skiano

typography.inject(typePallette)
color.inject(colorPallette)

<TypographyStyles/>

// <Style>
//   .heading1 {
//    ...
//   }

skiano

const diff = (a, b) => Math.abs(a - b);
const removeSelf = (items, self) => (id) => items[id] !== items[self];
const makeComparator = (items, target) => (a, b) =>
  diff(items[target], items[b]) - diff(items[target], items[a]);

const getStableMatches = (items) => {
  const matches = [];
  const available = [...items.keys()];
  const preferences = available.map(id =>
   available.filter(removeSelf(items, id)).sort(makeComparator(items, id)));

skiano

// TAKES A 2D ARRAY OF LETTERS AND COMPRESSES TO STRING
// for example ...
// compressGrid([
//   ['A','A','A','B','B'],
//   ['B','A','B','B','B'],
//   ['B','A','B','B','B'],
//   ['B','A','B','B','B'],
// ])
// becomes...
// 'A2B1,BAB2,2'

skiano

const createCursor = (directions, onMove) => {
  const dirKeys = Object.keys(directions);
  const cursor = {};

  let location = 0;

  cursor.max = 1000;

  cursor.get = () => location;

skiano

// >>> is perf hack for flooring positive numbers
const rand = (min, max) => ((Math.random() * (max - min + 1)) >>> 0) + min
const randItem = (arr) => arr[rand(0, arr.length - 1)]

const isDef = v => typeof v !== 'undefined'
const isUndef = v => typeof v === 'undefined'

const directions = [
  (w, h, x, y, i) => y > 0 ? i - w : undefined,
  (w, h, x, y, i) => y < h - 1 ? i + w : undefined,

skiano

// walk around the edges of a grid
// and work toward the center
// Begin going right.
// When you are at an edge or a filled square, turn right.
const spiral = (w, h, fn) => {
  // a map where keys are visited indexes
  const visited = {}

  // translations represent increments for: right -> down -> left -> up
  const translations = [1, w, -1, -w]

skiano

// not really about performance
// but fun to make it one line
// this discussion looked interesting re estimating
// https://stackoverflow.com/questions/3693514/very-fast-3d-distance-check

const distance = (a, b) => Math.sqrt(a.reduce((total, _, i) => total + Math.pow(b[i] - a[i], 2), 0))

const _2d_ = distance([1, 2], [0, 4])
const _3d_ = distance([1, 2, 3], [0, 4, 5])

skiano

// logs this pattern
//         * 
//        * * 
//       *   * 
//      * * * * 
//     *       * 
//    * *     * * 
//   *   *   *   * 
//  * * * * * * * * 

skiano

// A compressor for anagram puzzle data
// because we know all the solutions to anagram puzzles
// have a very small number of characters, we can compress
// the data more strategically
//
// given a list of letters, this creates an encode and decode function
//
// for example
// given the letters:
//    'NCEHITK'

skiano

// -------------------------------------------------------------------------------------------------------
// Once (from source of async)
// @see https://github.com/caolan/async/blob/f5d86b80b986c8cad88a224a6f8b3ec154839490/lib/internal/once.js
// -------------------------------------------------------------------------------------------------------

function once(fn) {
    return function () {
        if (fn === null) return;
        var callFn = fn;
        fn = null;