Server : nginx/1.18.0 System : Linux localhost 6.14.3-x86_64-linode168 #1 SMP PREEMPT_DYNAMIC Mon Apr 21 19:47:55 EDT 2025 x86_64 User : www-data ( 33) PHP Version : 8.0.16 Disable Function : pcntl_alarm,pcntl_fork,pcntl_waitpid,pcntl_wait,pcntl_wifexited,pcntl_wifstopped,pcntl_wifsignaled,pcntl_wifcontinued,pcntl_wexitstatus,pcntl_wtermsig,pcntl_wstopsig,pcntl_signal,pcntl_signal_get_handler,pcntl_signal_dispatch,pcntl_get_last_error,pcntl_strerror,pcntl_sigprocmask,pcntl_sigwaitinfo,pcntl_sigtimedwait,pcntl_exec,pcntl_getpriority,pcntl_setpriority,pcntl_async_signals,pcntl_unshare, Directory :  /var/www/ecommerce/node_modules/caniuse-lite/dist/unpacker/

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'use strict'

const statuses = require('../lib/statuses')
const supported = require('../lib/supported')
const browsers = require('./browsers').browsers
const versions = require('./browserVersions').browserVersions

const MATH2LOG = Math.log(2)

function unpackSupport(cipher) {
  // bit flags
  let stats = Object.keys(supported).reduce((list, support) => {
    if (cipher & supported[support]) list.push(support)
    return list
  }, [])

  // notes
  let notes = cipher >> 7
  let notesArray = []
  while (notes) {
    let note = Math.floor(Math.log(notes) / MATH2LOG) + 1
    notesArray.unshift(`#${note}`)
    notes -= Math.pow(2, note - 1)
  }

  return stats.concat(notesArray).join(' ')
}

function unpackFeature(packed) {
  let unpacked = { status: statuses[packed.B], title: packed.C }
  unpacked.stats = Object.keys(packed.A).reduce((browserStats, key) => {
    let browser = packed.A[key]
    browserStats[browsers[key]] = Object.keys(browser).reduce(
      (stats, support) => {
        let packedVersions = browser[support].split(' ')
        let unpacked2 = unpackSupport(support)
        packedVersions.forEach(v => (stats[versions[v]] = unpacked2))
        return stats
      },
      {}
    )
    return browserStats
  }, {})
  return unpacked
}

module.exports = unpackFeature
module.exports.default = unpackFeature