Today, you can't do anything in JavaScript without bumping into a CLI.

Want to install a library? yarn add it. Want a React app? create-react-app. Want to format your JavaScript? prettier --write. Want your types checked? tsc. Bundling? Pick from webpack, rollup, or parcel. Deploying? now or netlify deploy.

CLI's are everywhere, and even if you don't write them, sooner or later you'll have to debug them.

This workshop serves as a comprehensive survey of the state of the art of CLI tooling for everyone looking to make an impact in open source, across their company, and even in their own productivity.react javascript typescript

About two years ago, I begrudgingly opened Visual Studio Code (VS Code) for the first time. The only reason I even did so is that I was working on a TypeScript project (also quite begrudgingly) and I was tired of fighting with the editor and the compiler and all of the settings that I needed to make a TypeScript project work. Someone mentioned to me that TypeScript “just works” in VS Code and I was pleasantly surprised to find that they were right.

I expected that though. VS Code is from Microsoft, so it’s entirely expected that TypeScript would just work. What I did not expect was that virtually anything that I needed to do in VS Code “just worked” too. And I do mean anything. While this article focuses primarily on features for the web as well as JavaScript developers, VS Code has integrations with Go, Python, Java, and Ruby — just to name a few.

Over the next few months, I began to discover things in VS Code that I found remarkable. I made the official switch to VS Code, and I haven’t looked back since. Over the months I’ve been compiling a list of my favorite tips, tricks, and extensions for VS Code that might leave you with the same reaction that I had and continue to have: “VS Code can do that?!”microsoft ruby react javascript typescript

Today, I’ll give some examples for creating forms in flutter. If you don’t know Flutter, you can start in here. The Flutter is a mobile SDK for creating mobile applications by fast. It can craft a application on iOS and Android devices with one code and this framework has full native performance!

A good news!

Flutter is in beta. Do not worry about beta because when Flutter in alpha, it used applications in production by Google. These applications downloaded and used by millions. Yes, Flutter is Google mobile UI Framework. Flutter using Dart language. It’s like Typescript or Javascript (my idea). And in the beta version, you can use Dart v2 in Flutter. I updated Flutter version in my computer using by this document. It’s easy.

Flutter has widgets for UI and we use Form and Field widgets today for creating a log in form. So first you need to look Flutter input widgets page. It has Form widget and FormField widget.news javascript typescript flutter

TypeScript is a superset of JavaScript which primarily provides optional static typing, classes and interfaces. Since 2012, TypeScript has been a popular choice for programmers coming to JavaScript from more structured languages.

One of the benefits of TypeScript is better tooling. TypeScript enables IDEs to provide a richer environment for spotting common errors as you type the code (vs running a tool after you’ve finished the code). Also you get to use Visual Studio Code — a performant editor that comes with in-build integration for TypeScript. For a large JavaScript project, adopting TypeScript might result in more robust software, while still being deployable where a regular JavaScript application would run. Backward compatibility with the JavaScript versions is another advantage of using TypeScript.react javascript typescript

Mastering asynchronous code execution is fundamental to becoming a great TypeScript developer. In this course we show how TypeScript enables you to write asynchronous code with complete type safety and great runtime support thanks to TypeScript’s understanding of the async / await pattern.

In this course we will cover concepts like Promises, generators and how they enable the runtime environment to allow authoring asynchronous code just as beautifully as synchronous code.typescript

React provides are powerful paradigm for creating UI applications with JavaScript. TypeScript can greatly increase the maintainability of React applications by opening up sytax for self documenting code.

In this course we will cover how to setup a React application with TypeScript and use TypeScirpt for React applicationsreact javascript typescript

Starts and ends with JavaScript

TypeScript starts from the same syntax and semantics that millions of JavaScript developers know today. Use existing JavaScript code, incorporate popular JavaScript libraries, and call TypeScript code from JavaScript.

TypeScript compiles to clean, simple JavaScript code which runs on any browser, in Node.js, or in any JavaScript engine that supports ECMAScript 3 (or newer).

Strong tools for large apps

Types enable JavaScript developers to use highly-productive development tools and practices like static checking and code refactoring when developing JavaScript applications.

Types are optional, and type inference allows a few type annotations to make a big difference to the static verification of your code. Types let you define interfaces between software components and gain insights into the behavior of existing JavaScript libraries.

State of the art JavaScript

TypeScript offers support for the latest and evolving JavaScript features, including those from ECMAScript 2015 and future proposals, like async functions and decorators, to help build robust components.

These features are available at development time for high-confidence app development, but are compiled into simple JavaScript that targets ECMAScript 3 (or newer) environments.test javascript node

One thing that distinguishes JavaScript from other programming languages is that JavaScript isn’t just one language: it’s actually more like a family of closely related cousins.

What started with CoffeeScript back in 2009 has become an explosion of choice over the past couple years: ES6, TypeScript, Elm… they all have their strengths, and they all compile down to good old JavaScript.

So after last week’s look at front-end frameworks, let’s look at what the State Of JavaScript survey can tell us about JavaScript Flavors.javascript

So, you’re starting a brand new JavaScript front end project or overhauling an old one, and maybe you haven’t kept up with the breakneck pace of the ecosystem. Or you did, but there’s too many things to choose from. React, Flux, Angular, Aurelia, Mocha, Jasmine, Babel, TypeScript, Flow, oh my! By trying to make things simpler, some fall into a trap captured by one of my favorite XKCD comics.es2015 react

Wallaby.js is an intelligent and super fast test runner for JavaScript that continuously runs your tests. It reports code coverage and other results directly to your code editor, immediately as you change your code. Wallaby.js is insanely fast, because it only executes tests affected by your code changes and runs your tests in parallel. The tool provides a huge productivity boost whether you are doing TDD/BDD or using any other approach.es2015 test