Front End Tools & Docs 
Accessibility
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Accessible Slick
A highly accessible, WCAG 2.0 / 2.1 compliant, drop-in replacement for Slick Slider (1.8.1) crafted and tested by expert users and professional accessibility consultants, intended to make life easier for real-world dev teams who need to pass accessibility audits.
TypeScript
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Front End Masters
Use TypeScript to add strong typing to large JavaScript apps helps reduce bugs and keeps code performant and maintainable. Learn key Typescript features such as typing variables and function signatures, abstract classes, interfaces, enums, and more – these features increase your ability to fix errors fast. Learn how to migrate your codebase to TypeScript the smart way and improve productivity while building large-scale TypeScript applications with ease!
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Learn TypeScript
This tutorial is aimed at people who are fairly proficient in JavaScript but are still beginners when it comes to TypeScript. We've covered most of the basics and key features while including lots of examples with commented code to help you see the language in action. Let's begin!
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Class vs Interfaces in TypeScript
Classes and interfaces are powerful structures that facilitate not just object-oriented programming but also type-checking in TypeScript. A class is a blueprint from which we can create objects that share the same configuration - properties and methods. An interface is a group of related properties and methods that describe an object, but neither provides implementation nor initialisation for them.
CSS
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Font Loading
A deep dive into various font loading strategies.
Fonts
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Font Style Matcher
If you're using a web font, you're bound to see a flash of unstyled text (or FOUC), between the initial render of your websafe font and the webfont that you've chosen. This usually results in a jarring shift in layout, due to sizing discrepancies between the two fonts. To minimize this discrepancy, you can try to match the fallback font and the intended webfont’s x-heights and widths [1]. This tool helps you do exactly that.