Fix: Dynamic route split regex ()%22,%22shortMessageMarkdownLink%22:null,%22bodyMessageHtml%22:%22* updates route dynamic split regex * changeset * Update .changeset/lemon-tires-yell.md --------- Co-authored-by: Florian Lefebvre <contact@florian-lefebvre.dev> Co-authored-by: Emanuele Stoppa <my.burning@gmail.com>

JusticeMatthew · florian-lefebvre · ematipico · web-flow · commit 218e07054f4f · 2025-09-05T20:00:54.000+02:00
diff --git a/.changeset/lemon-tires-yell.md b/.changeset/lemon-tires-yell.md
@@ -0,0 +1,5 @@
+---
+'astro': patch
+---
+
+Updates dynamic route split regex to avoid infinite retries/exponential complexity
diff --git a/packages/astro/src/core/routing/manifest/create.ts b/packages/astro/src/core/routing/manifest/create.ts
@@ -41,9 +41,7 @@ interface Item {
 	routeSuffix: string;
 }
 
-// Disable eslint as we're not sure how to improve this regex yet
-// eslint-disable-next-line regexp/no-super-linear-backtracking
-const ROUTE_DYNAMIC_SPLIT = /\[(.+?\(.+?\)|.+?)\]/;
+const ROUTE_DYNAMIC_SPLIT = /\[([^[\]()]+(?:\([^)]+\))?)\]/;
 const ROUTE_SPREAD = /^\.{3}.+$/;
 
 function getParts(part: string, file: string) {

-Original file line number
+Diff line change
@@ @@ -0,0 +1,5 @@ @@
 +---
 +'astro': patch
 +---
++
 +Updates dynamic route split regex to avoid infinite retries/exponential complexity
Original file line number	Diff line number	Diff line change
`@@ -41,9 +41,7 @@ interface Item {`
`41`	`41`	`routeSuffix: string;`
`42`	`42`	`}`
`43`	`43`
`44`		`-// Disable eslint as we're not sure how to improve this regex yet`
`45`		`-// eslint-disable-next-line regexp/no-super-linear-backtracking`
`46`		`-const ROUTE_DYNAMIC_SPLIT = /\[(.+?\(.+?\)\|.+?)\]/;`
	`44`	`+const ROUTE_DYNAMIC_SPLIT = /\[([^[\]()]+(?:\([^)]+\))?)\]/;`
`47`	`45`	`const ROUTE_SPREAD = /^\.{3}.+$/;`
`48`	`46`
`49`	`47`	`function getParts(part: string, file: string) {`