/proc/2156873/root/home/henzagold/oldsite/node_modules/@nuxt/utils/dist/ Current File: //proc/2156873/root/home/henzagold/oldsite/node_modules/@nuxt/utils/dist/utils.js
/*!
 * @nuxt/utils v2.15.8 (c) 2016-2021
 * Released under the MIT License
 * Repository: https://github.com/nuxt/nuxt.js
 * Website: https://nuxtjs.org
*/
'use strict';

Object.defineProperty(exports, '__esModule', { value: true });

const ufo = require('ufo');
const path = require('path');
const consola = require('consola');
const hash = require('hash-sum');
const fs = require('fs-extra');
const properlock = require('proper-lockfile');
const onExit = require('signal-exit');
const lodash = require('lodash');
const serialize = require('serialize-javascript');
const _createRequire = require('create-require');
const jiti = require('jiti');
const UAParser = require('ua-parser-js');
const semver = require('semver');

function _interopDefaultLegacy (e) { return e && typeof e === 'object' && 'default' in e ? e : { 'default': e }; }

const path__default = /*#__PURE__*/_interopDefaultLegacy(path);
const consola__default = /*#__PURE__*/_interopDefaultLegacy(consola);
const hash__default = /*#__PURE__*/_interopDefaultLegacy(hash);
const fs__default = /*#__PURE__*/_interopDefaultLegacy(fs);
const properlock__default = /*#__PURE__*/_interopDefaultLegacy(properlock);
const onExit__default = /*#__PURE__*/_interopDefaultLegacy(onExit);
const serialize__default = /*#__PURE__*/_interopDefaultLegacy(serialize);
const _createRequire__default = /*#__PURE__*/_interopDefaultLegacy(_createRequire);
const jiti__default = /*#__PURE__*/_interopDefaultLegacy(jiti);
const UAParser__default = /*#__PURE__*/_interopDefaultLegacy(UAParser);
const semver__default = /*#__PURE__*/_interopDefaultLegacy(semver);

const TARGETS = {
  server: 'server',
  static: 'static'
};

const MODES = {
  universal: 'universal',
  spa: 'spa'
};

const getContext = function getContext (req, res) {
  return { req, res }
};

const determineGlobals = function determineGlobals (globalName, globals) {
  const _globals = {};
  for (const global in globals) {
    if (typeof globals[global] === 'function') {
      _globals[global] = globals[global](globalName);
    } else {
      _globals[global] = globals[global];
    }
  }
  return _globals
};

const isFullStatic = function (options) {
  return !options.dev && !options._legacyGenerate && options.target === TARGETS.static && options.render.ssr
};

const encodeHtml = function encodeHtml (str) {
  return str.replace(/</g, '&lt;').replace(/>/g, '&gt;')
};

const isString = obj => typeof obj === 'string' || obj instanceof String;

const isNonEmptyString = obj => Boolean(obj && isString(obj));

const isPureObject = obj => !Array.isArray(obj) && typeof obj === 'object';

const isUrl = function isUrl (url) {
  return ufo.hasProtocol(url, true)
};

const urlJoin = ufo.joinURL;

/**
 * Wraps value in array if it is not already an array
 *
 * @param  {any} value
 * @return {array}
 */
const wrapArray = value => Array.isArray(value) ? value : [value];

const WHITESPACE_REPLACEMENTS = [
  [/[ \t\f\r]+\n/g, '\n'], // strip empty indents
  [/{\n{2,}/g, '{\n'], // strip start padding from blocks
  [/\n{2,}([ \t\f\r]*})/g, '\n$1'], // strip end padding from blocks
  [/\n{3,}/g, '\n\n'], // strip multiple blank lines (1 allowed)
  [/\n{2,}$/g, '\n'] // strip blank lines EOF (0 allowed)
];

const stripWhitespace = function stripWhitespace (string) {
  WHITESPACE_REPLACEMENTS.forEach(([regex, newSubstr]) => {
    string = string.replace(regex, newSubstr);
  });
  return string
};

const lockPaths = new Set();

const defaultLockOptions = {
  stale: 30000,
  onCompromised: err => consola__default['default'].warn(err)
};

function getLockOptions (options) {
  return Object.assign({}, defaultLockOptions, options)
}

function createLockPath ({ id = 'nuxt', dir, root }) {
  const sum = hash__default['default'](`${root}-${dir}`);

  return path__default['default'].resolve(root, 'node_modules/.cache/nuxt', `${id}-lock-${sum}`)
}

async function getLockPath (config) {
  const lockPath = createLockPath(config);

  // the lock is created for the lockPath as ${lockPath}.lock
  // so the (temporary) lockPath needs to exist
  await fs__default['default'].ensureDir(lockPath);

  return lockPath
}

async function lock ({ id, dir, root, options }) {
  const lockPath = await getLockPath({ id, dir, root });

  try {
    const locked = await properlock__default['default'].check(lockPath);
    if (locked) {
      consola__default['default'].fatal(`A lock with id '${id}' already exists on ${dir}`);
    }
  } catch (e) {
    consola__default['default'].debug(`Check for an existing lock with id '${id}' on ${dir} failed`, e);
  }

  let lockWasCompromised = false;
  let release;

  try {
    options = getLockOptions(options);

    const onCompromised = options.onCompromised;
    options.onCompromised = (err) => {
      onCompromised(err);
      lockWasCompromised = true;
    };

    release = await properlock__default['default'].lock(lockPath, options);
  } catch (e) {}

  if (!release) {
    consola__default['default'].warn(`Unable to get a lock with id '${id}' on ${dir} (but will continue)`);
    return false
  }

  if (!lockPaths.size) {
    // make sure to always cleanup our temporary lockPaths
    onExit__default['default'](() => {
      for (const lockPath of lockPaths) {
        fs__default['default'].removeSync(lockPath);
      }
    });
  }

  lockPaths.add(lockPath);

  return async function lockRelease () {
    try {
      await fs__default['default'].remove(lockPath);
      lockPaths.delete(lockPath);

      // release as last so the lockPath is still removed
      // when it fails on a compromised lock
      await release();
    } catch (e) {
      if (!lockWasCompromised || !e.message.includes('already released')) {
        consola__default['default'].debug(e);
        return
      }

      // proper-lockfile doesnt remove lockDir when lock is compromised
      // removing it here could cause the 'other' process to throw an error
      // as well, but in our case its much more likely the lock was
      // compromised due to mtime update timeouts
      const lockDir = `${lockPath}.lock`;
      if (await fs__default['default'].exists(lockDir)) {
        await fs__default['default'].remove(lockDir);
      }
    }
  }
}

const startsWithAlias = aliasArray => str => aliasArray.some(c => str.startsWith(c));

const startsWithSrcAlias = startsWithAlias(['@', '~']);

const startsWithRootAlias = startsWithAlias(['@@', '~~']);

const isWindows = process.platform.startsWith('win');

const wp = function wp (p = '') {
  if (isWindows) {
    return p.replace(/\\/g, '\\\\')
  }
  return p
};

// Kept for backward compat (modules may use it from template context)
const wChunk = function wChunk (p = '') {
  return p
};

const reqSep = /\//g;
const sysSep = lodash.escapeRegExp(path__default['default'].sep);
const normalize = string => string.replace(reqSep, sysSep);

const r = function r (...args) {
  const lastArg = args[args.length - 1];

  if (startsWithSrcAlias(lastArg)) {
    return wp(lastArg)
  }

  return wp(path__default['default'].resolve(...args.map(normalize)))
};

const relativeTo = function relativeTo (...args) {
  const dir = args.shift();

  // Keep webpack inline loader intact
  if (args[0].includes('!')) {
    const loaders = args.shift().split('!');

    return loaders.concat(relativeTo(dir, loaders.pop(), ...args)).join('!')
  }

  // Resolve path
  const resolvedPath = r(...args);

  // Check if path is an alias
  if (startsWithSrcAlias(resolvedPath)) {
    return resolvedPath
  }

  // Make correct relative path
  let rp = path__default['default'].relative(dir, resolvedPath);
  if (rp[0] !== '.') {
    rp = '.' + path__default['default'].sep + rp;
  }

  return wp(rp)
};

function defineAlias (src, target, prop, opts = {}) {
  const { bind = true, warn = false } = opts;

  if (Array.isArray(prop)) {
    for (const p of prop) {
      defineAlias(src, target, p, opts);
    }
    return
  }

  let targetVal = target[prop];
  if (bind && typeof targetVal === 'function') {
    targetVal = targetVal.bind(target);
  }

  let warned = false;

  Object.defineProperty(src, prop, {
    get: () => {
      if (warn && !warned) {
        warned = true;
        consola__default['default'].warn({
          message: `'${prop}' is deprecated'`,
          // eslint-disable-next-line unicorn/error-message
          additional: new Error().stack.split('\n').splice(2).join('\n')
        });
      }
      return targetVal
    }
  });
}

const isIndex = s => /(.*)\/index\.[^/]+$/.test(s);

function isIndexFileAndFolder (pluginFiles) {
  // Return early in case the matching file count exceeds 2 (index.js + folder)
  if (pluginFiles.length !== 2) {
    return false
  }
  return pluginFiles.some(isIndex)
}

const getMainModule = () => {
  return (require && require.main) || (module && module.main) || module
};

const routeChildren = function (route) {
  const hasChildWithEmptyPath = route.children.some(child => child.path === '');
  if (hasChildWithEmptyPath) {
    return route.children
  }
  return [
    // Add default child to render parent page
    {
      ...route,
      children: undefined
    },
    ...route.children
  ]
};

const flatRoutes = function flatRoutes (router, fileName = '', routes = []) {
  router.forEach((r) => {
    if ([':', '*'].some(c => r.path.includes(c))) {
      return
    }
    const route = `${fileName}${r.path}/`.replace(/\/+/g, '/');
    if (r.children) {
      return flatRoutes(routeChildren(r), route, routes)
    }

    // if child path is already absolute, do not make any concatenations
    if (r.path && r.path.startsWith('/')) {
      routes.push(r.path);
    } else if (route !== '/' && route[route.length - 1] === '/') {
      routes.push(route.slice(0, -1));
    } else {
      routes.push(route);
    }
  });
  return routes
};

// eslint-disable-next-line default-param-last
function cleanChildrenRoutes (routes, isChild = false, routeNameSplitter = '-', trailingSlash, parentRouteName) {
  const regExpIndex = new RegExp(`${routeNameSplitter}index$`);
  const regExpParentRouteName = new RegExp(`^${parentRouteName}${routeNameSplitter}`);
  const routesIndex = [];
  routes.forEach((route) => {
    if (regExpIndex.test(route.name) || route.name === 'index') {
      const res = route.name.replace(regExpParentRouteName, '').split(routeNameSplitter);
      routesIndex.push(res);
    }
  });
  routes.forEach((route) => {
    route.path = isChild ? route.path.replace('/', '') : route.path;
    if (route.path.includes('?')) {
      if (route.name.endsWith(`${routeNameSplitter}index`)) {
        route.path = route.path.replace(/\?$/, '');
      }
      const names = route.name.replace(regExpParentRouteName, '').split(routeNameSplitter);
      const paths = route.path.split('/');
      if (!isChild) {
        paths.shift();
      } // clean first / for parents
      routesIndex.forEach((r) => {
        const i = r.indexOf('index');
        if (i < paths.length) {
          for (let a = 0; a <= i; a++) {
            if (a === i) {
              paths[a] = paths[a].replace('?', '');
            }
            if (a < i && names[a] !== r[a]) {
              break
            }
          }
        }
      });
      route.path = (isChild ? '' : '/') + paths.join('/');
    }
    route.name = route.name.replace(regExpIndex, '');
    if (route.children) {
      const defaultChildRoute = route.children.find(child => child.path === '/' || child.path === '');
      const routeName = route.name;
      if (defaultChildRoute) {
        route.children.forEach((child) => {
          if (child.path !== defaultChildRoute.path) {
            const parts = child.path.split('/');
            parts[1] = parts[1].endsWith('?') ? parts[1].substr(0, parts[1].length - 1) : parts[1];
            child.path = parts.join('/');
          }
        });
        delete route.name;
      }
      route.children = cleanChildrenRoutes(route.children, true, routeNameSplitter, trailingSlash, routeName);
    }
  });
  return routes
}

const DYNAMIC_ROUTE_REGEX = /^\/([:*])/;

const sortRoutes = function sortRoutes (routes) {
  routes.sort((a, b) => {
    if (!a.path.length) {
      return -1
    }
    if (!b.path.length) {
      return 1
    }
    // Order: /static, /index, /:dynamic
    // Match exact route before index: /login before /index/_slug
    if (a.path === '/') {
      return DYNAMIC_ROUTE_REGEX.test(b.path) ? -1 : 1
    }
    if (b.path === '/') {
      return DYNAMIC_ROUTE_REGEX.test(a.path) ? 1 : -1
    }

    let i;
    let res = 0;
    let y = 0;
    let z = 0;
    const _a = a.path.split('/');
    const _b = b.path.split('/');
    for (i = 0; i < _a.length; i++) {
      if (res !== 0) {
        break
      }
      y = _a[i] === '*' ? 2 : _a[i].includes(':') ? 1 : 0;
      z = _b[i] === '*' ? 2 : _b[i].includes(':') ? 1 : 0;
      res = y - z;
      // If a.length >= b.length
      if (i === _b.length - 1 && res === 0) {
        // unless * found sort by level, then alphabetically
        res = _a[i] === '*'
          ? -1
          : (
            _a.length === _b.length ? a.path.localeCompare(b.path) : (_a.length - _b.length)
          );
      }
    }

    if (res === 0) {
      // unless * found sort by level, then alphabetically
      res = _a[i - 1] === '*' && _b[i]
        ? 1
        : (
          _a.length === _b.length ? a.path.localeCompare(b.path) : (_a.length - _b.length)
        );
    }
    return res
  });

  routes.forEach((route) => {
    if (route.children) {
      sortRoutes(route.children);
    }
  });

  return routes
};

const createRoutes = function createRoutes ({
  files,
  srcDir,
  pagesDir = '',
  routeNameSplitter = '-',
  supportedExtensions = ['vue', 'js'],
  trailingSlash
}) {
  const routes = [];
  files.forEach((file) => {
    const keys = file
      .replace(new RegExp(`^${pagesDir}`), '')
      .replace(new RegExp(`\\.(${supportedExtensions.join('|')})$`), '')
      .replace(/\/{2,}/g, '/')
      .split('/')
      .slice(1);
    const route = { name: '', path: '', component: r(srcDir, file) };
    let parent = routes;
    keys.forEach((key, i) => {
      // remove underscore only, if its the prefix
      const sanitizedKey = key.startsWith('_') ? key.substr(1) : key;

      route.name = route.name
        ? route.name + routeNameSplitter + sanitizedKey
        : sanitizedKey;
      route.name += key === '_' ? 'all' : '';
      route.chunkName = file.replace(new RegExp(`\\.(${supportedExtensions.join('|')})$`), '');
      const child = parent.find(parentRoute => parentRoute.name === route.name);

      if (child) {
        child.children = child.children || [];
        parent = child.children;
        route.path = '';
      } else if (key === 'index' && i + 1 === keys.length) {
        route.path += i > 0 ? '' : '/';
      } else {
        route.path += '/' + ufo.normalizeURL(getRoutePathExtension(key));
        if (key.startsWith('_') && key.length > 1) {
          route.path += '?';
        }
      }
    });
    if (trailingSlash !== undefined) {
      route.pathToRegexpOptions = { ...route.pathToRegexpOptions, strict: true };
      if (trailingSlash && !route.path.endsWith('*')) {
        route.path = ufo.withTrailingSlash(route.path);
      } else {
        route.path = ufo.withoutTrailingSlash(route.path);
      }
    }

    parent.push(route);
  });

  sortRoutes(routes);
  return cleanChildrenRoutes(routes, false, routeNameSplitter, trailingSlash)
};

// Guard dir1 from dir2 which can be indiscriminately removed
const guardDir = function guardDir (options, key1, key2) {
  const dir1 = lodash.get(options, key1, false);
  const dir2 = lodash.get(options, key2, false);

  if (
    dir1 &&
    dir2 &&
    (
      dir1 === dir2 ||
      (
        dir1.startsWith(dir2) &&
        !path__default['default'].basename(dir1).startsWith(path__default['default'].basename(dir2))
      )
    )
  ) {
    const errorMessage = `options.${key2} cannot be a parent of or same as ${key1}`;
    consola__default['default'].fatal(errorMessage);
    throw new Error(errorMessage)
  }
};

const getRoutePathExtension = (key) => {
  if (key === '_') {
    return '*'
  }

  if (key.startsWith('_')) {
    return `:${key.substr(1)}`
  }

  return key
};

const promisifyRoute = function promisifyRoute (fn, ...args) {
  // If routes is an array
  if (Array.isArray(fn)) {
    return Promise.resolve(fn)
  }
  // If routes is a function expecting a callback
  if (fn.length === arguments.length) {
    return new Promise((resolve, reject) => {
      fn((err, routeParams) => {
        if (err) {
          reject(err);
        }
        resolve(routeParams);
      }, ...args);
    })
  }
  let promise = fn(...args);
  if (
    !promise ||
    (!(promise instanceof Promise) && typeof promise.then !== 'function')
  ) {
    promise = Promise.resolve(promise);
  }
  return promise
};

function normalizeFunctions (obj) {
  if (typeof obj !== 'object' || Array.isArray(obj) || obj === null) {
    return obj
  }
  for (const key in obj) {
    if (key === '__proto__' || key === 'constructor') {
      continue
    }
    const val = obj[key];
    if (val !== null && typeof val === 'object' && !Array.isArray(obj)) {
      obj[key] = normalizeFunctions(val);
    }
    if (typeof obj[key] === 'function') {
      const asString = obj[key].toString();
      const match = asString.match(/^([^{(]+)=>\s*([\0-\uFFFF]*)/);
      if (match) {
        const fullFunctionBody = match[2].match(/^{?(\s*return\s+)?([\0-\uFFFF]*?)}?$/);
        let functionBody = fullFunctionBody[2].trim();
        if (fullFunctionBody[1] || !match[2].trim().match(/^\s*{/)) {
          functionBody = `return ${functionBody}`;
        }
        // eslint-disable-next-line no-new-func
        obj[key] = new Function(...match[1].split(',').map(arg => arg.trim()), functionBody);
      }
    }
  }
  return obj
}

function serializeFunction (func) {
  let open = false;
  func = normalizeFunctions(func);
  return serialize__default['default'](func)
    .replace(serializeFunction.assignmentRE, (_, spaces) => {
      return `${spaces}: function (`
    })
    .replace(serializeFunction.internalFunctionRE, (_, spaces, name, args) => {
      if (open) {
        return `${spaces}${name}: function (${args}) {`
      } else {
        open = true;
        return _
      }
    })
    .replace(new RegExp(`${(func.name || 'function').replace('$', '\\$')}\\s*\\(`), 'function(')
    .replace('function function', 'function')
}

serializeFunction.internalFunctionRE = /^(\s*)(?!(?:if)|(?:for)|(?:while)|(?:switch)|(?:catch))(\w+)\s*\((.*?)\)\s*\{/gm;
serializeFunction.assignmentRE = /^(\s*):(\w+)\(/gm;

const sequence = function sequence (tasks, fn) {
  return tasks.reduce(
    (promise, task) => promise.then(() => fn(task)),
    Promise.resolve()
  )
};

const parallel = function parallel (tasks, fn) {
  return Promise.all(tasks.map(fn))
};

const chainFn = function chainFn (base, fn) {
  if (typeof fn !== 'function') {
    return base
  }

  if (typeof base !== 'function') {
    return fn
  }

  return function (arg0, ...args) {
    const next = (previous = arg0) => {
      const fnResult = fn.call(this, previous, ...args);

      if (fnResult && typeof fnResult.then === 'function') {
        return fnResult.then(res => res || previous)
      }

      return fnResult || previous
    };

    const baseResult = base.call(this, arg0, ...args);

    if (baseResult && typeof baseResult.then === 'function') {
      return baseResult.then(res => next(res))
    }

    return next(baseResult)
  }
};

async function promiseFinally (fn, finalFn) {
  let result;
  try {
    if (typeof fn === 'function') {
      result = await fn();
    } else {
      result = await fn;
    }
  } finally {
    finalFn();
  }
  return result
}

const timeout = function timeout (fn, ms, msg) {
  let timerId;
  const warpPromise = promiseFinally(fn, () => clearTimeout(timerId));
  const timerPromise = new Promise((resolve, reject) => {
    timerId = setTimeout(() => reject(new Error(msg)), ms);
  });
  return Promise.race([warpPromise, timerPromise])
};

const waitFor = function waitFor (ms) {
  return new Promise(resolve => setTimeout(resolve, ms || 0))
};
class Timer {
  constructor () {
    this._times = new Map();
  }

  start (name, description) {
    const time = {
      name,
      description,
      start: this.hrtime()
    };
    this._times.set(name, time);
    return time
  }

  end (name) {
    if (this._times.has(name)) {
      const time = this._times.get(name);
      time.duration = this.hrtime(time.start);
      this._times.delete(name);
      return time
    }
  }

  hrtime (start) {
    const useBigInt = typeof process.hrtime.bigint === 'function';
    if (start) {
      const end = useBigInt ? process.hrtime.bigint() : process.hrtime(start);
      return useBigInt
        ? (end - start) / BigInt(1000000)
        : (end[0] * 1e3) + (end[1] * 1e-6)
    }
    return useBigInt ? process.hrtime.bigint() : process.hrtime()
  }

  clear () {
    this._times.clear();
  }
}

const createRequire = (filename, useJiti = global.__NUXT_DEV__) => {
  if (useJiti && typeof jest === 'undefined') {
    return jiti__default['default'](filename)
  }

  return _createRequire__default['default'](filename)
};

const _require = createRequire();

function isHMRCompatible (id) {
  return !/[/\\]mongoose[/\\/]/.test(id)
}

function isExternalDependency (id) {
  return /[/\\]node_modules[/\\]/.test(id)
}

function clearRequireCache (id) {
  if (isExternalDependency(id) && isHMRCompatible(id)) {
    return
  }

  const entry = getRequireCacheItem(id);

  if (!entry) {
    delete _require.cache[id];
    return
  }

  if (entry.parent) {
    entry.parent.children = entry.parent.children.filter(e => e.id !== id);
  }

  // Needs to be cleared before children, to protect against circular deps (#7966)
  delete _require.cache[id];

  for (const child of entry.children) {
    clearRequireCache(child.id);
  }
}

function scanRequireTree (id, files = new Set()) {
  if (isExternalDependency(id) || files.has(id)) {
    return files
  }

  const entry = getRequireCacheItem(id);

  if (!entry) {
    files.add(id);
    return files
  }

  files.add(entry.id);

  for (const child of entry.children) {
    scanRequireTree(child.id, files);
  }

  return files
}

function getRequireCacheItem (id) {
  try {
    return _require.cache[id]
  } catch (e) {
  }
}

function resolveModule (id, paths) {
  if (typeof paths === 'string') {
    paths = [paths];
  }
  return _require.resolve(id, {
    paths: [].concat(...(global.__NUXT_PREPATHS__ || []), paths || [], global.__NUXT_PATHS__ || [], process.cwd())
  })
}

function requireModule (id, paths) {
  return _require(resolveModule(id, paths))
}

function tryRequire (id, paths) {
  try { return requireModule(id, paths) } catch (e) { }
}

function tryResolve (id, paths) {
  try { return resolveModule(id, paths) } catch (e) { }
}

function getPKG (id, paths) {
  return tryRequire(path.join(id, 'package.json'), paths)
}

const ModernBrowsers = {
  Edge: '16',
  Firefox: '60',
  Chrome: '61',
  'Chrome Headless': '61',
  Chromium: '61',
  Iron: '61',
  Safari: '10.1',
  Opera: '48',
  Yandex: '18',
  Vivaldi: '1.14',
  'Mobile Safari': '10.3'
};

let __modernBrowsers;

const getModernBrowsers = () => {
  if (__modernBrowsers) {
    return __modernBrowsers
  }

  __modernBrowsers = Object.keys(ModernBrowsers)
    .reduce((allBrowsers, browser) => {
      allBrowsers[browser] = semver__default['default'].coerce(ModernBrowsers[browser]);
      return allBrowsers
    }, {});
  return __modernBrowsers
};

const isModernBrowser = (ua) => {
  if (!ua) {
    return false
  }
  const { browser } = UAParser__default['default'](ua);
  const browserVersion = semver__default['default'].coerce(browser.version);
  if (!browserVersion) {
    return false
  }
  const modernBrowsers = getModernBrowsers();
  return Boolean(modernBrowsers[browser.name] && semver__default['default'].gte(browserVersion, modernBrowsers[browser.name]))
};

const isModernRequest = (req, modernMode = false) => {
  if (modernMode === false) {
    return false
  }

  const { socket = {}, headers } = req;
  if (socket._modern === undefined) {
    const ua = headers && headers['user-agent'];
    socket._modern = isModernBrowser(ua);
  }

  return socket._modern
};

// https://gist.github.com/samthor/64b114e4a4f539915a95b91ffd340acc
const safariNoModuleFix = '!function(){var e=document,t=e.createElement("script");if(!("noModule"in t)&&"onbeforeload"in t){var n=!1;e.addEventListener("beforeload",function(e){if(e.target===t)n=!0;else if(!e.target.hasAttribute("nomodule")||!n)return;e.preventDefault()},!0),t.type="module",t.src=".",e.head.appendChild(t),t.remove()}}();';

exports.MODES = MODES;
exports.ModernBrowsers = ModernBrowsers;
exports.TARGETS = TARGETS;
exports.Timer = Timer;
exports.chainFn = chainFn;
exports.clearRequireCache = clearRequireCache;
exports.createLockPath = createLockPath;
exports.createRequire = createRequire;
exports.createRoutes = createRoutes;
exports.defaultLockOptions = defaultLockOptions;
exports.defineAlias = defineAlias;
exports.determineGlobals = determineGlobals;
exports.encodeHtml = encodeHtml;
exports.flatRoutes = flatRoutes;
exports.getContext = getContext;
exports.getLockOptions = getLockOptions;
exports.getLockPath = getLockPath;
exports.getMainModule = getMainModule;
exports.getPKG = getPKG;
exports.getRequireCacheItem = getRequireCacheItem;
exports.guardDir = guardDir;
exports.isExternalDependency = isExternalDependency;
exports.isFullStatic = isFullStatic;
exports.isHMRCompatible = isHMRCompatible;
exports.isIndexFileAndFolder = isIndexFileAndFolder;
exports.isModernBrowser = isModernBrowser;
exports.isModernRequest = isModernRequest;
exports.isNonEmptyString = isNonEmptyString;
exports.isPureObject = isPureObject;
exports.isString = isString;
exports.isUrl = isUrl;
exports.isWindows = isWindows;
exports.lock = lock;
exports.lockPaths = lockPaths;
exports.normalizeFunctions = normalizeFunctions;
exports.parallel = parallel;
exports.promisifyRoute = promisifyRoute;
exports.r = r;
exports.relativeTo = relativeTo;
exports.requireModule = requireModule;
exports.resolveModule = resolveModule;
exports.safariNoModuleFix = safariNoModuleFix;
exports.scanRequireTree = scanRequireTree;
exports.sequence = sequence;
exports.serializeFunction = serializeFunction;
exports.sortRoutes = sortRoutes;
exports.startsWithAlias = startsWithAlias;
exports.startsWithRootAlias = startsWithRootAlias;
exports.startsWithSrcAlias = startsWithSrcAlias;
exports.stripWhitespace = stripWhitespace;
exports.timeout = timeout;
exports.tryRequire = tryRequire;
exports.tryResolve = tryResolve;
exports.urlJoin = urlJoin;
exports.wChunk = wChunk;
exports.waitFor = waitFor;
exports.wp = wp;
exports.wrapArray = wrapArray;