Empty ELBs Deno script

empty_elbs.ts

import { dim, red, bold, italic, underline } from "https://deno.land/std/colors/mod.ts";

function printEmptyELBs(elbs: object[]): void {
    elbs["LoadBalancerDescriptions"].map((elb) => {
        let name = elb["LoadBalancerName"];
        let dnsName = elb["DNSName"];
        if (elb["Instances"].length < 1) {
            console.log(bold(red("Name:")), red(name));
            console.log(bold(red("DNS:")), red(dnsName));
            console.log(dim(red("    no instances")));
        }
    });
}

async function main(): Promise<void> {

        let v1Output = Deno.run({
            args: ["aws", "elb", "describe-load-balancers"],
            env: { "AWS_PROFILE": "infra_read_only" },
            stdout: "piped",
        }).output();
        let infraOutput = Deno.run({
            args: ["aws", "elb", "describe-load-balancers"],
            env: { "AWS_PROFILE": "v1_read_only" },
            stdout: "piped",
        }).output();

        let [v1ELBs, infraELBs] = await Promise.all([v1Output, infraOutput]);

        let decodedv1 = JSON.parse(new TextDecoder().decode(v1ELBs));
        let decodedInfra = JSON.parse(new TextDecoder().decode(v1ELBs));
        let header = (s) => underline(bold(red(s)));
        console.log(header("V1"));
        printEmptyELBs(decodedv1);
        console.log("");
        console.log(header("INFRA"));
        printEmptyELBs(decodedInfra);
}

main();