bot-discord-coins/fonctions/getPrefix.js

const db = require("./database.js");

module.exports = async function getPrefix(serverId) {
  const prefix = await new Promise((resolve, reject) => {
    db.get(
      `SELECT * FROM config WHERE guildId = ? AND name = ?`,
      [serverId, "prefix"],
      (err, row) => {
        if (err) reject(err);
        resolve(row);
      },
    );
  });

  return prefix ? prefix.value : "&";
};