node_utils

some useful es6/es7 untils and api for node.js

Entry

• 1.MailSender
• 2.ChildProcessor

Env

node.js: v7.8.0	
npm: v4.2.0
yarn: v0.24.2 

Basic modules

config: for configuration github地址
eslint: check code styles github地址
mocha: unit test github地址
should.js: BDD style assertions for node.js github地址
bunyan: log libary form node.js github地址
lodash: A modern JavaScript utility library delivering modularity, performance & extras. github地址

Code Styles

Use airbnb eslint code styles

Utils

1. MailSender

Modules:

nodemailer

Config:

{
  "mailConfig": {
    "service": "163",
    // "port": "25",
    // "host": "smtp.163.com",
    "auth": {
      "user": "mailsender999@163.com",
      "pass": "******"  //  163邮箱需使用授权码作为密码，其他邮箱待测
    }
  },
  "mailMaxRetry": 5
}

Example:

• async/await

    const EmailSender = require('./lib/EmailSender');
    let sendEmailAsync = async () => {
  		let emailSender = new EmailSender();
  		let result = {};
          const mail = {
        	from: '"MailSender" <mailsender999@163.com>', //  发件人
        	to: '826891502@qq.com',  // 收件人
        	cc: '',  // 抄送
        	subject: 'Test mail sender',  //  主题
        	text: 'Plaintext version of the message',  // 正文
        	// html: '<p>HTML version of the message</p>'  // html正文
          };
          try {
        	result = await emailSender.sendMail(mail);
        	console.log(result);
        	  } catch (e) {
        	console.error(e);
          }
    };
    
    sendEmailAsync();
  

• Promise

    let emailSender = new EmailSender();
    const mail = {
      from: '"MailSender" <mailsender999@163.com>', //  发件人
      to: '826891502@qq.com',  // 收件人
      cc: '',              // 抄送
      subject: 'Test mail sender',  //  主题
      text: 'Plaintext version of the message',  // 正文
      // html: '<p>HTML version of the message</p>'  // html正文
    };
    emailSender.sendMail(mail)
      .then((result) => { console.log(result); })
      .catch((error) => { console.error(error); });
  

Attention: 163邮箱开启授权码设置

2. ChildProcessor

Effectively prevent Windows Chinese garbled

Methods:

• exec()
• execFile()
• spawn()

参数详见node:child_process

对于child_process方法的选择详见：我的blog

Example:

• exec()

    const ChildProcessor = require('./lib/ChildProcessor');
    
    let exec = async () => {
      let cp = new ChildProcessor();
      try {
        let result = await cp.exec('git status');
        console.log(result);
      } catch (e) {
        console.log(e);
      }
    };
    
    exec();
  

• execFile()

    const ChildProcessor = require('./lib/ChildProcessor');
    
    let execFile = async () => {
      let cp = new ChildProcessor();
      try {
        let result = await cp.execFile('node', ['-h']);
        console.log(result.stdout);
      } catch (e) {
        console.log(e);
      }
    };
    
    execFile();
  

• spawn()

    const ChildProcessor = require('./lib/ChildProcessor');
    
    let spawn = async () => {
      let cp = new ChildProcessor();
      try {
        let result = await cp.spawn('cmd', ['/c', 'dir']);
        console.log(result.stdout);
      } catch (e) {
        console.log(e);
      }
    };
    
    spawn();