Add .css.cjs to the Vanilla Extract file filter (#1031)

Author: mrm007

.changeset/big-grapes-juggle.md

@@ -0,0 +1,5 @@
+---
+'@vanilla-extract/integration': patch
+---
+
+Add `.css.cjs` extension to the Vanilla Extract file filter

packages/integration/src/filters.ts

@@ -1,4 +1,4 @@
 // Vite adds a "?used" to CSS files it detects, this isn't relevant for
 // .css.ts files but it's added anyway so we need to allow for it in the file match
-export const cssFileFilter = /\.css\.(js|mjs|jsx|ts|tsx)(\?used)?$/;
+export const cssFileFilter = /\.css\.(js|cjs|mjs|jsx|ts|tsx)(\?used)?$/;
 export const virtualCssFileFilter = /\.vanilla\.css\?source=.*$/;