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function withMemoization(func, identifierFunc) {
  const cache = new Map()

  return (...args) => {
    const identifier = identifierFunc(...args)
    if (cache.has(identifier)) {
      return cache.get(identifier)
    }
    const result = func(...args)
    cache.set(identifier, result)

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function chainable(obj) {
  const proxy = new Proxy(obj, {
    get(target, prop) {
      return typeof target[prop] === 'function'
        ? (...args) => target[prop](...args) || proxy
        : target[prop]
    },
  })
  return proxy
}

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function download(filename, text) {
  Object.assign(document.createElement("a"), {
    download: filename,
    href: "data:text/plain;charset=utf-8," + encodeURIComponent(text),
  }).click();
}

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const secs2Time = (secs) => {
  const hours = Math.floor(secs / 60 / 60).toString().padStart(2, 0)
  return hours + ':' + new Date(secs * 1000).toISOString().substr(14, 5)
}

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async function fetchLink(q) {
  const htmlStr = await fetch(
    'https://duckduckgo.com/?q=' + q + '&ia=web'
  ).then((r) => r.text())
  return `https://links.duckduckgo.com/${htmlStr.match(/\/(d.js.+?)&p_ent/)[1]}`
}

async function fetchDuck(q) {
  function transform({ u, t, a, i }) {
    return {

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function css(obj) {
  return Object.keys(obj)
    .map((key) => {
      const newKey = key.replace(
        /[A-Z]/,
        (match, index) => "-" + match.toLowerCase()
      );
      return `${newKey}:${obj[key]};`;
    })
    .join("\n");

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const parseToDOM = Range.prototype.createContextualFragment.bind(
  document.createRange()
);

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const functionalize = (arr) => {
  const result = {};
  for (let funcOrArr of arr) {
    const [func, indexOfData = 0] =
      funcOrArr.constructor.name === "Array" ? funcOrArr : [funcOrArr];
    const name = func.name || func;

    result[name] =
      (...args) =>
      (data) => {

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const fetch = (...args) =>
  import("node-fetch").then(({ default: fetch }) => fetch(...args));
const { buildQueryStr, timeTaken } = require("./helpers.js");

async function getSource({ q, ...params } = {}, page = 1) {
  if (!q) throw Error("{ q } is a manadatory parameter!");

  const url =
    `https://www.google.com/search?` +
    buildQueryStr({

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function scrollToBottom() {
  const scrollingElement = document.scrollingElement || document.body;
  scrollingElement.scrollTop = scrollingElement.scrollHeight;
}