bug fixes

Co-authored-by: Avad3 <Avad3@users.noreply.github.com>

src/shared/rewriters/css.ts

@@ -0,0 +1,35 @@
+// This CSS rewriter uses code from Meteor
+// You can find the original source code at https://github.com/MeteorProxy/Meteor
+
+import { encodeUrl } from "./url";
+
+export function rewriteCss(css: string, origin?: URL) {
+    const regex =
+    /(@import\s+(?!url\())?\s*url\(\s*(['"]?)([^'")]+)\2\s*\)|@import\s+(['"])([^'"]+)\4/g
+
+    return css.replace(
+        regex,
+        (
+            match,
+            importStatement,
+            urlQuote,
+            urlContent,
+            importQuote,
+            importContent
+        ) => {
+            const url = urlContent || importContent
+            const encodedUrl = encodeUrl(url.trim(), origin)
+
+            if (importStatement) {
+                return `@import url(${urlQuote}${encodedUrl}${urlQuote})`
+            }
+
+            if (importQuote) {
+                return `@import ${importQuote}${encodedUrl}${importQuote}`
+            }
+
+            return `url(${urlQuote}${encodedUrl}${urlQuote})`
+        }
+    )
+
+}