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chore: speed up regex #11918

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Jun 5, 2024
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chore: speed up regex #11918

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5 changes: 5 additions & 0 deletions .changeset/itchy-peaches-compare.md
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Original file line number Diff line number Diff line change
@@ -0,0 +1,5 @@
---
"svelte": patch
---

chore: speed up regex
4 changes: 2 additions & 2 deletions packages/svelte/src/compiler/preprocess/index.js
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Expand Up @@ -248,9 +248,9 @@ function stringify_tag_attributes(attributes) {
}

const regex_style_tags =
/<!--[^]*?-->|<style((?:\s+[^=>'"/]+=(?:"[^"]*"|'[^']*'|[^>\s]+)|\s+[^=>'"/]+)*\s*)(?:\/>|>([\S\s]*?)<\/style>)/g;
/<!--[^]*?-->|<style((?:\s+[^=>'"/\s]+=(?:"[^"]*"|'[^']*'|[^>\s]+)|\s+[^=>'"/\s]+)*\s*)(?:\/>|>([\S\s]*?)<\/style>)/g;
const regex_script_tags =
/<!--[^]*?-->|<script((?:\s+[^=>'"/]+=(?:"[^"]*"|'[^']*'|[^>\s]+)|\s+[^=>'"/]+)*\s*)(?:\/>|>([\S\s]*?)<\/script>)/g;
/<!--[^]*?-->|<script((?:\s+[^=>'"/\s]+=(?:"[^"]*"|'[^']*'|[^>\s]+)|\s+[^=>'"/\s]+)*\s*)(?:\/>|>([\S\s]*?)<\/script>)/g;

/**
* Calculate the updates required to process all instances of the specified tag.
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