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?? access.js(5.45 KB)
?? adduser.js(2.2 KB)
?? audit.js(11.95 KB)
?? bin.js(729 B)
?? birthday.js(508 B)
?? bugs.js(815 B)
?? cache.js(7.08 KB)
?? ci.js(3.63 KB)
?? completion.js(8.91 KB)
?? config.js(8.11 KB)
?? dedupe.js(1.37 KB)
?? deprecate.js(2.06 KB)
?? diff.js(8.1 KB)
?? dist-tag.js(5.47 KB)
?? docs.js(447 B)
?? doctor.js(9.22 KB)
?? edit.js(2 KB)
?? exec.js(2.44 KB)
?? explain.js(3.55 KB)
?? explore.js(2.33 KB)
?? find-dupes.js(602 B)
?? fund.js(6.37 KB)
?? get.js(524 B)
?? help-search.js(5.62 KB)
?? help.js(4.53 KB)
?? hook.js(3.93 KB)
?? init.js(6.81 KB)
?? install-ci-test.js(377 B)
?? install-test.js(374 B)
?? install.js(5.11 KB)
?? link.js(5.02 KB)
?? ll.js(234 B)
?? logout.js(1.34 KB)
?? ls.js(16.94 KB)
?? org.js(4.2 KB)
?? outdated.js(8.84 KB)
?? owner.js(5.88 KB)
?? pack.js(2.36 KB)
?? ping.js(874 B)
?? pkg.js(3.47 KB)
?? prefix.js(343 B)
?? profile.js(11.25 KB)
?? prune.js(779 B)
?? publish.js(6.33 KB)
?? query.js(2.81 KB)
?? rebuild.js(2.16 KB)
?? repo.js(1.24 KB)
?? restart.js(351 B)
?? root.js(298 B)
?? run-script.js(6.9 KB)
?? search.js(2.72 KB)
?? set-script.js(2.63 KB)
?? set.js(572 B)
?? shrinkwrap.js(2.64 KB)
?? star.js(1.87 KB)
?? stars.js(1.03 KB)
?? start.js(341 B)
?? stop.js(336 B)
?? team.js(4.44 KB)
?? test.js(336 B)
?? token.js(6.79 KB)
?? uninstall.js(1.52 KB)
?? unpublish.js(4.51 KB)
?? unstar.js(182 B)
?? update.js(1.7 KB)
?? version.js(3.6 KB)
?? view.js(14.38 KB)
?? whoami.js(514 B)

Editing: install.js

/* eslint-disable camelcase */
const fs = require('fs')
const util = require('util')
const readdir = util.promisify(fs.readdir)
const reifyFinish = require('../utils/reify-finish.js')
const log = require('../utils/log-shim.js')
const { resolve, join } = require('path')
const Arborist = require('@npmcli/arborist')
const runScript = require('@npmcli/run-script')
const pacote = require('pacote')
const checks = require('npm-install-checks')

const ArboristWorkspaceCmd = require('../arborist-cmd.js')
class Install extends ArboristWorkspaceCmd {
  static description = 'Install a package'
  static name = 'install'

// These are in the order they will show up in when running "-h"
  static params = [
    'save',
    'save-exact',
    'global',
    'global-style',
    'legacy-bundling',
    'omit',
    'strict-peer-deps',
    'package-lock',
    'foreground-scripts',
    'ignore-scripts',
    'audit',
    'bin-links',
    'fund',
    'dry-run',
    ...super.params,
  ]

static usage = ['[<package-spec> ...]']

async completion (opts) {
    const { partialWord } = opts
    // install can complete to a folder with a package.json, or any package.
    // if it has a slash, then it's gotta be a folder
    // if it starts with https?://, then just give up, because it's a url
    if (/^https?:\/\//.test(partialWord)) {
      // do not complete to URLs
      return []
    }

if (/\//.test(partialWord)) {
      // Complete fully to folder if there is exactly one match and it
      // is a folder containing a package.json file.  If that is not the
      // case we return 0 matches, which will trigger the default bash
      // complete.
      const lastSlashIdx = partialWord.lastIndexOf('/')
      const partialName = partialWord.slice(lastSlashIdx + 1)
      const partialPath = partialWord.slice(0, lastSlashIdx) || '/'

const isDirMatch = async sibling => {
        if (sibling.slice(0, partialName.length) !== partialName) {
          return false
        }

try {
          const contents = await readdir(join(partialPath, sibling))
          const result = (contents.indexOf('package.json') !== -1)
          return result
        } catch (er) {
          return false
        }
      }

try {
        const siblings = await readdir(partialPath)
        const matches = []
        for (const sibling of siblings) {
          if (await isDirMatch(sibling)) {
            matches.push(sibling)
          }
        }
        if (matches.length === 1) {
          return [join(partialPath, matches[0])]
        }
        // no matches
        return []
      } catch (er) {
        return [] // invalid dir: no matching
      }
    }
    // Note: there used to be registry completion here,
    // but it stopped making sense somewhere around
    // 50,000 packages on the registry
  }

async exec (args) {
    // the /path/to/node_modules/..
    const globalTop = resolve(this.npm.globalDir, '..')
    const ignoreScripts = this.npm.config.get('ignore-scripts')
    const isGlobalInstall = this.npm.global
    const where = isGlobalInstall ? globalTop : this.npm.prefix
    const forced = this.npm.config.get('force')
    const scriptShell = this.npm.config.get('script-shell') || undefined

// be very strict about engines when trying to update npm itself
    const npmInstall = args.find(arg => arg.startsWith('npm@') || arg === 'npm')
    if (isGlobalInstall && npmInstall) {
      const npmOptions = this.npm.flatOptions
      const npmManifest = await pacote.manifest(npmInstall, npmOptions)
      try {
        checks.checkEngine(npmManifest, npmManifest.version, process.version)
      } catch (e) {
        if (forced) {
          log.warn(
            'install',
            /* eslint-disable-next-line max-len */
            `Forcing global npm install with incompatible version ${npmManifest.version} into node ${process.version}`
          )
        } else {
          throw e
        }
      }
    }

// don't try to install the prefix into itself
    args = args.filter(a => resolve(a) !== this.npm.prefix)

// `npm i -g` => "install this package globally"
    if (where === globalTop && !args.length) {
      args = ['.']
    }

// throw usage error if trying to install empty package
    // name to global space, e.g: `npm i -g ""`
    if (where === globalTop && !args.every(Boolean)) {
      throw this.usageError()
    }

const opts = {
      ...this.npm.flatOptions,
      auditLevel: null,
      path: where,
      add: args,
      workspaces: this.workspaceNames,
    }
    const arb = new Arborist(opts)
    await arb.reify(opts)

if (!args.length && !isGlobalInstall && !ignoreScripts) {
      const scripts = [
        'preinstall',
        'install',
        'postinstall',
        'prepublish', // XXX(npm9) should we remove this finally??
        'preprepare',
        'prepare',
        'postprepare',
      ]
      for (const event of scripts) {
        await runScript({
          path: where,
          args: [],
          scriptShell,
          stdio: 'inherit',
          stdioString: true,
          banner: !this.npm.silent,
          event,
        })
      }
    }
    await reifyFinish(this.npm, arb)
  }
}
module.exports = Install

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Editing: install.js

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