judge: fix support for node12

packages/hydrojudge/package.json

@@ -1,7 +1,7 @@
 {
     "name": "@hydrooj/hydrojudge",
     "bin": "bin/hydrojudge.js",
-    "version": "2.13.6",
+    "version": "2.13.7",
     "main": "package.json",
     "author": "undefined <i@undefined.moe>",
     "repository": "https://github.com/hydro-dev/Hydro.git",

packages/hydrojudge/src/hosts/hydro.ts

@@ -206,7 +206,7 @@ export default class Hydro {
             if (etags[file.name] !== file.etag + file.lastModified) filenames.push(file.name);
         }
         for (const name in etags) {
-            if (!allFiles.has(name) && fs.existsSync(path.join(filePath, name))) await fs.rm(path.join(filePath, name));
+            if (!allFiles.has(name) && fs.existsSync(path.join(filePath, name))) await fs.remove(path.join(filePath, name));
         }
         if (filenames.length) {
             log.info(`Getting problem data: ${this.config.host}/${source}`);

packages/hydrojudge/src/service.ts

@@ -92,7 +92,7 @@ async function postInit() {
             }
         }
         for (const name in etags) {
-            if (!filenames.has(name)) await fs.rm(path.join(filePath, name));
+            if (!filenames.has(name) && fs.existsSync(path.join(filePath, name))) await fs.remove(path.join(filePath, name));
         }
         fs.writeFileSync(path.join(filePath, 'etags'), JSON.stringify(version));
         fs.writeFileSync(path.join(filePath, 'lastUsage'), new Date().getTime().toString());