNS in ap-southeast-2 region. Requests are returning success but no body is returned. While debugging it seems the response content-type is application/xml but the code is expecting text/xml.

e.g. Changing this line starts working for me:

if (responseBody && contentType.startsWith('text/xml')) {

to

if (responseBody && contentType.startsWith('application/xml')) {

RT，申请完善队列的以下接口：

• 消费消息

• 删除消息

引入库@alicloud/sms-sdk，直接就报错了，帮忙看一下，谢谢

async _getMNSClient(type) {
^^^^^^^^^^^^^
SyntaxError: Unexpected identifier

请帮忙看下batchDeleteMessage接口是否有bug 或者是我传的参数格式不正确？

Got below errors when I was trying to do batch delete

DELETE http://1293562333402418.mns.cn-hangzhou.aliyuncs.com/queues/sync-queue-3w-test/messages failed with 400. requestid: 5AD846B6027AA042745F56DB, hostid: http://1293562333402418.mns.cn-hangzhou.aliyuncs.com, message: The XML you provided was not well-formed.
MNSMalformedXMLError

Params I used:

[ { ReceiptHandle: '1-ODU4OTkzNDU5My0xNTI0MTIzMzQ4LTEtOA==' },
  { ReceiptHandle: '1-ODU4OTkzNDU5NC0xNTI0MTIzMzQ4LTEtOA==' },
  { ReceiptHandle: '1-ODU4OTkzNDU5NS0xNTI0MTIzMzQ4LTEtOA==' } ]

Is it a bug in code or just the params I passed to the API was in wrong format?

const payload = {
    "title":{
            "en":"</3"
    },
    "name": "black&red"
}

await mnsClient.sendMessage(MNS_QUEUE_NAME, {
            MessageBody: JSON.stringify(payload)
});

some special character like '&' . occur error

https://github.com/aliyun/mns-nodejs-sdk/blob/master/lib/client.js#L259

node version 7.x

/home/xxx/node_modules/@alicloud/mns/lib/client.js:252
    const response = await this.delete(`/queues/${queueName}/messages`, 'Errors', body, );
                                                                                        ^
SyntaxError: Unexpected token )
    at createScript (vm.js:53:10)
    at Object.runInThisContext (vm.js:95:10)
    at Module._compile (module.js:543:28)
    at Object.Module._extensions..js (module.js:580:10)
    at Module.load (module.js:488:32)
    at tryModuleLoad (module.js:447:12)
    at Function.Module._load (module.js:439:3)
    at Module.require (module.js:498:17)
    at require (internal/module.js:20:19)
    at Object.<anonymous> (/home/airdwing/projects/AirX/node_modules/@alicloud/mns/index.js:3:18)

on 8.0 after ok.