diff --git a/.changeset/tame-dolls-serve.md b/.changeset/tame-dolls-serve.md
new file mode 100644
index 000000000000..99271a4ea9d5
--- /dev/null
+++ b/.changeset/tame-dolls-serve.md
@@ -0,0 +1,5 @@
+---
+"@biomejs/biome": patch
+---
+
+Fixed an issue where Svelte globals ($state and so on) were not properly recognized inside `.svelte.test.ts/js` and `.svelte.spec.ts/js` files.
diff --git a/crates/biome_service/src/file_handlers/javascript.rs b/crates/biome_service/src/file_handlers/javascript.rs
index 12c29dec44a2..fd4a4df953a3 100644
--- a/crates/biome_service/src/file_handlers/javascript.rs
+++ b/crates/biome_service/src/file_handlers/javascript.rs
@@ -325,6 +325,10 @@ impl ServiceLanguage for JsLanguage {
             } else if filename.ends_with(".svelte")
                 || filename.ends_with(".svelte.js")
                 || filename.ends_with(".svelte.ts")
+                || filename.ends_with(".svelte.test.ts")
+                || filename.ends_with(".svelte.test.js")
+                || filename.ends_with(".svelte.spec.ts")
+                || filename.ends_with(".svelte.spec.js")
             {
                 // Svelte 5 runes
                 globals.extend(