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import * as crypto from 'crypto';

export type PkcePayload = {
  code_verifier: string;
  code_challenge: string;
  code_challenge_method: 'S256';
};

export default function generatePKCE(length = 128): PkcePayload {
  if (length < 43) length = 43;

t1mofe1

export const timeUnits = [
  // { name: "y", milliseconds: 31_536_000_000 },
  // { name: "mo", milliseconds: 2_592_000_000 },
  { name: "d", milliseconds: 86_400_000 },
  { name: "h", milliseconds: 3_600_000 },
  { name: "m", milliseconds: 60_000 },
  { name: "s", milliseconds: 1_000 },
  { name: "ms", milliseconds: 1 },
];

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Number.prototype.toFixedNoRounding = function toFixedNoRounding(n = 0) {
    if (n < 0) n = 0;
    
    const str = this.toString();
    const dot = str.indexOf('.');
    
    if (dot === -1) return this;
    
    return Number(str.slice(0, dot) + n !== 0 ? str.substr(dot, dot + n) : '');
};

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/**
 * @function formatTime
 * @param {string} str - string with all times joined with space. Ex: "10s 4m"
 * @returns {string} total time in milliseconds
 */
module.exports = function formatTime(str) {
  let totalTime = 0;
  str.split(' ').forEach((field) => {
    field = field.trim();
    const regex = /(?<time>[0-9]{1,})(?<type>ms|s|m|h|d|w)/gi;

t1mofe1

const crypto = require('crypto');

const createError = (field, last = 'provided') => { throw Error(`${field} needs to be ${last}!`); };
const genHash = (secret, email, expiry, separator) => crypto.createHmac('sha256', secret).update(`${email}${separator}${expiry}`).digest('hex');

/**
 * @function createHash
 * @param {string} email - email
 * @param {string|number} secret - your secret (DO NOT PUBLISH IT)
 * @param {number|string} expiry - time in ms, when verification hash will be expired