#504 — September 4, 2020

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JavaScript Weekly

Underscore.js 1.11.0: The Long Standing Functional Helper Library Goes Modular“Underscore!?” I hear some of our longer serving readings exclaiming. Yes, it’s still around, still under active development, and still a neat project at a mere 11 years old. As of v1.11.0 every function is now in a separate module which brings treeshaking opportunities to all, but there’s also a monolithic bundle in ES module format for those who prefer that. This article goes into a lot more depth about the new modular aspects.

Jeremy Ashkenas

Mastering the Hard Parts of JavaScript — A currently 17-part blog post series written by someone taking Frontend Masters’ JavaScript: The Hard Parts course and reflecting on the exercises that have helped them learn about callbacks, prototypes, closures, and more.

Ryan Ameri

FusionAuth Now Offers Breached Password Detection and LDAP — FusionAuth is a complete identity and access management tool that saves your team time and resources. Implement complex standards like OAuth, OpenID Connect, and SAML and build out additional login features to meet compliance requirements.

FusionAuth sponsor

How Browsers May Throttle requestAnimationFramerequestAnimationFrame is a browser API that allows code execution to be triggered before the next available frame on the device display, but it’s not a guarantee and it can be throttled. This post looks at when and why.

Matt Perry

Brahmos: Think React, But Without the VDOM — An intriguing user interface library that supports the modern React API and native templates but with no VDOM.


NativeScript 7.0: Create Native iOS and Android Apps with JS — A signficant step forward for the framework by aligning with modern JS standards and bringing broad consistency across the whole stack. Supports Angular, Vue, and you can even use TypeScript if you prefer.


⚡️ Quick bytes:

💻 Jobs

Senior JavaScript Developer (Warsaw, Relocation Package) — Open source rich text editor used by millions of users around the world. Strong focus on code quality. Join us.


JavaScript Developer at X-Team (Remote) — Join the most energizing community for developers and work on projects for Riot Games, FOX, Sony, Coinbase, and more.


Find a Job Through Vettery — Create a profile on Vettery to connect with hiring managers at startups and Fortune 500 companies. It's free for job-seekers.


📚 Tutorials, Opinions and Stories

Designing a JavaScript Plugin System — jQuery has plugins. Gatsby, Eleventy, and Vue do, too. Plugins are a common way to extend the functionality of other tools and libraries and you can roll your own plugin approach too.

Bryan Braun

▶  Making WAVs: Understanding, Parsing, and Creating Wave Files — If you’ve not watched any of the Low Level JavaScript videos yet, you’re missing a treat. But this is a good place to start, particularly if the topic of working with a data format at a low level appeals to you.

Low Level JavaScript

Breakpoints and console.log Is the Past, Time Travel Is the Future — 15x faster JavaScript debugging than with breakpoints and console.log.

Wallaby.js sponsor

The New Logical Assignment Operators in JavaScript — Logical assignment operators combine logical operators (e.g. ||) and assignment expressions. They're currently at stage 4.

Hemanth HM

Eight Methods to Search Through JavaScript Arrays

Joel Thoms

TypeScript 4.0: What I’m Most Excited About — Fernando seems particularly enthused about the latest version of TypeScript!

Fernando Doglio

Machine Learning for JavaScript Devs in 10 Minutes — Covers the absolute basics but puts you in a position to move on elsewhere.

Allan Chua

How to Refactor a Shopify Site for JavaScript Performance

Shopify Partners sponsor

'TypeScript is Weakening the JavaScript Ecosystem' — Controversial opinion alert, but we need to balance out the TypeScript love sometime.

Tim Daubenschütz

▶  Why I’m Using Next.js in 2020 — Lee makes the bold claim that he thinks “the future of React is actually Next.js”.

Lee Robinson

Building a Component Library with React and Emotion

Ademola Adegbuyi

Tackling TypeScript: Upgrading from JavaScript — You’ll know Dr. Axel from Deep JavaScript and JavaScript for Impatient Programmers.. well now he’s tackling TypeScript and you can read the first 11 chapters online.

Dr. Axel Rauschmayer

Introducing Modular Underscore — Just in case you missed it in the top feature of this issue ;-)

Julian Gonggrijp

🔧 Code & Tools

CindyJS: A Framework to Create Interactive Math Content for the Web — For visualizing and playing with mathematical concepts with things like mass, springs, fields, trees, etc. Lots of live examples here. The optics simulation is quite neat to play with.

CindyJS Team

Print.js: An Improved Way to Print From Your Apps and Pages — Let’s say you have a PDF file that would be better to print than the current Web page.. Print.js makes it easy to add a button to a page so users can print that PDF directly. You can also print specific elements off of the current page.


AppSignal Is All About Automatic Instrumentation and Ease of Use — AppSignal provides you with automatic instrumentation for Apollo, PostgreSQL, Redis, and Next.js. Try us out for free.

AppSignal sponsor

Volt: A Bootstrap 5 Admin Dashboard Using Only Vanilla JS — See a live preview here. Includes 11 example pages, 100+ components, and some plugins with no dependencies.


Stencil 2.0: A Web Component Compiler for Building Reusable UI Components — Stencil is a toolchain for building reusable, scalable design systems. And while this is version 2.0, there are few breaking changes.


NgRx 10 Released: Reactive State for Angular


🆕 Quick releases: