deno 1.0 command line test

index.ts

//https://www.youtube.com/watch?v=hVqNwrpCtm4
import { parse } from "https://deno.land/std/flags/mod.ts";
import { TextProtoReader } from "https://deno.land/std/textproto/mod.ts";
import { BufReader } from "https://deno.land/std/io/bufio.ts";

const parsedArgs = parse(Deno.args);

async function main() {
  if (parsedArgs.h || parsedArgs.help || parsedArgs._.length === 0) {
    console.log("try saying 'hi'");
  } else {
    const tpr = new TextProtoReader(new BufReader(Deno.stdin));
    while (true) {
      const te = new TextEncoder();
      await Deno.stdout.write(te.encode("> "));
      const line = await tpr.readLine();
      if (line === "hi") {
        console.log("hi");
      } else if (line === "close") {
        break;
      } else {
        console.log("I dont know what you are saying, try 'hi' again, or 'close'");
      }
    }
  }
  await new Promise((resolve): number => setTimeout(resolve, 0));
}

main();