Microsoft spills the tea on TypeScript

#​655 — September 21, 2023

Read on the Web

JavaScript Weekly

▶  TypeScript Origins: The Documentary — You know you’ve made it when you get your own documentary! This has just dropped but is well produced, packed with stories from TypeScript’s co-creators, users, and other folks at Microsoft, and kept me entertained. It goes particularly deep into the motivations and process behind its creation, including why Microsoft felt it was worth pursuing.

OfferZen Origins

🔥 The takes get spicer 25+ minutes in as various TypeScript users chip in with their opinions, and even Daniel Rosenwasser, now program manager of the TypeScript team, says he initially worried that Microsoft might “f**k it all up.” 😅 Ryan Dahl pops up about an hour in too.. so I hope you’ve got some time spare.

Patterns for Reactivity with Modern Vanilla JavaScript — When data changes, you often want to do things, and the process that makes that happen is reactivity. While many libraries or frameworks like React or Vue offer reactive solutions out of the box, you can do it all with vanilla JavaScript too, and this post digs into many of the patterns you might need to use, complete with examples.

Marc Grabanski

Handsontable: Data Grid With Spreadsheet Superpowers — There are a lot of JavaScript data grids out there, but none are quite like Handsontable. Its Excel-like design, keyboard shortcuts, and navigation make it the perfect tool for developers.

Handsontable sponsor

Deno 1.37: Modern JavaScript in Jupyter Notebooks — Not content to let Bun take all the headlines, Deno has come up with something pretty neat here. Deno 1.37 ships with a Jupyter Notebook integration so you can create interactive REPL sessions but using the JavaScript you know and love, rather than Python.

The Deno Team

JavaScript Minification Benchmarks — A frequently updated benchmark suite and results comparing the speed and quality of JavaScript minification across a variety of tools including esbuild, Babel, Bun, SWC, and Uglify.

Hiroki Osame

⚡️ IN BRIEF:

The Svelte team offers a sneak peek at the forthcoming Svelte 5 and introduces the idea of ‘runes’: “Like every other framework, we’ve come to the realisation that Knockout was right all along.”

Happy 27th birthday to JScript! JScript was a version of JavaScript that Microsoft put into IE 3.0 primarily to avoid trademark issues around the name of JavaScript. No-one cares much about that anymore, despite Oracle still technically holding the JavaScript trademark.

Folks are discussing whether Node.js needs a mascot of its own.

Want to support anyone doing great work on JavaScript projects? You can nominate them for a GitHub Star.

If you rely upon the npm package download counts at all, the daily counts for all packages was zero on September 13 and 14 (example). Why? “This issue remains under investigation,” says npm support.

🎉 RELEASES:

Remix v2 – Popular full stack web framework.

Bun 1.0.2 – Bugfixes, faster bun –watch, it now uses V8’s Date parser, and Fastify apps now work too.

Node.js v20.7 (Current) – Multiple –env-files now supported.

Next.js 13.5 – Faster, faster, faster.

📒 Articles & Tutorials

Getting Network Activity Under Control with Priority Hints — A look at how browsers can prioritize the loading of resources, how you can explicitly specify a priority when using fetch, and how different ways of loading scripts are prioritized.

Alex MacArthur

Securing Node Apps by Analyzing Real Command Injection Examples — When code can be manipulated to run unintended, arbitrary commands, it’s never going to end well.

Liran Tal

🚀  Coming Soon: Fixed-Cost Monthly Maintenance by UpgradeJS.com — Too much tech debt in your JavaScript app? Let us help. Slow and steady upgrades at your own pace. Releasing next week.

🌳 Bonsai by UpgradeJS.com sponsor

🧭  What’s New in Safari 17 — Safari 17 is now in beta on iOS 17 with the final release dropping across all of Apple’s platforms next week. On the JavaScript front, Safari and WebKit now fully support the Storage API, WebGL in Offscreen Canvas, v flag support on regexes, Set operation methods, URL.canParse, plus the much anticipated support for PWAs in macOS Sonoma.

Jen Simmons and the WebKit team

Testing Out the Alpine.js Intersect Plugin — A wrapper for the Intersection Observer API.

Raymond Camden

▶  How to Make Forms in Angular Reusable

Decoded Frontend

Clean Layout Architecture for Vue Applications

Fotis Adamakis

Incremental Static Regeneration for Angular

Enea Jahollari

🛠 Code & Tools

fx 30: The Go(lang)-Powered Terminal JSON Viewer — Yes, it’s written in Go, but fx has long been a useful tool for looking at JSON files, and it has just been rewritten from the ground up with a new look, regex search, fuzzy search, and support for “even the most massive JSON files.” You don’t need to worry about Go at all; it’s simply a fantastic tool for looking at JSON.

Anton Medvedev

Breakpoints and console.log Is the Past, Time Travel Is the Future — 15x faster JavaScript debugging than with breakpoints and console.log, supports Vitest, jest, karma, jasmine, and more.

Wallaby.js sponsor

Mantine 7.0: The Popular React Component Library — A big release for what is now one of the most popular React component libraries. As of v7, Mantine no longer relies on Emotion and components come with native CSS files, all components now support the system-set color scheme, CSS modules are now the default way to style components, and there are many smaller enhancements too.

Mantine Team

Chrono 2.7: A Natural Language Date Parser — Give it a string like “today”, “last Friday”, “2 weeks from now”, or even an entire date and time, and it’ll come up with a date object to suit.

Wanasit Tanakitrungruang

Theatre.js 0.7: Motion Design for the Web — Can be used both programmatically or via a visual editor to animate objects created with things like Three.js, React Three Fiber, HTML/SVG, or even just tween variable values.

Theatre.js Project

Track Errors and Performance Issues in Every Part of Your Stack

Sentry sponsor

Swup: A Flexible Page Transition Library for Server-Side Rendered Sites — A library that benefits hugely from checking out the demos. v4.4 adds experimental ViewTransition support.

Georgy Marchuk

Create Chrome Extension: A Scaffolding Tool for Chrome Extensions — Similar to create-react-app or Yeoman, this is specifically for starting extension development, with support for several frameworks, HMR, and light/dark modes.

Yalda

💡 Chrome Extension CLI is another option in this space.

Neutralinojs 4.14.0 – Imagine something like Electron but without the browser engine being bundled in. Supporting Linux, Windows, and macOS, it instead leans on what’s already present.

📅 React Lite Month Picker
↳ An elegant way to let users select a specific month.

React-Virtuoso 4.6 – Powerful virtual list component.

Faker 8.1 – Generate large amounts of fake data.

🔊 Peaks.js 3.1
↳ The BBC’s audio waveform UI component.

Ember.js 5.3

💻 Jobs

Nest.js Back-End Developer — Lead the development of a HealthTech platform, focused on Caregiver support. TypeScript, Nest.js, PostgreSQL, AWS, React/Next.js.

Carallel

Find JavaScript Jobs with Hired — Hired makes job hunting easy-instead of chasing recruiters, companies approach you with salary details up front. Create a free profile now.

Hired

“The best programs are the ones written when the programmer is supposed to be working on something else.”

___
Melinda Varian

New JavaScript features of the past few years

#​629 — March 10, 2023

Read on the Web

JavaScript Weekly

JavaScript Features from the Past Few Years — Packed with examples, this post tackles the changes and tweaks to JavaScript and TypeScript over the past several years (some as far back as ES6/ES2015, like tagged template literals).

Linus Schlumberger

Astro’s 2023 Web Framework Performance Report — The folks working on Astro looked at data from thousands of sites to understand how sites built around Astro, Gatsby, Next.js, Nuxt, Remix, SvelteKit and WordPress perform on common Web performance metrics. Shipping less JS equals more performance.

Fred Schott (Astro)

In other Astro related news, Astro 2.1 has just been released with experimental automatic image optimization support, plus they’ve visually rebranded the project.

A Fresh Introduction to Next 13+ — Learn Next.js, the complete full-stack framework to create basic blog websites up to full-blown apps and APIs! Plus if you are already familiar with Next.js, we have a course building a full app on Next 13+.

Frontend Masters sponsor

TypeScript’s Migration to Modules — TypeScript has restructured its codebase to use ES modules. For this, we get smaller package sizes, quicker build times, and little disruption to end users. A CommonJS API is provided for now so that build scripts don’t break. This post goes deep in to what the move entailed.

Daniel Rosenwasser and Jake Bailey

IN BRIEF:

A quick look at the 12 most popular Node.js frameworks, as of 2023. Don’t feel left out if you prefer Deno, there’s a roundup of Deno frameworks, too.

Jest 29.5 has added a feature to randomize the order in which tests are run – why? Your tests should be isolated and not depend upon each other – this will unearth any problems.

Three things are certain: death, taxes, and jQuery. Still the most heavily deployed JS library, jQuery 3.6.4 has been released with a reversion to how it determines browser support for CSS selection features.

???? UtahJS Conf 2023 is taking place in September, and their call for speakers is open till April 3.

???? A neat approach to creating a static, password protected page with AES‑256.

The folks at Moddable went to FOSDEM to make the case for using JavaScript in embedded systems.

RELEASES:

TestCafe 2.4 – E2E web testing tool now with a visual selector debugger.

SWR 2.1 – React hooks for data fetching. Now with subscription mode.

Mantine 6.0
↳ 100+ React component library.

Node.js 18.15.0 (LTS)

Ember.js 4.11

???? Articles & Tutorials

Common Beginner Mistakes with React — Experienced React educator Josh has seen all the problems people encounter and here he digs into “9 of the most dastardly gotchas” and how to resolve them.

Josh W Comeau

▶  Coding Kenta Toshikura’s Glass Effect with Three.js — Yet more creative noodling with Three.js and shaders that goes over my head.

Yuri Artiukh

React Authentication, Simplified — In this article, we lay out a new approach to authentication (plus access control & SSO) in React applications.

Userfront sponsor

How to Change the Favicon When Switching Browser Tabs — Originally inspired by Astro, you can see the concept at work on notepad.js.org

Amit Merchant

▶  Progressive Web Apps (PWA) for Beginners — Beginner-focused series on building PWAs, covering their capabilities, pros and cons, and more over 17 videos.

Microsoft Developer

How to Make Slow React Native Apps Faster — The folks over at Retool recently released an app to build native apps in a similar way to Web-based ones. This post covers a few optimizations they made to make it app faster.

James Lee (Retool)

Full-Stack TypeScript with tRPC and React — How to create a CRUD app with Express on the server and React on the client using tRPC to communicate between the two.

Robin Wieruch

Building an Image Recognition App with Pinecone, Hugging Face, and Vercel

Roie Schwaber-Cohen

Using Zod and TypeScript for More Than User Input Validation

Sebastien Castiel

Building Complex Forms in Vue

Olufunke Moronfolu

???? Code & Tools

HuggingFace.js: Use Lots of ML Models from JavaScriptHugging Face is a popular online community and repository of machine learning models. The goal of this library is to open up those models more easily to JavaScript.

Hugging Face

Dynaboard: A Visual Web App IDE Made for Developers — Build high performance public and private web applications in a collaborative — full-stack — development environment.

Dynaboard sponsor

Chrono: A Natural Language Date Parser — Give it a string like “today”, “last Friday”, “2 weeks from now”, or even an entire date and time, and it’ll come up with a date object to suit.

Wanasit Tanakitrungruang

Embetty 4.0: A Privacy-Conscious Way to Show Third Party Embeds — Tweets, and Facebook, Video or YouTube thumbnails (see demo here.) The privacy comes from using a proxy server you host yourself.

heise online

Finder 3.0: CSS Selector Generator — Given an element, it produces the shortest possible selector that reaches (solely) that element.

Anton Medvedev

Tuple, a Lightning-Fast Pairing Tool Built for Remote Developers

Tuple sponsor

Feathers 5: Node.js API & Real-Time App FrameworkFeathers is a great option if you want to spin up a CRUD app tied to a database and now it’s “TypeScript all the way down” too (you can choose to use JS, as you prefer). Leap into the quick start guide to see what it’s about.

David Luecke

FormKit: The Open-Source Form Framework for Vue — Ships with production-ready scaffolding like inputs, forms, submission and error handling, and validation rules.

FormKit, Inc.

???? Jobs

Software Engineer — Join our happy team. Stimulus is a social platform started by Sticker Mule to show what’s possible if your mission is to increase human happiness.

Stimulus

Find JavaScript Jobs with Hired — Hired makes job hunting easy-instead of chasing recruiters, companies approach you with salary details up front. Create a free profile now.

Hired

????‍???? Got a job listing to share? Here’s how.

ClearScript 7.4
↳ MS library to add JS scripting to .NET apps.

Million 2.0
↳ Fast virtual DOM that makes React faster.

Video.js 8.2
↳ Flexible media player control.

Embla Carousel 7.1
↳ Smooth carousel library. (Examples.)

Deck.gl 8.9
↳ WebGL2-powered data viz framework.

MUI X 6.0
↳ Suite of advanced React UI components.

ReacType 14.0
↳ Rapid React prototyping tool.

Lebab 3.1.2
↳ Turn ES5 into ES6. It’s Babel backwards!

Rimraf 4.4
↳ Cross platform rm -rf for Node.js.

???? A Bonus Item

Ink 4.0: Use the React Approach for Building Interactive CLI Apps — Build your command line apps using React-style components. As of v4.0, Ink is now pure ESM, requires React 18, and requires Node 14.16+.

Vadim Demedes

11 Features in Node.js 18 you need to try

Node.js 18 LTS is now available. What’s new?

Node.js 18 was released on the 19th of April this year. You can read more in the official blog post release or in the OpenJS Blog announcement. The community couldn’t be more excited!

Here at NodeSource,releases are a big deal. As a team of experts, enthusiasts, and core contributors to the open-source project, we love seeing the progress of Node! We are also one of the primary distributors of the runtime and have been since version 0.x (2014).

Developers download and use our binaries worldwide for their production environments (over 100m a year and growing!). We are incredibly proud to support this important piece of the Node ecosystem in addition to building and supporting customers on our Node.js platform – N|Solid.

“If you use Linux, we recommend using a NodeSource installer.” – From the NPM Documentation

If you want to lend a hand, we welcome your ideas or solutions contact us, or if you would like to help us continue supporting open source, you can contribute with an issue here.

Overall, the community is looking forward to this release with many new features and other benefits in addition to the official release earlier this year that included:

Security: Upgrading to OpenSSL 3.0

APIs: Fetch API is Promise based, providing a cleaner and more concise syntax.

If you are interested in thinking about the future of Node, we recommend checking out The next-10 group. They are doing some great work thinking about the strategic direction for the next 10 years of Node.js. Their technical priorities are:

Modern HTTP, WebAssembly, and Types.
ECMAScript modules and Observability

_OpenJS Collaborator Summit 2022
_

But now I’m sure you want to get into the changes in v18. What has improved, and what are the new features? That’s what you’re here for 😉. So let us explain 👇

Hydrogen. What is it?

The codename for this release is ‘Hydrogen’. Support for Node.js 18 will last until April 2025. The name comes from the periodic table, and they have been used in alphabetical order (Argon, Boron, Carbon, Dubnium, Erbium…) 🤓 Read more in StackOverflow.

LTS?

According to the Node.js blog, the “LTS version guarantees that the critical bugs will be fixed for a total of 30 months and Production applications should only use Active LTS, or Maintenance LTS releases”. – https://nodejs.dev/en/about/releases/

In short, it focuses on stability and being a more reliable application after allowing a reasonable time to receive feedback from the community and testing its implementation at any scale.

_Nodejs Releases Screenshot 2022
_

How do I know what version of Node and LTS I have?

You can easily do it by typing in your console:

$ node –version

Run the following to retrieve the name of the LTS release you are using:

$ node -p process.release.lts

_Note: _ The previous property only exists if the release is an LTS. Otherwise, it returns nothing.

If you want to be aware of the release planning in the Node.js community, you can check here: Node.js Release Schedule.

What’s new in Node.js 18?

Contributors are constantly working to improve the runtime, introduce more features, and improve developer experience and usability. Today as the worldwide community uses JS for developing API-driven web applications and serverless cloud development, the changes in this new LTS version are important to understand.

In honor of the number 11 (__#funfact__ Undici means ‘eleven’ in Italian), we decided to make our top 11 Node.js 18 features:

Fetch API
🧪- – watch
🧪 OpenSSL 3 Support
🧪 node:test module
Prefix-only core Modules
🧪 Web Streams API
Other Global APIs: Blob and BrodcastChannel.
V8 Version 10.1
Toolchain and Compiler Upgrades
HTTP Timeouts
Undici Library

The idea of this blog post is to relevel the functionalities one by one, so let’s start:

Feature 1: Native Fetch API in Node.js 18

Finally, v18 provides native fetch functionality in Node.js. This is a standardized web API for conducting HTTP or other types of network requests. Previously Node.js did not support it by default. Because JavaScript is utilized in so many areas, this is fantastic news for the entire ecosystem.

Example:

Feature 2:–watch

Using –watch, your application will automatically restart when an imported file is changed. Just like nodemon. And you can use –watch-path to specify which path should be observed.

Also, these flags cannot be combined with –check, –eval, –interactive, or when used in REPL (read–eval–print loop) mode. It just won’t work.

You can now use Node Watch index on your file name to start watching your files without having to install anything.

Feature 3: OpenSSL 3 Support

OpenSSL is an open-source implementation of, among other things, SSL and TLS protocols for securing communication.

One key feature of OpenSSL 3.0 is the new FIPS (Federal Information Processing Standards) module. FIPS is a set of US government requirements for governing cryptographic usage in the public sector.

More information is available in the OpenSSL3 blog post.

Feature 4: The Experimental node:test

The node:test module facilitates the creation of JavaScript tests that report results in TAP (Test Anything Protocol) format. The TAP output is extensively used and makes the output easier to consume.

import test from node:test

This module is only available under the node:scheme.
Read more in Node.js Docs

This test runner is still in development and is not meant to replace other complete alternatives such as Jest or Mocha, but it provides a quick way to execute a test suite without additional third-party libraries. The test runner supports features like subtests, test skipping, callback tests, etc.

node:test and –test

node:assert

The following is an example of how to use the new test runner.

More information may be found in the Node.js API docs.

Feature 5: Prefix-only core Modules

A new way to ‘import’ modules that leverages a ‘node:’ prefix, which makes it immediately evident that the modules are from Node.js core

To learn more about this functionality, we invite you to read Colin Ihrig‘s article Node.js 18 Introduces Prefix-Only Core Modules.

Feature 6: Experimental Web Streams API

A Web Streams API is a set of streams API. Also experimental, it allows JavaScript to access streams of data received over the network programmatically and process them as desired. This means Stream APIs are now available on the global scope. This would help send the data packets in readable and writable streams.

Methods available are as follows,

ReadableStream

ReadableStreamDefaultReader

ReadableStreamBYOBReader

ReadableStreamBYOBRequest

ReadableByteStreamController

ReadableStreamDefaultController

TransformStream

TransformStreamDefaultController

WritableStream

WritableStreamDefaultWriter

WritableStreamDefaultController

ByteLengthQueuingStrategy

CountQueuingStrategy

TextEncoderStream

TextDecoderStream

CompressionStream

DecompressionStream

Feature 7: Other Global APIs

The following APIs in the Node v18 upgrade are exposed on the global scope: Blob and BroadcastChannel.

Feature 8: V8 Version 10.1

Node.js runs with the V8 engine from the Chromium open-source browser. This engine has been upgraded to version 10.1, which is part of the recent update in Chromium 101.

New array methods for finding the last element and index of an array. Array methods findLast and findLastIndex are now available.
Internationalization support: Intl.Locale and the Intl.supportedValuesOf functions.
Improving the performance of class fields and private class methods.
The data format of the v8.serialize function has changed (No compatible with earlier versions of Node.js.)

Keep an eye out here.

Feature 9: Toolchain and Compiler Upgrades

Node.js always provides pre-built binaries for various platforms. For every latest release, toolchains are evaluated and elevated whenever required. Node.js provides pre-built binaries for several different platforms. For each major release, the minimum toolchains are assessed and raised where appropriate.

Pre-built binaries for Linux are now built on Red Hat Enterprise Linux (RHEL) 8 and are compatible with Linux distributions based on Glibc 2.28 or later, for example, Debian 10, RHEL 8, Ubuntu 20.04.
Pre-built binaries for macOS now require macOS 10.15 or later.
For AIX, the minimum supported architecture has been raised from Power 7 to Power 8.

Note: Build-time user-land snapshot(Experimental)

Users can build a Node.js binary with a custom V8 startup using the
–-node-snapshot-main flag of the configure script.

Feature 10: HTTP Timeouts

The http.server timeouts have changed:

headersTimeout (the time allowed for an HTTP request header to be parsed) is set to 60000 milliseconds (60 seconds).

requestTimeout (the timeout used for an HTTP request) is set to 300000 milliseconds (5 minutes) by default.

Feature 11: Undici Library in Node.js

Undici is an official Node team library, although it’s more like an HTTP 1.1 full-fledged client designed from the ground up in Node.js.

Keep alive by default.
LIFO scheduling
No pipelining
Unlimited connections
Can follow redirected (opt-in)

Of note, we support and love Lizz‘s work, so we recommend you check out her fantastic talk in Nodeconf.EU about New and Exciting features in Node.js to understand more about this feature.

Other Features/Changes:

The project undoubtedly has some great challenges in the near future to continue growing and maintaining its leading position in the ecosystem. These are some of the upcoming features. Most of them are experimental; without being the only ones to discuss, there is much work and proposals from an active community such as the Node.js Community.

Default DNS resolution
ECMAScript modules improvements
Improved support for AbortController and AbortSignal
Updated Platform Support
Async Hooks
Direct Network Imports
Build-time user-land snapshot
Support for JSON Import Assertions
Unflagging of JSON modules (experimental)
Support for HTTPS and HTTP imports
Diagnostic Channel
Trace Events
WASI

You can check the full changelog here.

Final Remarks

Node.js 12 will go End-of-Life in April 2022.
Node.js 14 (LTS) or Node.js 16 (LTS) or Later Node.js 18 will be LTS.
Node.js 18 will be promoted to Long-term Support (LTS) in October 2022 (NOW).
After being promoted to LTS, Node.js 18 will be supported until April 2025.

Upgrade Now!

Moving to the LTS version is the best decision for you to include the following improvements in your development workflow:

FetchAPI and Web Streams
V8: New advanced features, array methods, improvements, and enhancements.
Test runner without the need for third-party packages.
Deprecated APIs: Check the list here

Enhancement in Intl.Locale API.
Performance improvement in both class fields and private class methods.

Migration

To migrate your version of Node, follow these steps:

For Linux and Mac users, follow these commands to upgrade to the latest version of Node. The module n makes version management easy:

npm install n -g

For the latest stable version:

n stable

For the latest version:

n latest

Windows Users
Visit the Node.js download page to install the new version of Node.js.

Special Thanks

With 99 contributors and 1348 commits Node.js 18 LTS came to life 🎉. Special thanks to @_rafaelgss @BethGriggs_ @_richard_lau_ To make this release happen 💚

$ nvm install 18.12.0

And thank you to all of Node.js project contributors. Our complete admiration and support for such incredible work 💪.

NodeSource Node.js Binary Distributions

NodeSource, from the beginning, was created with a great commitment to the developers’ community, which is why it has provided documentation for using the NodeSource Node.js Binary Distributions via .rpm, .deb as well as their setup and support scripts.

If you are looking for NodeSource’s Enterprise-grade Node.js platform, N|Solid, please visit https://downloads.nodesource.com/, and for detailed information on installing and using N|Solid, please refer to the N|Solid User Guide.

We are also aware that as a start-up, you want ‘Enterprise-grade’ at a startup price, this is why we extend our product to small and medium-sized companies, startups, and non-profit organizations with N|Solid SaaS.

Useful Links / References

You can upgrade to NodeJS v18 using the official download link

New Node.js features bring a global fetch API & test runner. Check out the Node version 16-18 report

Welcome Node.js 18 by RedHat
Announcing a new –experimental-modules