NAME

       npm-cache - Manipulates packages cache

   Synopsis
         npm cache add <package-spec>
         npm cache clean [<key>]
         npm cache ls [<name>@<version>]
         npm cache verify

       Note: This command is unaware of workspaces.

   Description
       Used to add, list, or clean the npm cache folder.

       • add:  Add the specified packages to the local cache.  This command is primarily intended
         to be used internally by npm, but it can  provide  a  way  to  add  data  to  the  local
         installation cache explicitly.

       • clean:  Delete  all  data  out  of  the  cache  folder.   Note  that  this  is typically
         unnecessary, as npm's cache is self-healing and resistant to data corruption issues.

       • verify: Verify the contents of the cache folder, garbage collecting any  unneeded  data,
         and verifying the integrity of the cache index and all cached data.

   Details
       npm  stores cache data in an opaque directory within the configured cache, named _cacache.
       This directory is a cacache  http://npm.im/cacache-based  content-addressable  cache  that
       stores  all  http  request  data  as well as other package-related data. This directory is
       primarily accessed through pacote, the library responsible for all package fetching as  of
       npm@5.

       All  data  that passes through the cache is fully verified for integrity on both insertion
       and extraction. Cache corruption will either trigger an error, or signal  to  pacote  that
       the  data  must  be  refetched, which it will do automatically. For this reason, it should
       never be necessary to clear the cache for any reason other  than  reclaiming  disk  space,
       thus why clean now requires --force to run.

       There  is  currently  no  method  exposed  through  npm  to inspect or directly manage the
       contents of this cache. In order to access it, cacache must be used directly.

       npm will not remove data by itself: the cache will grow as new packages are installed.

   A note about the cache's design
       The npm cache is strictly a cache: it should not  be  relied  upon  as  a  persistent  and
       reliable  data  store  for  package  data. npm makes no guarantee that a previously-cached
       piece of data will be available later, and will automatically delete  corrupted  contents.
       The primary guarantee that the cache makes is that, if it does return data, that data will
       be exactly the data that was inserted.

       To run an offline verification of existing cache contents, use npm cache verify.

   Configuration
   cache
       • Default: Windows: %LocalAppData%\npm-cache, Posix: ~/.npm

       • Type: Path

       The location of npm's cache directory. See npm help npm cache

   See Also
       • npm help package spec

       • npm help folders

       • npm help config

       • npm help npmrc

       • npm help install

       • npm help publish

       • npm help pack

       • https://npm.im/cacache

       • https://npm.im/pacote

       • https://npm.im/@npmcli/arborist

       • https://npm.im/make-fetch-happen

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