ui: 支持自定义导出文件名

packages/hydrooj/src/model/problem.ts

@@ -204,7 +204,7 @@ export class ProblemModel {
         for (const pdoc of pdocs) {
             try {
                 // eslint-disable-next-line no-await-in-loop
-                pdoc.config = await parseConfig(pdoc.config);
+                pdoc.config = await parseConfig(pdoc.config as string);
             } catch (e) {
                 pdoc.config = `Cannot parse: ${e.message}`;
             }