javascript - Firebase 函数环境变量无法读取未定义的属性

Question

我有一个与 firebase 连接的 Angular 应用程序。到目前为止，我已经完成了数据库和身份验证工作。但现在我被困在云功能上。
每次有人预订受益人时，我都会尝试使用 nodemailer 发送电子邮件。
函数代码大部分是从firebase github函数示例中复制的
像这样:

'use strict';

const functions = require('firebase-functions');
const nodemailer = require('nodemailer');
// Configure the email transport using the default SMTP transport and a GMail account.
// For other types of transports such as Sendgrid see https://nodemailer.com/transports/
// TODO: Configure the `gmail.email` and `gmail.password` Google Cloud environment variables.
const gmailEmail = functions.config().gmail.email;
const gmailPassword = functions.config().gmail.password;
const mailTransport = nodemailer.createTransport({
  service: 'gmail',
  auth: {
    user: gmailEmail,
    pass: gmailPassword,
  },
});

// Sends an email confirmation when a user changes his mailing list subscription.
exports.sendEmailConfirmation = functions.database.ref('/users/{uid}').onWrite(async (change) => {
  const snapshot = change.after;
  const val = snapshot.val();

  if (!snapshot.changed('subscribedToMailingList')) {
    return null;
  }

  const mailOptions = {
    from: '"Spammy Corp." <noreply@firebase.com>',
    to: val.email,
  };

  const subscribed = val.subscribedToMailingList;

  // Building Email message.
  mailOptions.subject = subscribed ? 'Thanks and Welcome!' : 'Sad to see you go :`(';
  mailOptions.text = subscribed ?
      'Thanks you for subscribing to our newsletter. You will receive our next weekly newsletter.' :
      'I hereby confirm that I will stop sending you the newsletter.';

  try {
    await mailTransport.sendMail(mailOptions);
    console.log(`New ${subscribed ? '' : 'un'}subscription confirmation email sent to:`, val.email);
  } catch(error) {
    console.error('There was an error while sending the email:', error);
  }
  return null;
});

在此之后我设置我的环境变量是这样的:

firebase functions:config:set gmail.email="myusername@gmail.com" gmail.password="secretpassword"

我在使用 firebase serve 时将我的功能部署到 firebase 出现错误:
-TypeError:无法读取未定义的属性“电子邮件”

当我检查 firebase 函数时:config:get 它显示了正确的数据
webapp 本身尚未部署(可能是这样吗？)

任何想法/帮助将不胜感激
谢谢

Answer 1

如果您希望使用 firebase serve 对函数进行本地模拟要获取环境变量，您需要遵循 documentation 中的这条指令:

If you're using custom functions configuration variables, run the following command in the functions directory of your project before running firebase serve.

firebase functions:config:get > .runtimeconfig.json

However, if you're using Windows PowerShell, replace the above command with:

firebase functions:config:get | ac .runtimeconfig.json