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const color_distance = ([ L1, a1, b1 ], [ L2, a2, b2 ] ) => Math.hypot( L1 - L2, a1 - a2, b1 - b2 );

const linear =  x => x >= 0.04045 ? ((x + 0.055) / (1 + 0.055)) ** 2.4 : x / 12.92;

const gamma = x => x >= 0.0031308 ? 1.055 * x ** (1 / 2.4) - 0.055 : 12.92 * x;

const clamp = x => Math.min ( 255, Math.max ( 0, x ) );

const multiply = (a, b) => 

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// Matrices multiply
const multiply = (a, b) => a.map((_, r) => b[0].map((_, c) => a[r].reduce((s,_,i) => s + a[r][i] * b[i][c], 0)));

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onmessage = ({ data: { data, width, height } }) => {
  const add = (d, i, v) => {
    if (i >= d.length) return;
    d[i] += v;
  };

  const w = width * 4;
  let i = 0;
  for (let y = 0; y < height; y++) {
    for (let x = 0; x < width; x++, i += 4) {

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onmessage = ({ data: { data, width, height } }) => {
  const thresholdMap = [
    [15, 135, 45, 165],
    [195, 75, 225, 105],
    [60, 180, 30, 150],
    [240, 120, 210, 90],
  ];

  let min = 255,
    max = 0,

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onmessage = ({ data: { data, width, height } }) => {
  const add = (d, i, v) => {
    if (i >= d.length) return;
    d[i] += v;
  };

  let i = 0,
    w = width * 4;
  for (let y = 0; y < height; y++) {
    for (let x = 0; x < width; x++, i += 4) {

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const s2l = c => (c > 0.04045 ? ((c + 0.055) / 1.055) ** 2.4 : c / 12.92);
const l2s = c => (c > 0.0031308 ? 1.055 * Math.pow(c, 1 / 2.4) - 0.055 : 12.92 * c);
const LINEAR = new Array(256).fill().map((_, i) => s2l(i / 255));

onmessage = ({ data: { srcData, srcWidth, srcHeight, dstWidth, dstHeight } }) => {
  const { ceil, floor, abs, min, hypot } = Math;
  const ratioH = srcHeight / dstHeight;
  const ratioW = srcWidth / dstWidth;
  const halfRatioW = ceil(ratioW / 2);
  const halfRatioH = ceil(ratioH / 2);

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export function createWorker(callable) {
  const code = `(${callable.toString()})()`;
  const blob = new Blob([code], { type: 'text/javascript' });
  const url = URL.createObjectURL(blob);
  const worker = new Worker(url);
  URL.revokeObjectURL(url);
  return worker;
}

export function executeWorker(callable, data) {

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#!/bin/bash
#                                            __         __
#    ____  ____  _________  ____ ___  ____  / /_  _____/ /_
#   /_  / / __ \/ ___/ __ \/ __ `__ \/ __ \/ __/ / ___/ __ \
#    / /_/ /_/ / /  / /_/ / / / / / / /_/ / /__ (__  ) / / /
#   /___/ .___/_/   \____/_/ /_/ /_/ .___/\__(_)____/_/ /_/
#       /_/                        /_/

PS1='\u@\h \W\$ '

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Object.defineProperties(EventTarget.prototype, {
  on: { value: EventTarget.prototype.addEventListener },
  off: { value: EventTarget.prototype.removeEventListener },
  emit: {
    value: function (eventType, eventData) {
      let event = new Event(eventType);
      if (eventData) {
        Object.assign(event, eventData, { details: eventData });
      }
      this.dispatchEvent(event);

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