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function getContain(
  targetWidth: number,
  targetHeight: number,
  containerWidth: number,
  containerHeight: number,
  xOffset = 0.5,
  yOffset = 0.5,
) {
  const targetAspectRatio = targetWidth / targetHeight;
  const containerAspectRatio = containerWidth / containerHeight;

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class Singleton {
    static #instance = null;
    constructor() {
        if (this.constructor.#instance) return this.constructor.#instance;
        else this.constructor.#instance = this;
    }
}

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const AbstractSingleton = (() => {
  const constructors = new Set();

  return class AbstractSingleton {
    constructor() {
      if (constructors.has(this.constructor)) throw new Error(`Already created instance: ${this.constructor.name}`);
      constructors.add(this.constructor);
    }
  };
})();

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const camelToSnake1 = (str) => str.replace(/[\w]([A-Z])/g, m => m[0] + '_' + m[1]).toLowerCase();

const CAMEL_REGEX = /[\w]([A-Z])/g;
const cb = m => m[0] + '_' + m[1];
const camelToSnake2 = (str) => str.replace(CAMEL_REGEX, cb).toLowerCase();

const camelToSnake3 = (() => {
  const CAMEL_REGEX = /[\w]([A-Z])/g;
  const cb = m => m[0] + '_' + m[1];
  return (str) => str.replace(CAMEL_REGEX, cb).toLowerCase();

fronterior

const CAMEL_REGEX = /[\w]([A-Z])/g;
const cb = m => m[0] + '_' + m[1];
const camelToSnake1 = (str: string) => str.replace(CAMEL_REGEX, cb).toLowerCase();

const camelToSnake2 = (str: string) => {
  const { length } = str;
  let result = '', code = 0, i = 0;
  for (i = 0; i < length; i++) {
    code = str[i].charCodeAt();
    if (65 <= code && code <= 90) {

fronterior

const crypto = require('crypto');
const fs = require('fs');
const path = require('path');
const zlib = require('zlib');

const AppendInitVect = require('./appendInitVect');
const getCipherKey = require('./getCipherKey');

function encrypt({ file, password }) {
  // Generate a secure, pseudo random initialization vector.

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const crypto = require('crypto');
const fs = require('fs');
const path = require('path');
const zlib = require('zlib');

const getCipherKey = require('./getCipherKey');

function decrypt({ file, password }) {
  // First, get the initialization vector from the file.
  const readInitVect = fs.createReadStream(file, { end: 15 });

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// Part of https://github.com/chris-rock/node-crypto-examples

// Nodejs encryption of buffers
var crypto = require('crypto'),
    algorithm = 'aes-256-ctr',
    password = 'd6F3Efeq';

var fs = require('fs');
var zlib = require('zlib');

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const heap = Array.from(Array(100), () => Math.floor(Math.random() * 100));

const main = () => {
    for (let i = 1; i < heap.length; i++) run(heap, i);
};
const run = (array, target) => {
    const root = Math.floor((target - 1) / 2);
    if (array[root] < array[target]) {
        let temp = array[root];
        array[root] = array[target];

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function quickSortinPlace(array: number[]) {
  const stack: [number, number][] = [[0, array.length - 1]];
  let target: [number, number];
  let temp: number;
  while (target = stack.shift()) {
    const [firstIndex, lastIndex] = target;

    const middleIndex = Math.floor((firstIndex + lastIndex) / 2);

    const pivot = array[middleIndex];