Posts tagged #javascript

Oxlint now runs ESLint plugins and your own custom rules, so the last excuse for a slow lint step is gone. Here's how JS plugins work and where the gaps are.

One slow resolver can hold a whole GraphQL response hostage. Here's how @defer and @stream split a query into an initial payload and patches, and what to check.

The back/forward cache restores pages from memory instantly, but an unload listener or no-store header can opt you out. Here's how to find and fix the blockers.

JSON.parse can now hand your reviver the original source text of numbers, and JSON.rawJSON writes it back exactly. Here's how to round-trip big IDs.

React 19.3 made Fragment refs stable. Here's how FragmentInstance lets you listen, observe, and move focus across a group of elements without a wrapper div.

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 works during SSR.

npm, pnpm, Yarn, and Bun can all refuse package versions that are only hours old. Here's how each release-age gate works, why units differ, and where CI bites.

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 route caching keeps them fast.