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JavaScript Weekly Problem 727: March 14, 2025


A Perplexing JavaScript Parsing Puzzle — It seems deceptively easy – simply 14 characters of JavaScript – however after working with JavaScript for 29 years, I obtained it improper. A clue: it goes again to a browser-related quirk from 30 years in the past..

Hillel Wayne

TypeScript’s Compiler to Get 10x Quicker — TypeScript has shaken up the JavaScript ecosystem lately with an rising variety of builders counting on its robust typing and added construction. TypeScript’s compiler isn’t significantly quick, although, however the TypeScript workforce at Microsoft are altering that by porting it to Go!

Anders Hejlsberg (Microsoft)

💡 Dr. Axel Rauschmayer takes a better take a look at the main points behind the port.

Construct a Safe Challenge Administration — Study a security-first method to constructing net functions by constructing a safe venture administration platform with Subsequent.js.

Clerk

IN BRIEF:

  • Node.js v20.19.0 (LTS) is a notable launch for a upkeep department of Node as an exception has been made to the upkeep coverage for backporting require(esm) help, which is now enabled by default.

  • The most recent model of Chrome (and preview variations of Firefox and Safari) help two new HTML attributes, command and commandfor, for including declarative actions to HTML buttons with out instantly requiring JavaScript.

RELEASES:

📒 Articles & Tutorials

Constructing APIs with Subsequent.js — An in depth, official introduction to the ideas behind utilizing Subsequent.js’ App Router and route handlers to construct public APIs you possibly can expose to net, cell, and third-party shoppers.

Lee Robinson

🔎 Node Modules Inspector — A instrument that runs pnpm inside your browser, “installs” a package deal, then analyzes its dependencies. This may be helpful for analyzing packages you already use, but additionally for simplifying your individual initiatives, as 11ty’s Zach Leatherman did right here.

Anthony Fu

PGlite: Run Postgres in WebAssembly — PGlite packages a WASM construct of Postgres right into a TypeScript library that may be run instantly from Node.js (or Bun, Deno, and even the browser) and it’s only some megabytes in dimension.

ElectricSQL / Neon

  • Gleam 1.9 – Kind-safe practical programming language that targets each the Erlang VM and JavaScript runtime.

  • <css-doodle> 0.42 – Internet part for drawing patterns with CSS.

  • Faker 9.6 – Generate fabricated information to your coronary heart’s content material.

  • Selections 11.1 – Configurable choose field/textual content enter plugin.

  • 🕒 Spacetime 7.8 – Light-weight timezone library.

  • Ink 5.2 – Use React to construct CLI apps.

A fast roundup of a few of different fascinating updates or helpful assets within the broader developer panorama:

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