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Types, Typewiz, Open source & more… Node News Thursday, March 1

Node News TLDR / Table of Contents

  • So for example, given the following code: – function calculate(a, b) { – return a + b; – }calculate(5, 10);The output of TypeWiz would be: – function calculate(a: number, b: number) { – return a + b; – }calculate(5, 10);(Note the addition of: number type annotations in the first line.)…
  • If you want a fun exercise, lets see if you can figure out just by reading this code the types of the parameters the following function expects: – function(a,b,c,d,e) { – return d+=c,e=a|bd,d0|abd – b=new credit: Binary Tetris by Martin Kleppe) – Thats why I created TypeWizI want to make…
  • Using TypeWiz on YourProjectsThe core of TypeWiz is a library that instruments your TypeScript code to collect type information in run-time, and then applies the types that were collected to your source code.
  • If you use the Mocha test runner, you can instruct it to instrument the files with TypeWiz and apply the discovered type information back to your source code automatically by adding – -r typewiz-node/dist/register to your mocha command, e.g.: – mocha -r typewiz-node/dist/register src/**/*.
  • It also periodically reports all the discovered type information by posting it to a special HTTP endpoint (/__typewiz_report), which then saves it to a file running Webpack with TypeWiz for some time, you can apply the discovered type information to your source code by running the following command (its a…

Tags: types, typewiz, function, code, type information

  • Node.js Top 10 Open Source for the Past Month (v.Feb2018)This is a new monthlyseriesFor the past month, we ranked nearly 250 Node.js Open Source Projects to pick the Top 10.
  • We compared projects with new or major release during this period.
  • Average number of Github stars in this edition: 6,870 Watch Node.js Top 10 Open Source on Github and get email once a month.Topics: ORM, Performance, Bot, Headless Chrome, Scratchpad, CLI, Dashboard, async, Web Screenshots, ConsoleOpen source projects can be useful for programmers.
  • Hope you find an interesting project that inspires you.
  • Objection.JS: An SQL-friendly Object-relational mapping for Node.js [2319 stars on Github].

Tags: open source, open source projects, Node.js Open Source, best daily articles, Node.js Monthly Open

  • You start a new course, and the instructor has you installing a bunch of libraries before you even know what Node is or how it works.
  • The Complete Node.js Developer Course 2 covers the fundamentals of Node before diving deep into great tools like Express, Mongoose, and MongoDB.
  • The entire course is based around a single goal: Turning you into a professional Node developer capable of developing, testing, and deploying real-world production applications.
  • Youll be building four projects: – A note-taking app to get your feet wetA weather application that interacts with Google Maps and Dark Sky APIA to-do REST API complete with user accounts and authenticationA real-time chat app with a client-side companionBy the end, youll be able to take what youve…
  • This course is compatible with Node.js version 8, the newest Node version available.

Tags: Node, Node version, professional Node developer, up-to-date Node material, newest Node version

  • Keeping your secretssecretCredentials are usually hidden in environment variables that your application can pick up when it runs.
  • Our code now looks like this: – We expect an environment variable called MYAPIKEY to be there when our code runs.
  • Setting environment variablesOn the command-line, environment variables can be set using export on Mac/Linux and set on Windows e.g. – export MYAPIKEY=ndsvn2g8dnsb9hsgOnce set, you can run your application in the usual way e.g node app.js.
  • env file at the top of your project containing the environment variables you want to set: – MYAPIKEY=ndsvn2g8dnsb9hsg – DEBUG=true – DEBUGLEVEL=5Then at the entry point in your code loads the values from the.
  • Environment variables inBluemixBluemix sends its configuration to its CloudFoundry applications through environment variables: – VCAP_SERVICES – a JSON-encoded object describing the services that are paired with your applicationVCAP_APPLICATION – a JSON-encoded object describing your application’s meta datacustom environment variables can be defined in the Bluemix dashboard and are available to…

Tags: environment variables, API key, CloudFoundry environment variables, secret API key, external API

  • Also, in most architectures these headers can be set in web server configuration (Apache, nginx), without changing actual application’s code.
  • The importance of secure use of cookies cannot be understated: especially within dynamic web applications, which need to maintain state across a stateless protocol such as HTTP.
  • Cross-Site Request Forgery is an attack that forces a user to execute unwanted actions on a web application in which they’re currently logged in.
  • In Node.js to mitigate this kind of attacks you can use the csrf module.
  • Stored Cross site scripting occurs when the application stores user input which is not correctly filtered.

Tags: user input, brute force, node security project, web application, Security HTTP Headers

Top Node Courses

The Complete Node.js Developer Course (2nd Edition) (60,232 students enrolled)

By Andrew Mead
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  • Create real-time web apps with SocketIO

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Angular (Angular 2+) & NodeJS - The MEAN Stack Guide (26,806 students enrolled)

By Maximilian Schwarzmüller
  • Build real Angular + NodeJS applications
  • Understand how Angular works and how it interacts with Backends
  • Connect any Angular Frontend with a NodeJS Backend
  • Use MongoDB with Mongoose to interact with Data on the Backend
  • Use ExpressJS as a NodeJS Framework
  • Provide a great user experience by using Optimistic Updating on the Frontend
  • Improve any Angular (+ NodeJS) application by adding Error Handling

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