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.TH "NPM\-CACHE" "1" "August 2018" "" ""
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.SH "NAME"
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\fBnpm-cache\fR \- Manipulates packages cache
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.SH SYNOPSIS
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.P
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.RS 2
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.nf
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npm cache add <tarball file>
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npm cache add <folder>
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npm cache add <tarball url>
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npm cache add <name>@<version>
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npm cache clean [<path>]
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aliases: npm cache clear, npm cache rm
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npm cache verify
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.fi
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.RE
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.SH DESCRIPTION
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.P
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Used to add, list, or clean the npm cache folder\.
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.RS 0
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.IP \(bu 2
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add:
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Add the specified package to the local cache\. This command is primarily
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intended to be used internally by npm, but it can provide a way to
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add data to the local installation cache explicitly\.
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.IP \(bu 2
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clean:
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Delete all data out of the cache folder\.
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.IP \(bu 2
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verify:
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Verify the contents of the cache folder, garbage collecting any unneeded data,
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and verifying the integrity of the cache index and all cached data\.
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.RE
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.SH DETAILS
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.P
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npm stores cache data in an opaque directory within the configured \fBcache\fP,
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named \fB_cacache\fP\|\. This directory is a \fBcacache\fP\-based content\-addressable cache
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that stores all http request data as well as other package\-related data\. This
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directory is primarily accessed through \fBpacote\fP, the library responsible for
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all package fetching as of npm@5\.
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.P
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All data that passes through the cache is fully verified for integrity on both
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insertion and extraction\. Cache corruption will either trigger an error, or
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signal to \fBpacote\fP that the data must be refetched, which it will do
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automatically\. For this reason, it should never be necessary to clear the cache
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for any reason other than reclaiming disk space, thus why \fBclean\fP now requires
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\fB\-\-force\fP to run\.
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.P
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There is currently no method exposed through npm to inspect or directly manage
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the contents of this cache\. In order to access it, \fBcacache\fP must be used
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directly\.
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.P
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npm will not remove data by itself: the cache will grow as new packages are
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installed\.
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.SH A NOTE ABOUT THE CACHE'S DESIGN
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.P
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The npm cache is strictly a cache: it should not be relied upon as a persistent
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and reliable data store for package data\. npm makes no guarantee that a
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previously\-cached piece of data will be available later, and will automatically
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delete corrupted contents\. The primary guarantee that the cache makes is that,
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if it does return data, that data will be exactly the data that was inserted\.
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.P
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To run an offline verification of existing cache contents, use \fBnpm cache
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verify\fP\|\.
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.SH CONFIGURATION
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.SS cache
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.P
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Default: \fB~/\.npm\fP on Posix, or \fB%AppData%/npm\-cache\fP on Windows\.
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.P
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The root cache folder\.
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.SH SEE ALSO
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.RS 0
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.IP \(bu 2
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npm help 5 folders
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.IP \(bu 2
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npm help config
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.IP \(bu 2
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npm help 7 config
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.IP \(bu 2
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npm help 5 npmrc
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.IP \(bu 2
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npm help install
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.IP \(bu 2
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npm help publish
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.IP \(bu 2
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npm help pack
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.IP \(bu 2
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https://
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.IP \(bu 2
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https://
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.RE
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