How to use the azure-kusto-data.KustoConnectionStringBuilder function in azure-kusto-data

const KustoClient = require("azure-kusto-data").Client;
const KustoConnectionStringBuilder = require("azure-kusto-data").KustoConnectionStringBuilder;
const ClientRequestProperties = require("azure-kusto-data").ClientRequestProperties;

let clusterName = "";
let username = "username";
let password = "password";

const kcs = KustoConnectionStringBuilder.withAadUserPasswordAuthentication(`https://${clusterName}.kusto.windows.net`, username, password);
const kustoClient = new KustoClient(kcs);

kustoClient.execute("db", "TableName | limit 1", (err, results) => {
    if (err) throw new Error(err);
    console.log(JSON.stringify(results));
    console.log(results.primaryResults[0].toString());
});

// providing ClientRequestProperties

const IngestClient = require("azure-kusto-ingest").IngestClient;
const IngestStatusQueues = require("azure-kusto-ingest").IngestStatusQueues;
const IngestionProps = require("azure-kusto-ingest").IngestionProperties;
const { ReportLevel, ReportMethod } = require("azure-kusto-ingest").IngestionPropertiesEnums;
const KustoConnectionStringBuilder = require("azure-kusto-data").KustoConnectionStringBuilder;
const { DataFormat, JsonColumnMapping , IngestionMappingType} = require("azure-kusto-ingest").IngestionPropertiesEnums;
const { BlobDescriptor } = require("azure-kusto-ingest").IngestionDescriptors;

const clusterName = null;
const appId = null;
const appKey = null;
const authorityId = null;

const props = new IngestionProps({
    database: "Database",
    table: "Table",
    format: DataFormat.JSON,
    ingestionMapping : [
        new JsonColumnMapping("TargetColumn1", "$.sourceProp1"),
        new JsonColumnMapping("TargetColumn2", "$.sourceProp2"),
        new JsonColumnMapping("TargetColumn3", "$.sourceProp3")