Nodejs模块导出TypeError

Question

我试图确定引发以下错误的模块设置有什么问题：

[TypeError：transactionalEmails.request不是一个函数]

似乎不是如何导出变量，而是我如何创建request函数。 对我遗失的东西或我犯的错误有帮助吗？

transactional-emails.js：

var transactionalEmails = function() {

    var helper = require('sendgrid').mail;

    request: function request(requester, receiver){

        var fromEmail = new helper.Email(requester);
        var toEmail = new helper.Email(receiver);

        var subject = requester + ' has requested a message.';
        var body = new helper.Content('text/plain', 'Hello Email');
        var email = new helper.Mail(fromEmail, subject, toEmail, body);

        var sg = require('sendgrid')(process.env.EMAIL_API_KEY);

        var request = sg.emptyRequest({
            method: 'POST',
            path: '/v3/mail/send',
            body: email.toJSON(),
        });

        return console.log(fromEmail + " Sending a request to " + toEmail);

        /*sg.API(request, function(error, response) {
            console.log(response.statusCode);
            console.log(response.body);
            console.log(response.headers);
        });*/
    }
};
module.exports = transactionalEmails;

这是我调用该函数的方式：

var transactionalEmails = require('./transactional-emails');

transactionalEmails.request(req.user.email, req.body.receiverEmail);

Answer 1

您正在导出要导出对象的功能。

var helper = require('sendgrid').mail;

var transactionalEmails = {
  request: function request(requester, receiver){
  ...
  }
};

module.exports = transactionalEmails;