Posts tagged #javascript

One flaky widget shouldn't blank your whole app. Here's how Svelte's boundary element walls off failures, shows loading UI for await, and now works during server rendering too.

npm, pnpm, Yarn, and Bun can all refuse package versions that are only hours old. Here's how each one's release-age gate works, why the units don't match, and where it bites in CI.

Map and WeakMap now have getOrInsert and getOrInsertComputed, two methods that replace the check-then-set boilerplate every JavaScript codebase is full of.

Astro's live content collections fetch CMS and API data at request time with the same typed API as build-time collections, and Astro 7's route caching keeps them fast.

JavaScript can finally turn bytes into base64 and hex (and back) without the String.fromCharCode and btoa dance. Here's how Uint8Array's new encoding methods work and where they replace the helpers you've been copy-pasting.

ES2026's import defer evaluates a module the first time you touch its namespace, not at startup, so you can move heavy work off the cold path without turning half your call stack async.

Almost every laptop shipped in the last two years has a neural processing unit sitting idle. WebNN is the only web standard that can actually talk to it…

Snippets let you define reusable chunks of markup inline and render them like functions. They replace slots, kill the let: directive, and mean you stop…

Svelte 5.36 lets you use await at the top level of a component, inside $derived, and in your markup.