Sendgrid-nodejs: 未捕获的语法错误：意外的令牌<（在响应对象上触发的lib / sendgrid.js中）

发行摘要

使用SendGrid的电子邮件助手实用程序发送模板化电子邮件之后。 根据此包装器（sendgrid-nodejs），SendGrid API的服务器响应返回无效的JSON。

Uncaught SyntaxError: Unexpected token <
      at Object.parse (native)
      at node_modules/sendgrid/lib/sendgrid.js:110:42
      at IncomingMessage.<anonymous> (node_modules/sendgrid/node_modules/sendgrid-rest/lib/client.js:108:9)
      at endReadableNT (_stream_readable.js:921:12)

第110行是：

  //Use callback
  self.client.API(request, function(response) {
    response.body = response.body ? JSON.parse(response.body) : response.body;

重现步骤

1. 确保sendgrid节点包->“ sendgrid”：“ ^ 4.7.1”，
2. 在SendGrid中创建带有替换的模板并激活该模板
3. 使用电子邮件帮助器为模板创建完整的电子邮件。 最后应用.toJSON。

例：

const BaseWelcomeEmail = (function(){
    const helper = require('sendgrid').mail,
        from_email = new helper.Email(testEmail),
        to_email = new helper.Email(testEmail),
        subject = "Welcome to Bedly",
        content = new helper.Content("text/plain", "hello"),

        mail = new helper.Mail(from_email, subject, to_email, content),
        personalization = new helper.Personalization();

    let substitution = new helper.Substitution(":firstname", "Aaron");

    personalization.addSubstitution(substitution);
    substitution = new helper.Substitution(":lastname", "Elk");
    personalization.addSubstitution(substitution);
    substitution = new helper.Substitution(":address", "96 Washington Avenue");
    personalization.addSubstitution(substitution);
    substitution = new helper.Substitution(":neighborhood", "Washington Heights");
    personalization.addSubstitution(substitution);
    substitution = new helper.Substitution(":unitNumber", "N/A");
    personalization.addSubstitution(substitution);
    substitution = new helper.Substitution(":roomNumber", "2J");
    personalization.addSubstitution(substitution);

    mail.addPersonalization(personalization);

    return mail;
})();

您甚至可以创建一个摩卡测试，我是在此测试环境中运行的：

    describe('Test Email Template', function () {
        it('test template ${TEMPLATE_ID} is active and is complete', function (done) {
            BaseWelcomeEmail.setTemplateId(TEMPLATE_ID);
            SendEmailImpl.sendEmail(BaseWelcomeEmail.toJSON(), done, function(error, response){
                assert_OKResponse(error, response, done);
            });
        });
    });

sendEmail函数包含正常的POST V3设置，以调用文档中所述的API。

技术细节：

• sendgrid-nodejs版本：4.7.1
• Node.js版本：4.6.1