fix: throw error 예외처리

유저가 throw Error를 입력하면 모듈 밖에서도 throw하는 문제가 있었음

이 때문에 내부에서 throw를 한번 걸러줄 수 있게 코드를 수정

추가적으로  에러 코드를 출력하도록 변경함

frontend/src/modules/evaluator/EvalTaskManager.ts

@@ -45,9 +45,10 @@ export default class EvalTaskManager {
       this.deployTask();
     }
   }
-  receiveTaskEnd({ result }: EvalResult, evaluator: Evaluator) {
+  receiveTaskEnd({ result, error }: EvalResult, evaluator: Evaluator) {
     this.taskEndNotifier.notify({
       result,
+      error,
       task: evaluator.currentTask,
     });
 

frontend/src/modules/evaluator/quickjs.ts

@@ -31,18 +31,36 @@ const evalCode = (vm: QuickJSContext, code: string, params: string) => {
   const startTime = performance.now();
   const result = vm.unwrapResult(vm.evalCode(script));
   const endTime = performance.now();
-  const value = vm.dump(result);
+  const { error, value } = vm.dump(result);
   result.dispose();
 
   return {
     time: endTime - startTime,
     result: value,
+    error,
   };
 };
 
 const toRunableScript = (code: string, params: string) => {
   return `
     ${code}\n
-    solution(${params});
+
+    (()=>{
+      try {
+        const result = solution(${params});
+        return {
+          value: result,
+          error: undefined
+        }
+      } catch(err) {
+        return {
+          error: { 
+            name: err.name, 
+            message: err.message,
+            stack: err.stack
+          }
+        }
+      }
+    })()
   `;
 };

frontend/src/modules/evaluator/types.ts

@@ -6,6 +6,11 @@ export type EvalMessage = {
 };
 
 export type EvalResult = {
+  error?: {
+    name: string;
+    message: string;
+    stack: string;
+  };
   result: unknown;
 };
 

frontend/src/pages/ContestPage.tsx

@@ -44,20 +44,21 @@ export default function ContestPage() {
   };
 
   useEffect(() => {
-    return evaluator.subscribe(({ result, task }) => {
+    return evaluator.subscribe(({ result, error, task }) => {
       if (!task) return;
 
       const taskId = task.clientId;
 
-      const evaluatedTestcase = testCases.find((_, index) => index === taskId);
-      if (evaluatedTestcase) {
-        evaluatedTestcase.result = String(result);
-      }
-
       setTestCases((oldTestCases) => {
         return oldTestCases.map((tc, index) => {
           if (index !== taskId) return tc;
 
+          if (error) {
+            return {
+              ...tc,
+              result: `${error.name}: ${error.message} \n${error.stack}`,
+            };
+          }
           return {
             ...tc,
             result,