fix: exportFilename generates PDF outside dist folder and creates incorrect download links (#2313)

Author: RobertoBochet

packages/slidev/node/commands/build.ts

@@ -138,10 +138,11 @@ export async function build(
       }),
     )
     server.listen(port)
+    const filename = options.data.config.exportFilename || 'slidev-exported'
     await exportSlides({
       port,
       base: config.base,
-      ...getExportOptions(args, options, join(outDir, 'slidev-exported.pdf')),
+      ...getExportOptions(args, options, join(outDir, `${filename}.pdf`)),
     })
     server.close()
   }

packages/slidev/node/commands/export.ts

@@ -587,7 +587,7 @@ export function getExportOptions(args: ExportArgs, options: ResolvedSlidevOption
     scale,
     omitBackground,
   } = config
-  outFilename = output || options.data.config.exportFilename || outFilename || `${path.basename(entry, '.md')}-export`
+  outFilename = output || outFilename || options.data.config.exportFilename || `${path.basename(entry, '.md')}-export`
   return {
     output: outFilename,
     slides: options.data.slides,