chore: reduce diff for Sourcemap::toUrl/Sourcemap::toString

Author: sapphi-red

packages/vite/src/node/plugins/importAnalysisBuild.ts

@@ -711,8 +711,7 @@ export function buildImportAnalysisPlugin(config: ResolvedConfig): [Plugin] {
                 nextMap as RawSourceMap,
                 chunk.map as RawSourceMap,
               ]) as SourceMap
-              // TODO: rolldown's sourcemap type does not have toUrl function
-              // map.toUrl = () => genSourceMapUrl(map)
+              map.toUrl = () => genSourceMapUrl(map)
               chunk.map = map
 
               if (buildSourcemap === 'inline') {

packages/vite/src/node/plugins/worker.ts

@@ -166,8 +166,7 @@ function emitSourcemapForWorkerEntry(
       config.build.sourcemap === 'hidden' ||
       config.build.sourcemap === true
     ) {
-      // TODO: rolldown does not support sourcemap.toString()
-      const data = JSON.stringify(sourcemap)
+      const data = sourcemap.toString()
       const mapFileName = chunk.fileName + '.map'
       saveEmitWorkerAsset(config, {
         fileName: mapFileName,