alexander-elgin

const getFactorial = (value) => {
  let prevTimestamp = Date.now();
  let currentValue = 0;
  let total = 1;

  while (currentValue < value) {
    const now = Date.now();

    if (now - prevTimestamp >= 1000) {
      total *= ++currentValue;

alexander-elgin

const {Storage} = require('@google-cloud/storage');

const storage = new Storage({
    projectId: 'akbarserver',
    keyFilename: './service-account.json'
});

function uploadFile(filename, bucketName) {
    return storage.bucket(bucketName).upload(filename, {
        gzip: true,

alexander-elgin

var ffmpeg = require('fluent-ffmpeg');
var path = require('path');

new ffmpeg(path.join(__dirname, 'input.mp4'))
    .takeScreenshots({
        filename: 'thumbnail.png',
        size: '640x480',
        timemarks: [ '50%' ],
    }, __dirname, function(err) {
        if (err) {

alexander-elgin

const getThumbnails = (videoUrl) => {
  const videoId = videoUrl.replace('https://www.youtube.com/watch?v=', '');
  return ['hqdefault', 'mqdefault', 'maxresdefault'].map(size => `https://img.youtube.com/vi/${videoId}/${size}.jpg`);
}

alexander-elgin

const getGoogleDriveFilePublicLink = (fileId) => `https://docs.google.com/uc?id=${fileId}`;

export default getGoogleDriveFilePublicLink;

alexander-elgin

function useFormik(props) {
  // useState to keep the same observable around without recreating it on each render
  const [formik] = React.useState(() =>
    mobx.observable({
      values: props.initialValues || {},
      touched: {}
    })
  )

  // just mutate state, this function itself can be considered an action+reducer 

alexander-elgin

const Web3 = require('web3');
const testnet = 'https://rinkeby.infura.io/';
const walletAddress = '0xcde7bd7943944dc558a427ef061400a4da9ee822';

void async function() {
  try {
    const web3 = new Web3(new Web3.providers.HttpProvider(testnet));
    const balance = await web3.eth.getBalance(walletAddress);
    console.log('the balance is', web3.utils.fromWei(balance, 'ether'))
  } catch (error) {

alexander-elgin

const axios = require('axios');
const dashcore = require('dashcore-lib');

const API_BASE_URL = 'https://testnet-insight.dashevo.org/insight-api-dash';

const sender = {
  address: 'yRtqi4khyBHknDGarrsgrJLdvDipmbcbXx',
  privateKey: '6e38851a2df2866b95e87aa7cb1c37356a5f6a2546ba7249b86a656288ed18dd'
};

alexander-elgin

const axios = require('axios');
const dashcore = require('dashcore-lib');

const API_BASE_URL = 'https://testnet-insight.dashevo.org/insight-api-dash';

const sender = {
  address: 'yRtqi4khyBHknDGarrsgrJLdvDipmbcbXx',
  privateKey: '6e38851a2df2866b95e87aa7cb1c37356a5f6a2546ba7249b86a656288ed18dd'
};

alexander-elgin

import React from 'react';
import messages from './messages.js';
import { Link } from 'react-router';
import { FormattedMessage } from 'react-intl';

const Home = () => (
  <div>
    <header>
      <FormattedMessage {...messages.home_link}>
        {(homeLink) => <FormattedMessage {...messages.header} values={{ link: <Link to="/">{ homeLink }</Link> }} />}