@next/font/google: Hash filenames used in virtual file paths (vercel/…

…turbo#2978)

* Implement `DeterministicHash` for `&str`

* @next/font/google: Hash filenames used in virtual file paths

* Apply suggestions from code review

Co-authored-by: Leah <github.leah@hrmny.sh>

Co-authored-by: Leah <github.leah@hrmny.sh>

packages/next-swc/crates/next-core/src/next_font_google/mod.rs

@@ -5,6 +5,7 @@ use once_cell::sync::Lazy;
 use turbo_tasks::primitives::{OptionStringVc, OptionU16Vc, StringVc};
 use turbo_tasks_fetch::fetch;
 use turbo_tasks_fs::{FileContent, FileSystemPathVc};
+use turbo_tasks_hash::hash_xxh3_hash64;
 use turbopack_core::{
     issue::IssueSeverity,
     resolve::{
@@ -72,9 +73,10 @@ impl ImportMappingReplacement for NextFontGoogleReplacer {
         let query = &*query_vc.await?;
         let options = font_options_from_query_map(*query_vc);
         let properties = get_font_css_properties(options).await?;
+        let request_id = get_request_id(*query_vc).await?.await?;
         let js_asset = VirtualAssetVc::new(
                 attached_next_js_package_path(self.project_path)
-                    .join("internal/font/google/inter.js"),
+                    .join(&format!("internal/font/google/{}.js", request_id)),
                 FileContent::Content(
                     formatdoc!(
                         r#"
@@ -137,15 +139,17 @@ impl ImportMappingReplacement for NextFontGoogleCssModuleReplacer {
         let Request::Module {
             module: _,
             path: _,
-            query,
+            query: query_vc,
         } = request else {
             return Ok(ImportMapResult::NoEntry.into());
         };
+        request.request();
 
-        let options = font_options_from_query_map(*query);
+        let options = font_options_from_query_map(*query_vc);
         let stylesheet_url = get_stylesheet_url_from_options(options);
+        let request_id = get_request_id(*query_vc).await?.await?;
         let css_virtual_path = attached_next_js_package_path(self.project_path)
-            .join("internal/font/google/cssmodule.module.css");
+            .join(&format!("internal/font/google/{}.module.css", request_id));
 
         let stylesheet_res = fetch(
             stylesheet_url,
@@ -212,6 +216,23 @@ impl ImportMappingReplacement for NextFontGoogleCssModuleReplacer {
     }
 }
 
+async fn get_request_id(query_vc: QueryMapVc) -> Result<StringVc> {
+    let query = &*query_vc.await?;
+    let query = query.as_ref().context("Query map must be present")?;
+    let mut to_hash = vec![];
+    for (k, v) in query {
+        to_hash.push(k);
+        to_hash.push(v);
+    }
+
+    let options = font_options_from_query_map(query_vc).await?;
+    Ok(StringVc::cell(format!(
+        "{}_{:x?}",
+        options.font_family.to_lowercase().replace(' ', "_"),
+        hash_xxh3_hash64(to_hash)
+    )))
+}
+
 #[turbo_tasks::function]
 async fn get_stylesheet_url_from_options(options: NextFontGoogleOptionsVc) -> Result<StringVc> {
     let options = options.await?;