\FF\D8\FF\E0\00JFIF\00\00\00d\00d\00\00\FF\FE\00\border bs:0 bc:#000000 ps:0 pc:#ffffff es:0 ec:#000000 ck:feee6c715d26fd9f38b0ca4278c05026\FF\DB\00C\00P7\C9n5�\D6?\BD�\9Ds\EBp\9F[`8m\B7)o\B5\E8\E6I\99\FE3]]A2\BA\8Cw\D6E\93\\DEv\C8\009\F2\F1NI?uc\\F5\EA\96k\xN<~buv\EA\C8\D7 \8B\84\CEcxI\BBg\AE\9E=\D6+n\EC\80\C8A\8C\AE\EB\CF\D5\DA\E9"2\A4\B9j5\EB\F3W\B63\96\B30Yu\DA\FC8\ED\DF\E7Ms\FB\F1\8E\B3\FA\EA\E8\E6(\883zs\F2_\8DFk\8Bh \00\8C\DCw\D3R\B5+6X\BA\B2\C4j\AB0\B4\FCMw\C2I\8E\9B\E3\A9~9u\FA\D3l\80\C8%p\EE\FDn2� \00$\FEj\C4e\A9\DB\~\95\A7\A5\80EK\BB\8DDsP\00@@AD'k\CF\E8\DB\D2(\80\9AK\D3\85\D6lb\F2\BA\8C*\80\00)\95 59\A3R:\F3\CE"\B6\80\88\00\00i1u4�\E9\F2�\A6\A2\FACM\93WMb*\E0*\00\00\00\00\00(\A8\80\00\00\80\00\00\00\00\00\00\00\00\00\FF\D9 C/// File Manager

File Manager

Path: /opt/alt/alt-nodejs18/root/lib/node_modules/npm/node_modules/@npmcli/agent/lib/

Viewing File: dns.js

'use strict'

const { LRUCache } = require('lru-cache')
const dns = require('dns')

// this is a factory so that each request can have its own opts (i.e. ttl)
// while still sharing the cache across all requests
const cache = new LRUCache({ max: 50 })

const getOptions = ({
  family = 0,
  hints = dns.ADDRCONFIG,
  all = false,
  verbatim = undefined,
  ttl = 5 * 60 * 1000,
  lookup = dns.lookup,
}) => ({
  // hints and lookup are returned since both are top level properties to (net|tls).connect
  hints,
  lookup: (hostname, ...args) => {
    const callback = args.pop() // callback is always last arg
    const lookupOptions = args[0] ?? {}

    const options = {
      family,
      hints,
      all,
      verbatim,
      ...(typeof lookupOptions === 'number' ? { family: lookupOptions } : lookupOptions),
    }

    const key = JSON.stringify({ hostname, ...options })

    if (cache.has(key)) {
      const cached = cache.get(key)
      return process.nextTick(callback, null, ...cached)
    }

    lookup(hostname, options, (err, ...result) => {
      if (err) {
        return callback(err)
      }

      cache.set(key, result, { ttl })
      return callback(null, ...result)
    })
  },
})

module.exports = {
  cache,
  getOptions,
}