libJudge is a lightweight code execution engine built with Node.js and the `child_process` module. It enables you to execute user-submitted code in a controlled environment for educational, testing, or evaluation purposes.
Note: While it isolates processes, it does not run inside a secure container (like Docker). For production-grade isolation, containerization is recommended.
| Parameter | Type | Required |
|---|---|---|
| language | string | ✓ |
| code | string | ✓ |
| input | string | - |
| timeout | number (ms) | - |
{
"message": "All workers completed",
"jobId": "hill",
"results": [
{
"input": "5 1 2 3 4 5",
"expected_output": "15",
"result": "15",
"correct": true,
"timeout": "2"
}
]
}import fs from 'fs';
import path from 'path';
import { judge } from 'lib-judge';
// C++ code for summing array elements
const code = `
#include<iostream>
#include<vector>
using namespace std;
int main(){
int n;
cin>>n;
vector<int> v(n);
for(int i = 0;i<n;i++){
cin>>v[i];
}
int c = 0;
for(auto it:v){
c+=it;
}
cout<<c;
return 0;
}`;
// Save to a temporary file
const tmpDir = './tmp';
if (!fs.existsSync(tmpDir)) fs.mkdirSync(tmpDir);
const tmpPath = path.join(tmpDir, `code_${Date.now()}.cpp`);
fs.writeFileSync(tmpPath, code, 'utf-8');
// Execute with judge
const result = await judge({
codePath: tmpPath, // path of the file
ques_name: 'sum of array',
input: '5 1 2 3 4 5 ### 3 1 2 3 ### 2 1 2',
output: '15 ### 6 ### 3',
timeout: '2',
sizeout: '64',
});
console.log(result);curl -X POST http://<your-api-endpoint>/run \ -F "file=./code.cpp" \ -F "ques_name= sum of number" \ -F "timeout=2" \ -F "sizeout=1" \ -F "input=5 1 2 3 4 5 ### 3 1 2 3 ### 2 1 4..." // each input are seperated by ### \ -F "output=15 ### 6 ### 5 .." // each output are seperated by ### \ -F "language=cpp" '