bendc

const trackTime = timing => {
  const now = performance.now();
  if (!timing.startTime) timing.startTime = now;
  const elapsed = now - timing.startTime;
  const {duration} = timing;
  if (duration != null && duration <= elapsed) timing.startTime = null;
  return elapsed;
};

const delay = (callback, duration) => {

javilobo8

axios({
  url: 'http://localhost:5000/static/example.pdf',
  method: 'GET',
  responseType: 'blob', // important
}).then((response) => {
  const url = window.URL.createObjectURL(new Blob([response.data]));
  const link = document.createElement('a');
  link.href = url;
  link.setAttribute('download', 'file.pdf');
  document.body.appendChild(link);

bendc

const immutable = (() => {
  const getValue = obj => key => obj[key];
  const isObject = obj => Object(obj) === obj;
  const isMutable = obj => isObject(obj) && !Object.isFrozen(obj);

  return obj => {
    Object.keys(obj).map(getValue(obj)).filter(isMutable).forEach(immutable);
    return Object.freeze(obj);
  };
})();

bendc

const shuffle = (arr, mixed = [], pool = arr.slice()) => {
  const remaining = pool.length;
  if (!remaining) return mixed;
  const index = Math.floor(Math.random() * remaining);
  const el = pool.splice(index, 1).pop();
  mixed.push(el);
  return shuffle(arr, mixed, pool);
};

PurpleBooth

Project Title

One Paragraph of project description goes here

Getting Started

These instructions will get you a copy of the project up and running on your local machine for development and testing purposes. See deployment for notes on how to deploy the project on a live system.

Prerequisites

nolanlawson

// Promise.all is good for executing many promises at once
Promise.all([
  promise1,
  promise2
]);

// Promise.resolve is good for wrapping synchronous code
Promise.resolve().then(function () {
  if (somethingIsNotRight()) {
    throw new Error("I will be rejected asynchronously!");

bendc

// array utils
// =================================================================================================

const combine = (...arrays) => [].concat(...arrays);

const compact = arr => arr.filter(Boolean);

const contains = (() => Array.prototype.includes
  ? (arr, value) => arr.includes(value)
  : (arr, value) => arr.some(el => el === value)