Must Read
Jest 24 Released: The JS Testing Framework
It’s been 8 months since the last major release and it’s a big one with built-in support for TypeScript, improved assertion messages, and a fix for an annoying console.log bug, plus it gets a new Web site.
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Learn
Type-Driven Development: Replacing Unit Tests with Types in TypeScript
Unit tests are great. But on TypeScript projects, many of them can be replaced with explicit type definitions.
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JavaScript code error
How to solve this JavaScript error? var x = 1; function add Two(){ var x = x +2; } add Two(); x = x+1; console.log(x); I am getting an error when i run the code ?
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Tools & Code
Relay: A Framework for Building Data-driven React Applications
Version 2 just came out and now uses the new Context API rather than the legacy one. It also steps up to React 16.
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TypeScript 3.3 Improves Calling Union Types and Build Times
TypeScript 3.0 added support for composite projects allowing large projects to be separated into smaller projects to improve build times with the --build mode, recompiling only the necessary subset of projects and dependencies to optimize inter-project builds.
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Readability.js: Extract the Readable Content from an HTML Document
A standalone version of the library used to power Firefox’s Reader View.
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Interesting Links
Learning programming languages for free: GitHub's best courses and guides for JavaScript developers
The five highest-ranked collections of resources for learning JavaScript available via GitHub.
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Misc
Asynchronous JavaScript
Join 10,000+ people learning about asynchronous programming and leverage promises in JavaScript from this course at Codecademy.
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