bendc

:root {
  --ease-in-quad: cubic-bezier(.55, .085, .68, .53);
  --ease-in-cubic: cubic-bezier(.550, .055, .675, .19);
  --ease-in-quart: cubic-bezier(.895, .03, .685, .22);
  --ease-in-quint: cubic-bezier(.755, .05, .855, .06);
  --ease-in-expo: cubic-bezier(.95, .05, .795, .035);
  --ease-in-circ: cubic-bezier(.6, .04, .98, .335);

  --ease-out-quad: cubic-bezier(.25, .46, .45, .94);
  --ease-out-cubic: cubic-bezier(.215, .61, .355, 1);

bendc

const randomColor = (() => {
  "use strict";

  const randomInt = (min, max) => {
    return Math.floor(Math.random() * (max - min + 1)) + min;
  };

  return () => {
    var h = randomInt(0, 360);
    var s = randomInt(42, 98);

bendc

const letters = (() => {
  const caps = [...Array(26)].map((val, i) => String.fromCharCode(i + 65));
  return caps.concat(caps.map(letter => letter.toLowerCase()));
})();

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)

bendc

var supportsES6 = function() {
  try {
    new Function("(a = 0) => a");
    return true;
  }
  catch (err) {
    return false;
  }
}();

bendc

var elements = document.querySelectorAll("div"),
    callback = (el) => { console.log(el); };

// Spread operator
[...elements].forEach(callback);

// Array.from()
Array.from(elements).forEach(callback);

// for...of statement

bendc

const loop = (() => {
  const recur = (callback, count, i=0) => {
    if (i == count-1) return callback(i);
    callback(i);
    return recur(callback, count, i+1);
  };
  return (callback, count) => {
    if (count > 0) return recur(callback, count);
  };
})();

bendc

// ease-in

const easeInQuad = (t, b, c, d) =>
  c*(t/=d)*t + b;

const easeInCubic = (t, b, c, d) =>
  c*(t/=d)*t*t + b;

const easeInQuart = (t, b, c, d) =>
  c*(t/=d)*t*t*t + b;

bendc

"use strict";


// animation utils
// ===============

const trackTime = id => {
  const [entry] = performance.getEntriesByName(id);
  if (!entry) {
    performance.mark(id);

bendc

const toMap = (() => {
  const convert = (obj, map = new Map(), keys = Object.keys(obj).values()) => {
    const state = keys.next();
    if (state.done) return map;
    const key = state.value;
    map.set(key, obj[key]);
    return convert(obj, map, keys);
  };
  return obj => obj instanceof Map ? obj : convert(obj);
})();