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// Copyright 2018-2022 the Deno authors. All rights reserved. MIT license."use strict";((window) => {  const { stdin } = window.__bootstrap.files;  const { ArrayPrototypePush, StringPrototypeCharCodeAt, Uint8Array } =    window.__bootstrap.primordials;  const { isatty } = window.__bootstrap.tty;  const LF = StringPrototypeCharCodeAt("\n", 0);  const CR = StringPrototypeCharCodeAt("\r", 0);  const core = window.Deno.core;
  function alert(message = "Alert") {    if (!isatty(stdin.rid)) {      return;    }
    core.print(`${message} [Enter] `, false);
    readLineFromStdinSync();  }
  function confirm(message = "Confirm") {    if (!isatty(stdin.rid)) {      return false;    }
    core.print(`${message} [y/N] `, false);
    const answer = readLineFromStdinSync();
    return answer === "Y" || answer === "y";  }
  function prompt(message = "Prompt", defaultValue) {    defaultValue ??= null;
    if (!isatty(stdin.rid)) {      return null;    }
    core.print(`${message} `, false);
    if (defaultValue) {      core.print(`[${defaultValue}] `, false);    }
    return readLineFromStdinSync() || defaultValue;  }
  function readLineFromStdinSync() {    const c = new Uint8Array(1);    const buf = [];
    while (true) {      const n = stdin.readSync(c);      if (n === null || n === 0) {        break;      }      if (c[0] === CR) {        const n = stdin.readSync(c);        if (c[0] === LF) {          break;        }        ArrayPrototypePush(buf, CR);        if (n === null || n === 0) {          break;        }      }      if (c[0] === LF) {        break;      }      ArrayPrototypePush(buf, c[0]);    }    return core.decode(new Uint8Array(buf));  }
  window.__bootstrap.prompt = {    alert,    confirm,    prompt,  };})(this);