Дима Паутов

const object = {
  prop1: 'value1'
};

// https://developer.mozilla.org/ru/docs/Web/JavaScript/Reference/Global_Objects/Object/hasOwnProperty
if (object.hasOwnProperty('prop1')) {
  // your code here
}

// Тоже самое, что и 1й, но немного отличается своей работой
// https://developer.mozilla.org/ru/docs/Web/JavaScript/Reference/Global_Objects/Object/hasOwnProperty#Example_hasOwnProperty_as_a_property
if (Object.prototype.hasOwnProperty.call(object, 'prop1')) {
  // your code here
}

if (object.prop1) {
  // your code here
}

if (typeof object.prop1 !== 'undefined') {
  // your code here
}

if ('prop1' in object) {
  // your code here
}

const salaries = {
  a: 1,
  b: 2,
  c: 3
};

console.log(Object.values(salaries).reduce((accumulator, value) => accumulator + value))

$('.resetForms').on('click', function (event) {
  event.preventDefault();
  $('ваш класс с формами').trigger('reset');
})

const mapStateToProps = ({ user, data }) => {
  const myProp = localStorage.get('myProp');

  return {
    myProp,
    user,
    data
  }
};

// api.js
import axios from 'axios';

const API = axios.create({
  baseURL: 'https://mysite.com/api',
  headers: {
    'Content-Type': 'application/json',
    'Authorization': process.env.TOKEN,
  },
  withCredentials: true,
});

API.interceptors.response.use(response => {
  console.log('yeeeeeeeeeeeeeeeeeeeeeeeee');
  console.log(response);

  return response;
}, error => {
  console.log('fuuuuuuuuuuuu');
  console.log(error);

  return Promise.reject(error);
});

export default API

// services/cart.js
import API from 'api'

export default {
  async getCart () {
    const { data } = await API.get('/cart')
  }
}

// services/catalog.js
import API from 'api'

export default {
  async getCatalog () {
    const { data } = await API.get('/catalog')
  }
}

// main.js
import { getCatalog } from 'services/catalog'
import { getCart } from 'services/cart'

async (() => {
  await Promise.all([
    getCatalog(),
    getCart()
  ])
})();

try {
  const response = await Promise.all(map(list, ({address}) => ymaps.geocode(`address`)))
  const coordinates = map(response, (coordinate) => coordinate.geoObjects.get(0).geometry.getCoordinates());
  allCoordinates.push(...coordinates);
} catch (error) {
  this.props.onError();
}