2 Commits (svelte-custom-renderer)

Author	SHA1	Message	Date
github-actions[bot]	636eaaaa6f	Version Packages (#18750) ... This PR was opened by the [Changesets release](https://github.com/changesets/action) GitHub action. When you're ready to do a release, you can merge this and the packages will be published to npm automatically. If you're not ready to do a release yet, that's fine, whenever you add more changesets to main, this PR will be updated. # Releases ## svelte@5.57.1 ### Patch Changes - fix: cancel deferred event listeners during cleanup ([#18749](https://github.com/sveltejs/svelte/pull/18749)) - fix: preserve global CSS in components without scopable elements ([#18793](https://github.com/sveltejs/svelte/pull/18793)) - fix: reduce SSR render result garbage collection ([#18798](https://github.com/sveltejs/svelte/pull/18798)) - fix: resolve the fallback of an each block in the enclosing scope ([#18803](https://github.com/sveltejs/svelte/pull/18803)) - perf: speed up parser interactions with Acorn or avoid them where possible ([#18740](https://github.com/sveltejs/svelte/pull/18740)) - fix: prevent effect tree of batches from interfering with each other ([#18508](https://github.com/sveltejs/svelte/pull/18508)) - fix: serialize input default values during server rendering ([#18733](https://github.com/sveltejs/svelte/pull/18733)) - fix: remove `WAS_MARKED` flag in favor of `Set` ([#18127](https://github.com/sveltejs/svelte/pull/18127)) - fix: throw `set_context_after_init` when `setContext` is called after an `await` during SSR ([#18739](https://github.com/sveltejs/svelte/pull/18739)) - fix: make Object.hasOwn reactive for state proxy ownership changes ([#18838](https://github.com/sveltejs/svelte/pull/18838)) - fix: keep `$state.eager` when used as a variable initializer ([#18809](https://github.com/sveltejs/svelte/pull/18809)) - perf: avoid regex matching in parser where possible ([#18736](https://github.com/sveltejs/svelte/pull/18736)) - fix: in non-async mode, only push variable to current_sources when active_reaction is updating ([#18550](https://github.com/sveltejs/svelte/pull/18550)) - fix: recognise `aria-braillelabel` and `aria-brailleroledescription` as known ARIA attributes ([#18765](https://github.com/sveltejs/svelte/pull/18765)) Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>	1 week ago
Nic Polumeyv	34142af3a1	perf: build identifier and member chain expressions without acorn (#18740) ... After #18738 the biggest thing left in the parser profile was acorn's constructor, `getOptions` and `wordsRegexp` alone were around 12% of parse time. `parseExpressionAt` is `new Parser()` followed by `parseExpression()`, and we call it for every expression in the template. For something like `{name}` the constructor (normalizing options, four keyword regexes, scope state) is about 2 µs while the actual parse is under 1 µs, and components have dozens of these. The fix seemed to belong in acorn, cache the options and regexes so repeated `parseExpressionAt` calls stop redoing them. I lasted about twenty minutes in acorn's constructor... I was way in over my head. The Svelte alternative was one parser per component, reset between expressions, but that means re-initializing acorn's and acorn-typescript's internals by hand and breaking whenever either adds a field. I realized most of the expressions in the test corpus are an identifier or an `a.b.c` chain, and you don't need a JS parser for those. So that's this fix. `read_expression` now scans for that shape, builds the nodes itself in the form acorn would, and hands everything else to acorn like before.No behavior change, verified byte-for-byte against acorn on the test corpus. About 18% faster parsing on typical components on top of #18738. I guess this should be a fix for acorn, rather than here, so I'm not against closing this. --------- Co-authored-by: Simon H <5968653+dummdidumm@users.noreply.github.com> Co-authored-by: Simon Holthausen <simon.holthausen@vercel.com>	4 weeks ago