alekstar79

/**
 * @see https://developer.mozilla.org/en-US/docs/Web/API/WindowOrWorkerGlobalScope/queueMicrotask
 */
export const queueMicrotask = (function() {
  const queueMicrotask = typeof window !== 'undefined'
    ? window.queueMicrotask
    : undefined

  return queueMicrotask || (cb => {
    Promise.resolve().then(cb).catch(e => setTimeout(() => { throw e }))

alekstar79

const noop = () => {}

export class Cancelable extends Promise
{
  constructor(executor = noop)
  {
    super((resolve, reject) => {
      executor(v => {

        /**

alekstar79

/** "Lorem ipsum" style text. */

/**
* Produces a random number
* @return {Number} Random number
*/
export function gauss()
{
	return (Math.random() * 2 - 1) + (Math.random() * 2 - 1) + (Math.random() * 2 - 1)
}

alekstar79

export function Renderer({ minScale, maxScale, scaleSensitivity = 10 })
{
  const getInitialState = () => ({
    minScale,
    maxScale,
    scaleSensitivity,
    transformation: {
      originX: 0,
      originY: 0,
      translateX: 0,

alekstar79

const document = typeof window !== 'undefined' && typeof window.document !== 'undefined' ? window.document : {}

export const fullscreen = (function(fullscreen) {
  const isEnabled = false, fn = {}

  if (!fullscreen.some(map => {
    if (map[1] in document) {
      for (let i = 0; i < map.length; i++) {
        fn[fullscreen[0][i]] = map[i]
      }

alekstar79

/**
* @example declination(5, ['комментарий','комментария','комментариев'])
* @param {Number} n The number for which the ending will be calculated
* @param {Array} titles Word variants for 1,2,5
* @returns {String}
*/
export function declination(n, titles)
{
    return titles[(n % 10 === 1 && n % 100 !== 11) ? 0 : n % 10 >= 2 && n % 10 <= 4 && (n % 100 < 10 || n % 100 >= 20) ? 1 : 2]
}

alekstar79

/**
 * @param {Number} bytes
 * @param {Number} decimals
 * @return {string}
 */
export function format(bytes, decimals = 2)
{
    if (bytes === 0) return '0 B'

    const dim = ['B','KB','MB','GB','TB','PB','EB','ZB','YB'],

alekstar79

const nodes = []

export function removeNodes()
{
    nodes.forEach(el => el.parentNode && el.parentNode.removeChild(el))
    nodes.splice(0, nodes.length)
}

/**
* @param {String} link

alekstar79

/**
 * @param {{r: number, g: number, b: number}}
 * @return {string}
 */
export function rgbToHex({ r, g, b })
{
    return '#' + ((1 << 24) + (r << 16) + (g << 8) + b).toString(16).slice(1)
}

alekstar79

export function shift(arr, direction, n)
{
    const times = n > arr.length ? n % arr.length : n

    return arr.concat(arr.splice(0, (direction > 0 ? arr.length - times : times)))
}