Getting values from Deno stdin

Question

How can we get values from standard input in Deno?

I don\'t know how to use Deno.stdin.

An example would be appreciated.

Answer 1

A simple confirmation which can be answered with y or n:

import { readLines } from "https://deno.land/std@0.76.0/io/bufio.ts";

async function confirm(question) {
    console.log(question);

    for await (const line of readLines(Deno.stdin)) {
        if (line === "y") {
            return true;
        } else if (line === "n") {
            return false;
        }
    }
}

const answer = await confirm("Do you want to go on? [y/n]");

Or if you want to prompt the user for a string:

import { readLines } from "https://deno.land/std@0.76.0/io/bufio.ts";

async function promptString(question) {
    console.log(question);

    for await (const line of readLines(Deno.stdin)) {
        return line;
    }
}

const userName = await promptString("Enter your name:");