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unpublish.js

'use strict'

const { URL } = require('node:url')
const npa = require('npm-package-arg')
const npmFetch = require('npm-registry-fetch')
const semver = require('semver')

// given a tarball url and a registry url, returns just the
// relevant pathname portion of it, so that it can be handled
// elegantly by npm-registry-fetch which only expects pathnames
// and handles the registry hostname via opts
const getPathname = (tarball, registry) => {
  const registryUrl = new URL(registry).pathname.slice(1)
  let tarballUrl = new URL(tarball).pathname.slice(1)

// test the tarball url to see if it starts with a possible
  // pathname from the registry url, in that case strips that portion
  // of it so that we only return the post-registry-url pathname
  if (registryUrl) {
    tarballUrl = tarballUrl.slice(registryUrl.length)
  }
  return tarballUrl
}

const unpublish = async (spec, opts) => {
  spec = npa(spec)
  // spec is used to pick the appropriate registry/auth combo.
  opts = {
    force: false,
    ...opts,
    spec,
  }

try {
    const pkgUri = spec.escapedName
    const pkg = await npmFetch.json(pkgUri, {
      ...opts,
      query: { write: true },
    })

const version = spec.rawSpec
    const allVersions = pkg.versions || {}
    const versionData = allVersions[version]

const rawSpecs = (!spec.rawSpec || spec.rawSpec === '*')
    const onlyVersion = Object.keys(allVersions).length === 1
    const noVersions = !Object.keys(allVersions).length

// if missing specific version,
    // assumed unpublished
    if (!versionData && !rawSpecs && !noVersions) {
      return true
    }

// unpublish all versions of a package:
    // - no specs supplied "npm unpublish foo"
    // - all specs ("*") "npm unpublish foo@*"
    // - there was only one version
    // - has no versions field on packument
    if (rawSpecs || onlyVersion || noVersions) {
      await npmFetch(`${pkgUri}/-rev/${pkg._rev}`, {
        ...opts,
        method: 'DELETE',
        ignoreBody: true,
      })
      return true
    } else {
      const dist = allVersions[version].dist
      delete allVersions[version]

const latestVer = pkg['dist-tags'].latest

// deleting dist tags associated to version
      Object.keys(pkg['dist-tags']).forEach(tag => {
        if (pkg['dist-tags'][tag] === version) {
          delete pkg['dist-tags'][tag]
        }
      })

if (latestVer === version) {
        pkg['dist-tags'].latest = Object.keys(
          allVersions
        ).sort(semver.compareLoose).pop()
      }

delete pkg._revisions
      delete pkg._attachments

// Update packument with removed versions
      await npmFetch(`${pkgUri}/-rev/${pkg._rev}`, {
        ...opts,
        method: 'PUT',
        body: pkg,
        ignoreBody: true,
      })

// Remove the tarball itself
      const { _rev } = await npmFetch.json(pkgUri, {
        ...opts,
        query: { write: true },
      })
      const tarballUrl = getPathname(dist.tarball, opts.registry)
      await npmFetch(`${tarballUrl}/-rev/${_rev}`, {
        ...opts,
        method: 'DELETE',
        ignoreBody: true,
      })
      return true
    }
  } catch (err) {
    if (err.code !== 'E404') {
      throw err
    }

return true
  }
}

module.exports = unpublish

Name	Type	Size	Owner/Group	Permission	Last Modified	Actions
.	dir	-	root/root	drwxr-xr-x	2025-06-26 06:41:00
..	dir	-	root/root	drwxr-xr-x	2025-06-26 06:41:00
index.js	text/plain	97 B	root/root	-rw-r--r--	2025-06-06 11:48:31
provenance.js	text/plain	9.48 KB	root/root	-rw-r--r--	2025-06-06 11:48:31
publish.js	text/plain	7.05 KB	root/root	-rw-r--r--	2025-06-06 11:48:31
unpublish.js	text/plain	3.22 KB	root/root	-rw-r--r--	2025-06-06 11:48:31