Node doesn't print values and does not finish - node.js

Question

I'm trying to retrieve data from MondoDB and print result to console.
The data are not visualized and the script does not return.
where is the problem?
Thanks.
import * as mongoProxy from "mongodb";
import { exists } from "fs";
namespace code {
interface ICountry{
TestIField1: string;
TestIField266A3: string;
}
interface IProjection{
projection: {"TestIField1": number, "TestIField2": number}
};
interface IFilter {
filter: {
"this_is_valid": {$ne: boolean}
}
};
class CreateMembers {
private mongo_username = "mongo_credentials";
private mongo_password = "mongo_credentials";
private mongo_db = "DB_NAME";
private mongo_host ="mongo_host:27017";
private mongo_replica_set = "mongodev";
private mongo_url = `mongodb://${this.mongo_username}:${this.mongo_password}#${this.mongo_host}/${this.mongo_db}?replicaSet=${this.mongo_replica_set}`;
private env = "development";
private async getDataFromDb(collectionName: string, filter: IFilter, projection:IProjection) {
console.log("Connecting...");
const dbConn = await mongoProxy.connect(this.mongo_url);
const db = dbConn.db(this.mongo_db);
if (dbConn.isConnected()) {
console.log("Connected!");
const mongoResult=db.collection(collectionName).find<ICountry>(
{"this_is_valid":{ $ne: true }},
{projection: {"TestIField1": 1, "TestIField2": 1}}
);
mongoResult.map((r)=>{
console.log(`DEBUG-->: ${r}`);
});
console.log("Data retrieved... returning to run.");
return mongoResult;
}
else{console.log("CONNECTON FAILED!");
}
}
public async run(){
console.log("RUN1");
const projection : IProjection = {projection: {"TestIField1": 1, "TestIField2": 1}};
const filter : IFilter = {filter: {"this_is_valid": {$ne: true}}};
const collectionName="country";
// const filter={"this_is_valid":{ $ne: true }};
// const projection={projection: {"TestIField1": 1, "TestIField2": 1}};
let countryRecords=await this.getDataFromDb(collectionName, filter, projection);
console.log("RUN2");
if (countryRecords){
countryRecords.forEach((r)=>{
console.log(`DEBUG-->: ${r}`);
});
}
console.log("RUN3");
}
}
let myClass=new CreateMembers();
myClass.run();
}
The output on console:
RUN1
Connecting...
Connected!
Data retrieved... returning to run.
RUN2
RUN3
//here the script is still running; no return to the console.

Answer 1

.find return a promise so you should wait for it:
const mongoResult = await db.collection(collectionName).find<ICountry>(
{ "this_is_valid": { $ne: true } },
{ projection: { "TestIField1": 1, "TestIField2": 1 } }
).toArray();
And the script is still running because you need to close the mongo connection with:
dbConn.close()