Илья Герасимов

var reRegExpChar = /[\\^$.*+?()[\]{}|]/g;
var sourceString = '(( @';

[...sourceString]
    .map(char =>
        (
            sourceString.match(
                RegExp(char.replace(reRegExpChar, '\\$&'), 'gi'),
            ) || []
        ).length <= 1
            ? '('
            : ')',
    )
    .join('');

['07.09.1984', '05.09.1985', '03.02.2000']
  .map(date =>
    parseInt(
      date
        .split('.')
        .slice(0, 2)
        .reverse()
        .join(''),
      10,
    ),
  )
  .sort(compareFunc);

const stat = fs.statSync('./path/to/file');
console.log(stat.size);

const gen = mySaga();
const eff = gen.next().value;
expect(eff).toEqual(
  all([
    takeLatest(Types.FETCH_INFO_DISK_REQUEST, fetchDisk),
    takeLatest(Types.FETCH_RESOURCES_REQUEST, fetchResources),
    // ...
  ]),
);

const controllerCheckInput = value =>
    users.find({ login: value }).then(res => !!res);

  // вариант async/await
  (async () => {
    const exists = await controllerCheckInput('login');
    console.log(exists);
  })();

  // then/catch
  (() => {
    controllerCheckInput('login').then(exists => {
      console.log(exists);
    });
  })();

  // примерно так это выглядит в express
  app.post('/register', async (req, res) => {
    const exists = await controllerCheckInput('login');
    console.log(exists);
  });

(async () => {
  let elements = Array.from($("#site").find(".obj"));
  for (let element of elements) {
    const $item = $(element);
    await foo(myVar);
  }
})();

function funcname() {
  return new Promise((resolve, reject) => {
    request('https://site.ru', (err, res, body) => {
      if (err) {
        return reject(err);
      }

      return resolve([res, body]);
    });
  });
}

(async () => {
  const [res, body] = await funcname();
})();

onClick = (item) => {
    this.setState({ editItem : item, showModal : true});
    // ...
}

<CardModal item={this.state.editItem} show={this.state.showModal}/>