JS: ERROR: "Promise { <pending> }" with Sockets - node.js

Question

I'm having a problem with a Promise, when I try to retrieve the data it says Promise { <pending> } I already looked for some information about that but I cannot understand how to end it.
If anyone can help me I would be appreciated.
Thanks in advance
/bucket.js
'use strict'
const connection = require('../server/models'),
oracledb = require('oracledb'),
conexion = oracledb.getConnection(connection)
oracledb.outFormat = oracledb.OBJECT
module.exports = (data) => {
console.log("RES: ", filter(data));
return filter(data)
}
const filter = (value) => {
return conexion
.then(con => {
return con.execute(
`SELECT id_application, name, description, creation_date ` +
`FROM application `
).then(bucket => {
return con.execute(
`SELECT id_definition, id_application, field_name_original,
field_name_new, column_name, position, id_type_data,
field_size, creation_date, description, filter, visible ` +
`FROM definition ` +
`WHERE id_application in (${getApp(value.data)}) ` +
`AND ${value['search']} = '${value['value']}' `
).then(definitions => { return creaJSON(bucket, definitions) } )
.catch(error => { return {"error": error} })
})
.catch(error => { return {"error": error} })
})
.catch(error => { return {"error": error} })
}
const getApp = (value) => {
return value.map(obj => {
return `'${obj.ID_APPLICATION}'`
})
}
const creaJSON = (buckets, definitions) => {
var df = new Array()
buckets['rows'].map(obj => {
definitions['rows'].map(def => {
if(obj['ID_APPLICATION'] == def['ID_APPLICATION']) df.push(def)
})
obj['Definitions'] = df
df = []
})
return buckets.rows
}
UPDATED
My error wasnt only in the code above. I'm using sockets and also with the Bergi answer I couldn't had my response in the client. I had the next code:
socket.on('bucketVisibleT', (data) => {
buckets = {data:data,search:'VISIBLE',value:'T'}
io.sockets.emit('bucketVisibleFs', require('./bucket')(buckets))
})
so I had to change with the next one, and now I have my response in my client.
socket.on('bucketVisibleT', (data) => {
buckets = {data:data,search:'VISIBLE',value:'T'}
require('./bucket')(buckets).then(res => {
io.sockets.emit('bucketVisibleTs', res)
})
})
I apologise because I didn't give a good explanation of my problem but I thought it was in my first code

Answer 1

filter returns a promise, so like with the other promise-returning functions you need to chain a then call to it if you want to do something with the result:
module.exports = (data) =>
filter(data).then(res => {
console.log("RES: ", res);
return res;
});