Prefix-only Node.js core modules; new Array methods; JS runtime for WebAssembly; Types as comments

ES.nextNews: the latest in JavaScript and cross-platform tools
Curated by Dr. Axel Rauschmayer and Johannes Weber.

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The latest in JavaScript and cross-platform tools

Node.js 18 introduces prefix-only core modules [pseudo-protocol node: is mandatory]
fusebit.io @cjihrig, @fusebitio

Node.js has supported the protocol node: for a while. Module specifiers with this prefix always refer to built-in modules, never to modules in node_modules. 'node:test' is the first core module where this protocol is mandatory, with more to follow. The post describes the upsides and downsides of this approach.

ECMAScript proposal “Change Array by copy”: four new non-destructive Array methods
2ality.com @2ality

The blog post describes the ECMAScript proposal “Change Array by copy” by Robin Ricard and Ashley Claymore. It proposes four new methods for Arrays and Typed Arrays:

.toReversed()
.toSorted()
.toSpliced()
.with()

Capture the Flag 101 Workshop: Solve your first CTF hacking challenge
www.vpdae.com

Want to get started with Capture the Flag security competitions? Join Snyk's CTF 101 Workshop to learn how to solve web & pwn CTF challenges. Get live support and learn hacking tactics from CTF experts in the hands-on lab as you solve your first challenge. Register now! Sponsor

Javy: running JavaScript in a runtime on WebAssembly
github.com @saulecabrera, github/maximebedard, github/jeffcharles, @ShopifyEng

[Quoting the repository’s readme file.]

Run your JavaScript on WebAssembly. Javy takes your JavaScript code, and executes it in a WebAssembly embedded JavaScript runtime.

Javy is currently used for the beta Shopify Scripts platform. We intend on supporting and improving this runtime in that context. Eventually this project should be a good general purpose JavaScript runtime but that is not the current goal.

Types as comments with the TypeScript team [83-min. video]
www.youtube.com @drosenwasser, @SeaRyanC, @nicknisi, @b0neskull, @JSPartyFM

JS Party: “There’s a new proposal in ECMAScript town to enable type annotations in JavaScript code by having JS engines ignore them at runtime. This has large implications and we’ve gathered two folks from the TypeScript team (Ryan Cavanaugh, Daniel Rosenwasser) to talk through them with us!”

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Formatter for JS & TS; `ShadowRealm` – a better `eval()`; shim for Import Maps; ESLint rules for async code

Tuesday, April 12, 2022

ES.nextNews: the latest in JavaScript and cross-platform tools Curated by Dr. Axel Rauschmayer and Johannes Weber. ES.next News The latest in JavaScript and cross-platform tools Rome Formatter, a new

TC39 meeting in March; new Node.js features; Locale-aware sorting; built-in test runner for Node.js; supply chain security

Tuesday, April 5, 2022

ES.nextNews: the latest in JavaScript and cross-platform tools Curated by Dr. Axel Rauschmayer and Johannes Weber. ES.next News The latest in JavaScript and cross-platform tools Updates from TC39

Prefix-only Node.js core modules; new Array methods; JS runtime for WebAssembly; Types as comments

The latest in JavaScript and cross-platform tools

Older messages

Formatter for JS & TS; `ShadowRealm` – a better `eval()`; shim for Import Maps; ESLint rules for async code

TC39 meeting in March; new Node.js features; Locale-aware sorting; built-in test runner for Node.js; supply chain security

Searching Arrays backwards; importing JSON; AbortSignal.timeout(); parceljs; MDN Plus

Type annotations; WebGPU; npm package `-`; console-based debugging; name clashes with proposed features

MDN redesign; ShadowRealms; properties of primitives; controling Promise concurrency; detecting malicious npm packages

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