Fast, fault-tolerant, cross-platform, disk-based, data-agnostic, content-addressable cache. 

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const contentPath = require('./content/path')

const fixOwner = require('./util/fix-owner')

const glob = util.promisify(require('glob'))

const rimraf = util.promisify(require('rimraf'))

const globify = pattern => pattern.split('\\').join('/')

  Object.prototype.hasOwnProperty.call(obj, key)

const truncate = util.promisify(fs.truncate)

const writeFile = util.promisify(fs.writeFile)

const readFile = util.promisify(fs.readFile)

  opts.log.silly('verify', 'verifying cache at', cache)

        return step(cache, opts).then((s) => {

            Object.keys(s).forEach((k) => {

          stats.runTime[label] = end - start

      stats.runTime.total = stats.endTime - stats.startTime

  return Promise.resolve({ startTime: new Date() })

  return Promise.resolve({ endTime: new Date() })

  opts.log.silly('verify', 'fixing cache permissions')

      return fixOwner.chownr(cache, cache)

// Implements a naive mark-and-sweep tracing garbage collector.

// The algorithm is basically as follows:

// 1. Read (and filter) all index entries ("pointers")

// 2. Mark each integrity value as "live"

// 3. Read entire filesystem tree in `content-vX/` dir

// 4. If content is live, verify its checksum and delete it if it fails

// 5. If content is not marked as live, rimraf it.

  opts.log.silly('verify', 'garbage collecting content')

  const indexStream = index.lsStream(cache)

    if (opts.filter && !opts.filter(entry)) {

    liveContent.add(entry.integrity.toString())

    const contentDir = contentPath.contentDir(cache)

    return glob(path.join(contentDir, '**'), {

    return glob(globify(path.join(contentDir, '**')), {

            const split = f.split(/[/\\]/)

            const digest = split.slice(split.length - 3).join('')

            const algo = split[split.length - 4]

            const integrity = ssri.fromHex(digest, algo)

            if (liveContent.has(integrity.toString())) {

              return verifyContent(f, integrity).then((info) => {

                  stats.badContentCount++

                  stats.reclaimedSize += info.size

                  stats.verifiedContent++

                  stats.keptSize += info.size

              // No entries refer to this content. We can delete.

              return stat(f).then((s) => {

                return rimraf(f).then(() => {

                  stats.reclaimedSize += s.size

          { concurrency: opts.concurrency }

        .checkStream(new fsm.ReadStream(filepath), sri)

          if (err.code !== 'EINTEGRITY') {

          return rimraf(filepath).then(() => {

  opts.log.silly('verify', 'rebuilding index')

  return index.ls(cache).then((entries) => {

        const excluded = opts.filter && !opts.filter(entry)

        excluded && stats.rejectedEntries++

        if (buckets[hashed] && !excluded) {

        } else if (buckets[hashed] && excluded) {

          buckets[hashed]._path = index.bucketPath(cache, k)

  "description": "Fast, fault-tolerant, cross-platform, disk-based, data-agnostic, content-addressable cache.",

    "benchmarks": "node test/benchmarks",

    "prepublishOnly": "git push origin --follow-tags",

    "test-docker": "docker run -it --rm --name pacotest -v \"$PWD\":/tmp -w /tmp node:latest npm test",

    "template-oss-apply": "template-oss-apply --force"

    "url": "https://github.com/npm/cacache.git"

    "node": "^12.13.0 || ^14.15.0 || >=16.0.0"

    "//@npmcli/template-oss": "This file is partially managed by @npmcli/template-oss. Edits may be overwritten.",

		@@ -16,2 +16,4 @@ 'use strict'

		const globify = pattern => pattern.split('\\').join('/')

		const hasOwnProperty = (obj, key) =>
		@@ -123,3 +125,3 @@ Object.prototype.hasOwnProperty.call(obj, key)
		const contentDir = contentPath.contentDir(cache)
		return glob(path.join(contentDir, '**'), {
		return glob(globify(path.join(contentDir, '**')), {
		follow: false,
		@@ -126,0 +128,0 @@ nodir: true,

		{
		"name": "cacache",
		"version": "16.0.5",
		"version": "16.0.6",
		"cache-version": {
		@@ -5,0 +5,0 @@ "content": "2",

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