How to use

cache

function

in

Array

Promise.all(
    matchNames.map(async (tableName) => {
      const tableRecords = await exports.query(`SELECT * FROM ${tableName}`);
      if (tableRecords.length > 0 && !tableRecords[0].guild_id) return;
      if (!exports.cache[tableName]) {
        exports.cache[tableName] = {};
        exports.cache[tableName]._primaryKey = await exports.fetchPrimaryKey(tableName);
      }
      const primaryColumn = exports.cache[tableName]._primaryKey;
      for (let i = 0; i < tableRecords.length; i++) {
        const record = tableRecords[i];
        const guildId = record.guild_id;
        if (!exports.cache[tableName][guildId]) exports.cache[tableName][guildId] = {};
        exports.cache[tableName][guildId][record[primaryColumn]] = Util.cloneObj(record, true);
      }
    }),
  )