SyntaxError: Identifier 'createToken' has already been declared - node.js

Question

Hi I'm making a login server there is an error There's an error when I make a declaration. const createToken what can I do How can I change that code? What's the problem and how to solve and why? can you explain me thank you very much
isRefresh.js
const jwt = require("jsonwebtoken");
const { createToken } = require("../utils/jwt");
const db = require("../database/db");
const createToken = (payload) => {
console.log("createToken");
const token = jwt.sign({ username: payload.toString() }, secretKey, {
algorithm: "sha256",
expiresIn: "30m",
});
return token;
};
module.exports = async (req, res, next) => {
try {
const refreshtoken = req.get("r_x_auth");
if (!refreshtoken) {
return false;
}
const decodedToken = jwt.verify(refreshtoken, R_secretKey);
const data = [decodedToken.username];
const sql = "select * from member where user_id = ?";
const conn = await db.getConnection();
const [rows] = await conn.query(sql, data);
if (rows) {
const newtoken = createToken(rows[0].username);
res.send(newtoken);
} else {
return false;
}
} catch (err) {
next(err);
}
};
jwt.js
const jwt = require("jsonwebtoken");
const { ACCESS_KEY, REFRESH_KEY } = process.env;
const createToken = (payload) => {
const token = jwt.sign({ username: payload.toString() }, ACCESS_KEY, {
algorithm: "sha256",
expiresIn: "30m",
});
return token;
};
const creatRefreshToken = (payload) => {
const retoken = jwt.sign({ username: payload.toString() }, REFRESH_KEY, {
algorithm: "sha256",
expiresIn: "1d",
});
return retoken;
};
module.exports = { createToken, creatRefreshToken };
isAuth.js
const jwt = require("jsonwebtoken");
require("dotenv").config();
const secretKey = process.env.ACCESS_KEY;
const db = require("../database/db");
module.exports = async (req, res, next) => {
try {
const token = req.get("x_auth");
const decodedToken = jwt.verify(token, secretKey);
const { username } = decodedToken;
const data = [username];
const sql = "select * from member where username = ?";
const conn = await db.getConnection();
const [rows] = await conn.query(sql, data);
if (!rows) {
return false;
}
next();
} catch (err) {
next(err);
}
};
controller.js
const jwt = require("jsonwebtoken");
require("dotenv").config();
const secretKey = process.env.ACCESS_KEY;
const db = require("../database/db");
module.exports = async (req, res, next) => {
try {
const token = req.get("x_auth");
const decodedToken = jwt.verify(token, secretKey);
const { username } = decodedToken;
const data = [username];
const sql = "select * from member where username = ?";
const conn = await db.getConnection();
const [rows] = await conn.query(sql, data);
if (!rows) {
return false;
}
next();
} catch (err) {
next(err);
}
};
Anyone please help thanks !
please please help me
I'm clueless save me

Answer 1

Error message is clean as it should be: you defined createToken twice on same module level.
Rename one of them, for example:
const createTokenJWT = require("../utils/jwt").createToken;

Answer 2

You are declaring createToken twice:
const { createToken } = require("../utils/jwt");
and here:
const createToken = (payload) => {
console.log("createToken");
const token = jwt.sign({ username: payload.toString() }, secretKey, {
algorithm: "sha256",
expiresIn: "30m",
});
return token;
};