晋太元中，武陵人捕鱼为业。缘溪行，忘路之远近。忽逢桃花林，夹岸数百步，中无杂树，芳草鲜美，落英缤纷。渔人甚异之，复前行，欲穷其林。 　　林尽水源，便得一山，山有小口，仿佛若有光。便舍船，从口入。初极狭，才通人。复行数十步，豁然开朗。土地平旷，屋舍俨然，有良田、美池、桑竹之属。阡陌交通，鸡犬相闻。其中往来种作，男女衣着，悉如外人。黄发垂髫，并怡然自乐。 　　见渔人，乃大惊，问所从来。具答之。便要还家，设酒杀鸡作食。村中闻有此人，咸来问讯。自云先世避秦时乱，率妻子邑人来此绝境，不复出焉，遂与外人间隔。问今是何世，乃不知有汉，无论魏晋。此人一一为具言所闻，皆叹惋。余人各复延至其家，皆出酒食。停数日，辞去。此中人语云：“不足为外人道也。”(间隔 一作：隔绝) 　　既出，得其船，便扶向路，处处志之。及郡下，诣太守，说如此。太守即遣人随其往，寻向所志，遂迷，不复得路。 　　南阳刘子骥，高尚士也，闻之，欣然规往。未果，寻病终。后遂无问津者。 sh-3ll

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DIR:/opt/alt/alt-nodejs11/root/lib/node_modules/npm/lib/utils/
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'use strict'
var semver = require('semver')
var supportedNode = [
  {ver: '6', min: '6.0.0'},
  {ver: '8', min: '8.0.0'},
  {ver: '9', min: '9.0.0'},
  {ver: '10', min: '10.0.0'},
  {ver: '11', min: '11.0.0'},
  {ver: '12', min: '12.0.0'}
]
var knownBroken = '<4.7.0'

var checkVersion = exports.checkVersion = function (version) {
  var versionNoPrerelease = version.replace(/-.*$/, '')
  return {
    version: versionNoPrerelease,
    broken: semver.satisfies(versionNoPrerelease, knownBroken),
    unsupported: !semver.satisfies(versionNoPrerelease, supportedNode.map(function (n) { return '^' + n.min }).join('||'))
  }
}

exports.checkForBrokenNode = function () {
  var nodejs = checkVersion(process.version)
  if (nodejs.broken) {
    console.error('ERROR: npm is known not to run on Node.js ' + process.version)
    supportedNode.forEach(function (rel) {
      if (semver.satisfies(nodejs.version, rel.ver)) {
        console.error('Node.js ' + rel.ver + " is supported but the specific version you're running has")
        console.error('a bug known to break npm. Please update to at least ' + rel.min + ' to use this')
        console.error('version of npm. You can find the latest release of Node.js at https://nodejs.org/')
        process.exit(1)
      }
    })
    var supportedMajors = supportedNode.map(function (n) { return n.ver }).join(', ')
    console.error("You'll need to upgrade to a newer version in order to use this")
    console.error('version of npm. Supported versions are ' + supportedMajors + '. You can find the')
    console.error('latest version at https://nodejs.org/')
    process.exit(1)
  }
}

exports.checkForUnsupportedNode = function () {
  var nodejs = checkVersion(process.version)
  if (nodejs.unsupported) {
    var log = require('npmlog')
    var supportedMajors = supportedNode.map(function (n) { return n.ver }).join(', ')
    log.warn('npm', 'npm does not support Node.js ' + process.version)
    log.warn('npm', 'You should probably upgrade to a newer version of node as we')
    log.warn('npm', "can't make any promises that npm will work with this version.")
    log.warn('npm', 'Supported releases of Node.js are the latest release of ' + supportedMajors + '.')
    log.warn('npm', 'You can find the latest version at https://nodejs.org/')
  }
}