Server : LiteSpeed System : Linux premium163.web-hosting.com 4.18.0-513.18.1.lve.el8.x86_64 #1 SMP Thu Feb 22 12:55:50 UTC 2024 x86_64 User : infihsqw ( 644) PHP Version : 8.1.29 Disable Function : NONE Directory :  /lib/node_modules/npm/lib/install/

Upload File : current_dir [ Writeable ] document_root [ Writeable ]

'use strict'
module.exports = isOptional

const isOptDep = require('./is-opt-dep.js')
const moduleName = require('../utils/module-name.js')

function isOptional (node, seen) {
  if (!seen) seen = new Set()
  // If a node is not required by anything, then we've reached
  // the top level package.
  if (seen.has(node) || node.requiredBy.length === 0) {
    return false
  }
  seen.add(node)
  const swOptional = node.fromShrinkwrap && node.package._optional
  const result = node.requiredBy.every(function (req) {
    if (req.fakeChild && swOptional) return true
    return isOptDep(req, moduleName(node)) || isOptional(req, seen)
  })
  seen.delete(node)
  return result
}