diff --git a/build/build.js b/build/build.js
index 0b2c44b3d..ad263e3d5 100644
--- a/build/build.js
+++ b/build/build.js
@@ -64,10 +64,6 @@ fs.writeFileSync(path.resolve(process.cwd(), 'tsconfig.json'), JSON.stringify(co
 if (argv.watch) {
     child.execSync('./node_modules/.bin/tsc -b --watch', { stdio: 'inherit' });
 } else {
-    let result;
-    try {
-        result = child.execSync('./node_modules/.bin/tsc -b', { stdio: 'inherit' });
-    } catch (e) {
-        result = child.execSync('./node_modules/.bin/tsc -b', { stdio: 'inherit' });
-    }
+    child.execSync('cd packages/hydrooj && yarn build', { stdio: 'inherit' });
+    child.execSync('./node_modules/.bin/tsc -b', { stdio: 'inherit' });
 }
\ No newline at end of file
diff --git a/package.json b/package.json
index dcb946c74..994263c84 100644
--- a/package.json
+++ b/package.json
@@ -12,7 +12,7 @@
         "jest": "node build/jest",
         "debug": "node --async-stack-traces --trace-deprecation --enable-source-maps build/start --debug",
         "start": "node build/start",
-        "clean": "zsh -c \"rm -r tsconfig.build.tsbuildinfo ./packages/*/tsconfig.tsbuildinfo ./packages/*/dist ./.coverage\""
+        "clean": "zsh -c \"rm -rf tsconfig.build.tsbuildinfo ./packages/*/tsconfig.tsbuildinfo ./packages/*/dist ./.coverage\""
     },
     "version": "1.0.0",
     "license": "AGPL-3.0-only",
@@ -41,4 +41,4 @@
         "fs-extra": "^9.0.1",
         "yargs": "^16.0.3"
     }
-}
+}
\ No newline at end of file
diff --git a/packages/hydrooj/src/interface.ts b/packages/hydrooj/src/interface.ts
index 002a36ef8..c42c8271c 100644
--- a/packages/hydrooj/src/interface.ts
+++ b/packages/hydrooj/src/interface.ts
@@ -76,8 +76,8 @@ export interface User extends Dictionary<any> {
     role: string,
     regip: () => string,
     loginip: () => string,
-    hasPerm: (perm: bigint) => boolean,
-    hasPriv: (priv: number) => boolean,
+    hasPerm: (...perm: bigint[]) => boolean,
+    hasPriv: (...priv: number[]) => boolean,
     checkPassword: (password: string) => void,
 }