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JavaScript Weekly Subject 639: Might 18, 2023

Bun’s New Bundler: 220x Quicker than webpack?Bun is likely one of the latest JavaScript runtimes (constructed atop the JavaScriptCore engine) and focuses on pace whereas aiming to be a drop-in alternative for Node.js. This week’s v0.6.0 launch is the ‘greatest launch but’ with standalone executable era and extra, however its new JavaScript bundler and minifier could entice many of the consideration and this put up digs into why.

Jarred Sumner

🤔 In the event you’d choose to learn what a 3rd celebration thinks, Shane O’Sullivan gave the brand new bundler a spin and shared his ideas. There’s additionally some dialogue on Hacker Information. It is early days and whereas esbuild could also be quick sufficient for many proper now, it is implausible to see any progress in bundling.

Deopt Explorer: A VS Code Extension to Examine V8 Hint Log Information — A radical introduction to MS’s new device for performing evaluation of the V8 engine’s internals, together with CPU profile information, how inline caches function, deoptimizations, how features had been run (interpreted or compiled) and extra. There’s a lot going on.

Ron Buckton (Microsoft)

Supercharge Your Web sites and Functions with Cloudflare — Prepare for supercharged pace and reliability with Cloudflare’s suite of efficiency instruments. With ultra-fast CDN, good site visitors routing, media optimization, and extra, Cloudflare has every thing you must guarantee your web site or app runs at peak efficiency.


jQuery 3.7.0 Launched — JavaScript Weekly is 638 points previous, or nearly 13 years as soon as you are taking away weeks off, so jQuery was a massive deal in our early days. We maintain a whole lot of nostalgia for it, and it stays extensively used even when no-one is writing about it anymore 😆 v3.7 folds the Sizzle selector engine into the core, provides some unitless CSS properties, positive factors a brand new uniqueSort technique, and “main adjustments” are nonetheless promised in future. jQuery lives on!

Timmy Willison (jQuery Basis)



📒 Articles & Tutorials

TypeScript’s personal JS Tasks Using TypeScript web page has extra information on the completely different ranges of strictness you possibly can comply with from mere inference on common JS code by means of to full on TypeScript with strict enabled.

Your Jest Exams May Be Unsuitable — Is your Jest check suite failing you? You won’t be utilizing the testing framework’s full potential, particularly in the case of stopping state leakage between exams.

Jamie Magee

A Information to Visible Regression Testing with Playwright — The Playwright browser management library can type the idea of an end-to-end testing mechanism all written in JavaScript, and evaluating the visible output of exams can assist present the place issues are going flawed.

Dima Ivashchuk (Misplaced Pixel)

..and if React is your factor, the newest problem of React Standing is for you.

Starry Evening: GitHub-Like Syntax Highlighting — Apparently, GitHub’s personal syntax highlighting method isn’t open supply, however this takes an identical method and is. It’s admittedly fairly ‘heavy’ (as a consequence of utilizing a WASM construct of the Oniguruma regex engine) however that’s the value of high quality.

Titus Wormer

headless-qr: A Easy, Fashionable QR Code Library — A slimmer adaptation of an older venture with out the additional code that isn’t vital at present. Turning the binary into a picture is your job, or use one thing like QRCode.js if you would like a canvas-rendered QR code out of the field.

Wealthy Harris

Discover JavaScript Jobs with Employed — Employed makes job searching easy-instead of chasing recruiters, firms method you with wage particulars up entrance. Create a free profile now.


🧑‍💻 Bought a job itemizing to share? This is how.

js2flowchart.js — A visualization library to transform JavaScript code into enticing SVG flowcharts. Fortunately, there’s a stay on-line model if you wish to play with out having to put in something.

Bohdan Liashenko



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