いまだにChromeに対応していないWebサービス、puppeteer-dartとdart2nativeで勝手にCLIを作ってやる！

dependencies:
  puppeteer:
    git:
      url: [email protected]:YusukeIwaki/puppeteer-dart
      ref: feature/firefox

 $ dart2native main.dart -o awesome_app
Error: This project cannot run with sound null safety, because one or more project dependencies do not
support null safety:

 - package:cli_dialog
 - package:puppeteer
 - package:meta
 - package:async
 - package:pool
 - package:logging
 - package:archive
 - package:http
 - package:path
 - package:collection
 - package:dart_console
 - package:stack_trace
 - package:petitparser
 - package:crypto
 - package:http_parser
 - package:ffi
 - package:win32
 - package:convert
 - package:string_scanner
 - package:typed_data
 - package:source_span
 - package:charcode
 - package:term_glyph

Run 'pub outdated --mode=null-safety' to determine if versions of your
dependencies supporting null safety are available.


Failed to generate native files:
Generating AOT kernel dill failed!

class KusoServiceTop {
  Page page;
  KusoServiceTop(this.page);

  browseToLoginPage() async {
    await page.click("#sub_menu");

    await Future.wait([
      page.waitForNavigation(),
      page.click("li.login_page"),
    ]);
  }
}

class KusoServiceLogin {
  Page page;
  KusoServiceLogin(this.page);

  submitCredential(String username, String password) async {
    await page.waitForSelector("input[name='username']");
    await page.click("input[name='username']");

    await page.keyboard.type(username);
    await page.keyboard.press(Key.tab);
    await page.keyboard.type(password);
    await page.keyboard.press(Key.tab);

    await Future.wait([
      page.waitForNavigation(),
      page.keyboard.press(Key.enter),
    ]);
  }
}

class KusoServiceDataList {
  Page page;
  KusoServiceDataList(this.page);

  list() async {
    final cells = await page.$$(".cell_item");

    // 省略
  }
}

import 'package:puppeteer/puppeteer.dart';

doWithBrowser(Browser browser) async {
  final page = await browser.newPage();
  await page.setViewport(DeviceViewport());

  await page.goto("http://kusoservice.example.com/");

  final top = KusoServiceTop(page);
  await top.browseToLoginPage()

  final login = KusoServiceTop(page);
  await login.submitCredential("YusukeIwaki", "secretsecret");

  final dataList = KusoServiceDataList(page);
  for(DataItem item in await dataList.list()) {
    print(item);
  }
}

main() async {
  final browser = await puppeteerFirefox.launch();

  try {
    await doWithBrowser(browser);
  } finally {
    await browser.close();
  }
}

  final loginDialog = CLI_Dialog(questions: [
    ["User Name:", "username"],
    ["Password:", "password"],
  ]);
  final loginDialogAnswer = loginDialog.ask();

  await login.submitCredential(
    loginDialogAnswer['username'],
    loginDialogAnswer['password'],
  );

  // itemListが選択肢

  while (true) {
    final selectDataDialog = CLI_Dialog(listQuestions: [
      [
        {
          'question': 'Select data',
          'options':
              ["Exit"] + itemList.map((item) => item.toString()).toList(),
        },
        'data'
      ],
    ]);
    final String selectDataAnswer = selectDateDialog.ask()['data'];
    if (selectDataAnswer == 'Exit') break;

    // selectDataAnswerが選択されたもの
  }

 12/1: xxxx
 12/2: yyyy
 12/3: zzzz
 12/4: aaaa
 12/7: bbbb