如何將express-mailer配置移動到單獨的文件？

Question

在這個NPM包的文檔： https://www.npmjs.com/package/express-mailer

配置必須在app.js文件：

// project/app.js 

var app = require('express')(), 
    mailer = require('express-mailer'); 

mailer.extend(app, { 
    from: 'no-reply@example.com', 
    host: 'smtp.gmail.com', // hostname 
    secureConnection: true, // use SSL 
    port: 465, // port for secure SMTP 
    transportMethod: 'SMTP', // default is SMTP. Accepts anything that nodemailer accepts 
    auth: { 
    user: 'gmail.user@gmail.com', 
    pass: 'userpass' 
    } 
}); 

但是我有這樣的結構：

app_dir 
    config_dir 
     mail.js 
    app.js 

而且需要把這個塊在mail.js

這是可能的嗎？

感謝

Answer 1

使用JS配置（你想要的）

// project/config_dir/mail.js 

module.exports = { 
    from: 'no-reply@example.com', 
    host: 'smtp.gmail.com', // hostname 
    secureConnection: true, // use SSL 
    port: 465, // port for secure SMTP 
    transportMethod: 'SMTP', // default is SMTP. Accepts anything that nodemailer accepts 
    auth: { 
    user: 'gmail.user@gmail.com', 
    pass: 'userpass' 
    } 
} 

// project/app.js 

var app = require('express')(), 
    mail_config = require('./config_dir/mail'); 
    mailer = require('express-mailer'); 

mailer.extend(app, mail_config); 

使用JSON配置

// project/config_dir/mail.json 

{ 
    from: "no-reply@example.com", 
    host: "smtp.gmail.com", 
    secureConnection: true, 
    port: 465, 
    transportMethod: "SMTP", 
    auth: { 
    user: "gmail.user@gmail.com", 
    pass: "userpass" 
    } 
} 

// project/app.js 

var app = require('express')(), 
    mail_config = require('./config_dir/mail.json'); 
    mailer = require('express-mailer'); 

mailer.extend(app, mail_config);