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545
website/node_modules/npm/man/man1/npm-install.1
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545
website/node_modules/npm/man/man1/npm-install.1
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@@ -0,0 +1,545 @@
|
||||
.TH "NPM\-INSTALL" "1" "December 2018" "" ""
|
||||
.SH "NAME"
|
||||
\fBnpm-install\fR \- Install a package
|
||||
.SH SYNOPSIS
|
||||
.P
|
||||
.RS 2
|
||||
.nf
|
||||
npm install (with no args, in package dir)
|
||||
npm install [<@scope>/]<name>
|
||||
npm install [<@scope>/]<name>@<tag>
|
||||
npm install [<@scope>/]<name>@<version>
|
||||
npm install [<@scope>/]<name>@<version range>
|
||||
npm install <git\-host>:<git\-user>/<repo\-name>
|
||||
npm install <git repo url>
|
||||
npm install <tarball file>
|
||||
npm install <tarball url>
|
||||
npm install <folder>
|
||||
|
||||
alias: npm i
|
||||
common options: [\-P|\-\-save\-prod|\-D|\-\-save\-dev|\-O|\-\-save\-optional] [\-E|\-\-save\-exact] [\-B|\-\-save\-bundle] [\-\-no\-save] [\-\-dry\-run]
|
||||
.fi
|
||||
.RE
|
||||
.SH DESCRIPTION
|
||||
.P
|
||||
This command installs a package, and any packages that it depends on\. If the
|
||||
package has a package\-lock or shrinkwrap file, the installation of dependencies
|
||||
will be driven by that, with an \fBnpm\-shrinkwrap\.json\fP taking precedence if both
|
||||
files exist\. See npm help 5 package\-lock\.json and npm help shrinkwrap\.
|
||||
.P
|
||||
A \fBpackage\fP is:
|
||||
.RS 0
|
||||
.IP \(bu 2
|
||||
a) a folder containing a program described by a npm help 5 \fBpackage\.json\fP file
|
||||
.IP \(bu 2
|
||||
b) a gzipped tarball containing (a)
|
||||
.IP \(bu 2
|
||||
c) a url that resolves to (b)
|
||||
.IP \(bu 2
|
||||
d) a \fB<name>@<version>\fP that is published on the registry (see npm help 7 \fBnpm\-registry\fP) with (c)
|
||||
.IP \(bu 2
|
||||
e) a \fB<name>@<tag>\fP (see npm help \fBnpm\-dist\-tag\fP) that points to (d)
|
||||
.IP \(bu 2
|
||||
f) a \fB<name>\fP that has a "latest" tag satisfying (e)
|
||||
.IP \(bu 2
|
||||
g) a \fB<git remote url>\fP that resolves to (a)
|
||||
|
||||
.RE
|
||||
.P
|
||||
Even if you never publish your package, you can still get a lot of
|
||||
benefits of using npm if you just want to write a node program (a), and
|
||||
perhaps if you also want to be able to easily install it elsewhere
|
||||
after packing it up into a tarball (b)\.
|
||||
.RS 0
|
||||
.IP \(bu 2
|
||||
\fBnpm install\fP (in package directory, no arguments):
|
||||
Install the dependencies in the local node_modules folder\.
|
||||
In global mode (ie, with \fB\-g\fP or \fB\-\-global\fP appended to the command),
|
||||
it installs the current package context (ie, the current working
|
||||
directory) as a global package\.
|
||||
By default, \fBnpm install\fP will install all modules listed as dependencies
|
||||
in npm help 5 \fBpackage\.json\fP\|\.
|
||||
With the \fB\-\-production\fP flag (or when the \fBNODE_ENV\fP environment variable
|
||||
is set to \fBproduction\fP), npm will not install modules listed in
|
||||
\fBdevDependencies\fP\|\.
|
||||
.QP
|
||||
NOTE: The \fB\-\-production\fP flag has no particular meaning when adding a
|
||||
dependency to a project\.
|
||||
|
||||
.
|
||||
.IP \(bu 2
|
||||
\fBnpm install <folder>\fP:
|
||||
Install the package in the directory as a symlink in the current project\.
|
||||
Its dependencies will be installed before it's linked\. If \fB<folder>\fP sits
|
||||
inside the root of your project, its dependencies may be hoisted to the
|
||||
toplevel \fBnode_modules\fP as they would for other types of dependencies\.
|
||||
.IP \(bu 2
|
||||
\fBnpm install <tarball file>\fP:
|
||||
Install a package that is sitting on the filesystem\. Note: if you just want
|
||||
to link a dev directory into your npm root, you can do this more easily by
|
||||
using \fBnpm link\fP\|\.
|
||||
Tarball requirements:
|
||||
.RS 0
|
||||
.IP \(bu 2
|
||||
The filename \fImust\fR use \fB\|\.tar\fP, \fB\|\.tar\.gz\fP, or \fB\|\.tgz\fP as
|
||||
the extension\.
|
||||
.IP \(bu 2
|
||||
The package contents should reside in a subfolder inside the tarball (usually it is called \fBpackage/\fP)\. npm strips one directory layer when installing the package (an equivalent of \fBtar x \-\-strip\-components=1\fP is run)\.
|
||||
.IP \(bu 2
|
||||
The package must contain a \fBpackage\.json\fP file with \fBname\fP and \fBversion\fP properties\.
|
||||
Example:
|
||||
.P
|
||||
.RS 2
|
||||
.nf
|
||||
npm install \./package\.tgz
|
||||
.fi
|
||||
.RE
|
||||
|
||||
.RE
|
||||
.IP \(bu 2
|
||||
\fBnpm install <tarball url>\fP:
|
||||
Fetch the tarball url, and then install it\. In order to distinguish between
|
||||
this and other options, the argument must start with "http://" or "https://"
|
||||
Example:
|
||||
.P
|
||||
.RS 2
|
||||
.nf
|
||||
npm install https://github\.com/indexzero/forever/tarball/v0\.5\.6
|
||||
.fi
|
||||
.RE
|
||||
.IP \(bu 2
|
||||
\fBnpm install [<@scope>/]<name>\fP:
|
||||
Do a \fB<name>@<tag>\fP install, where \fB<tag>\fP is the "tag" config\. (See
|
||||
npm help 7 \fBnpm\-config\fP\|\. The config's default value is \fBlatest\fP\|\.)
|
||||
In most cases, this will install the version of the modules tagged as
|
||||
\fBlatest\fP on the npm registry\.
|
||||
Example:
|
||||
.P
|
||||
.RS 2
|
||||
.nf
|
||||
npm install sax
|
||||
.fi
|
||||
.RE
|
||||
\fBnpm install\fP saves any specified packages into \fBdependencies\fP by default\.
|
||||
Additionally, you can control where and how they get saved with some
|
||||
additional flags:
|
||||
.RS 0
|
||||
.IP \(bu 2
|
||||
\fB\-P, \-\-save\-prod\fP: Package will appear in your \fBdependencies\fP\|\. This is the
|
||||
.P
|
||||
.RS 2
|
||||
.nf
|
||||
default unless `\-D` or `\-O` are present\.
|
||||
.fi
|
||||
.RE
|
||||
.IP \(bu 2
|
||||
\fB\-D, \-\-save\-dev\fP: Package will appear in your \fBdevDependencies\fP\|\.
|
||||
.IP \(bu 2
|
||||
\fB\-O, \-\-save\-optional\fP: Package will appear in your \fBoptionalDependencies\fP\|\.
|
||||
.IP \(bu 2
|
||||
\fB\-\-no\-save\fP: Prevents saving to \fBdependencies\fP\|\.
|
||||
When using any of the above options to save dependencies to your
|
||||
package\.json, there are two additional, optional flags:
|
||||
.IP \(bu 2
|
||||
\fB\-E, \-\-save\-exact\fP: Saved dependencies will be configured with an
|
||||
exact version rather than using npm's default semver range
|
||||
operator\.
|
||||
.IP \(bu 2
|
||||
\fB\-B, \-\-save\-bundle\fP: Saved dependencies will also be added to your \fBbundleDependencies\fP list\.
|
||||
Further, if you have an \fBnpm\-shrinkwrap\.json\fP or \fBpackage\-lock\.json\fP then it
|
||||
will be updated as well\.
|
||||
\fB<scope>\fP is optional\. The package will be downloaded from the registry
|
||||
associated with the specified scope\. If no registry is associated with
|
||||
the given scope the default registry is assumed\. See npm help 7 \fBnpm\-scope\fP\|\.
|
||||
Note: if you do not include the @\-symbol on your scope name, npm will
|
||||
interpret this as a GitHub repository instead, see below\. Scopes names
|
||||
must also be followed by a slash\.
|
||||
Examples:
|
||||
.P
|
||||
.RS 2
|
||||
.nf
|
||||
npm install sax
|
||||
npm install githubname/reponame
|
||||
npm install @myorg/privatepackage
|
||||
npm install node\-tap \-\-save\-dev
|
||||
npm install dtrace\-provider \-\-save\-optional
|
||||
npm install readable\-stream \-\-save\-exact
|
||||
npm install ansi\-regex \-\-save\-bundle
|
||||
.fi
|
||||
.RE
|
||||
|
||||
.RE
|
||||
|
||||
.RE
|
||||
.P
|
||||
.RS 2
|
||||
.nf
|
||||
**Note**: If there is a file or folder named `<name>` in the current
|
||||
working directory, then it will try to install that, and only try to
|
||||
fetch the package by name if it is not valid\.
|
||||
.fi
|
||||
.RE
|
||||
.RS 0
|
||||
.IP \(bu 2
|
||||
\fBnpm install [<@scope>/]<name>@<tag>\fP:
|
||||
Install the version of the package that is referenced by the specified tag\.
|
||||
If the tag does not exist in the registry data for that package, then this
|
||||
will fail\.
|
||||
Example:
|
||||
.P
|
||||
.RS 2
|
||||
.nf
|
||||
npm install sax@latest
|
||||
npm install @myorg/mypackage@latest
|
||||
.fi
|
||||
.RE
|
||||
.IP \(bu 2
|
||||
\fBnpm install [<@scope>/]<name>@<version>\fP:
|
||||
Install the specified version of the package\. This will fail if the
|
||||
version has not been published to the registry\.
|
||||
Example:
|
||||
.P
|
||||
.RS 2
|
||||
.nf
|
||||
npm install sax@0\.1\.1
|
||||
npm install @myorg/privatepackage@1\.5\.0
|
||||
.fi
|
||||
.RE
|
||||
.IP \(bu 2
|
||||
\fBnpm install [<@scope>/]<name>@<version range>\fP:
|
||||
Install a version of the package matching the specified version range\. This
|
||||
will follow the same rules for resolving dependencies described in npm help 5 \fBpackage\.json\fP\|\.
|
||||
Note that most version ranges must be put in quotes so that your shell will
|
||||
treat it as a single argument\.
|
||||
Example:
|
||||
.P
|
||||
.RS 2
|
||||
.nf
|
||||
npm install sax@">=0\.1\.0 <0\.2\.0"
|
||||
npm install @myorg/privatepackage@">=0\.1\.0 <0\.2\.0"
|
||||
.fi
|
||||
.RE
|
||||
.IP \(bu 2
|
||||
\fBnpm install <git remote url>\fP:
|
||||
Installs the package from the hosted git provider, cloning it with \fBgit\fP\|\.
|
||||
For a full git remote url, only that URL will be attempted\.
|
||||
.P
|
||||
.RS 2
|
||||
.nf
|
||||
<protocol>://[<user>[:<password>]@]<hostname>[:<port>][:][/]<path>[#<commit\-ish> | #semver:<semver>]
|
||||
.fi
|
||||
.RE
|
||||
\fB<protocol>\fP is one of \fBgit\fP, \fBgit+ssh\fP, \fBgit+http\fP, \fBgit+https\fP, or
|
||||
\fBgit+file\fP\|\.
|
||||
If \fB#<commit\-ish>\fP is provided, it will be used to clone exactly that
|
||||
commit\. If the commit\-ish has the format \fB#semver:<semver>\fP, \fB<semver>\fP can
|
||||
be any valid semver range or exact version, and npm will look for any tags
|
||||
or refs matching that range in the remote repository, much as it would for a
|
||||
registry dependency\. If neither \fB#<commit\-ish>\fP or \fB#semver:<semver>\fP is
|
||||
specified, then the default branch of the repository is used\.
|
||||
If the repository makes use of submodules, those submodules will be cloned
|
||||
as well\.
|
||||
If the package being installed contains a \fBprepare\fP script, its
|
||||
\fBdependencies\fP and \fBdevDependencies\fP will be installed, and the prepare
|
||||
script will be run, before the package is packaged and installed\.
|
||||
The following git environment variables are recognized by npm and will be
|
||||
added to the environment when running git:
|
||||
.RS 0
|
||||
.IP \(bu 2
|
||||
\fBGIT_ASKPASS\fP
|
||||
.IP \(bu 2
|
||||
\fBGIT_EXEC_PATH\fP
|
||||
.IP \(bu 2
|
||||
\fBGIT_PROXY_COMMAND\fP
|
||||
.IP \(bu 2
|
||||
\fBGIT_SSH\fP
|
||||
.IP \(bu 2
|
||||
\fBGIT_SSH_COMMAND\fP
|
||||
.IP \(bu 2
|
||||
\fBGIT_SSL_CAINFO\fP
|
||||
.IP \(bu 2
|
||||
\fBGIT_SSL_NO_VERIFY\fP
|
||||
See the git man page for details\.
|
||||
Examples:
|
||||
.P
|
||||
.RS 2
|
||||
.nf
|
||||
npm install git+ssh://git@github\.com:npm/cli\.git#v1\.0\.27
|
||||
npm install git+ssh://git@github\.com:npm/cli#semver:^5\.0
|
||||
npm install git+https://isaacs@github\.com/npm/cli\.git
|
||||
npm install git://github\.com/npm/cli\.git#v1\.0\.27
|
||||
GIT_SSH_COMMAND='ssh \-i ~/\.ssh/custom_ident' npm install git+ssh://git@github\.com:npm/cli\.git
|
||||
.fi
|
||||
.RE
|
||||
|
||||
.RE
|
||||
.IP \(bu 2
|
||||
\fBnpm install <githubname>/<githubrepo>[#<commit\-ish>]\fP:
|
||||
.IP \(bu 2
|
||||
\fBnpm install github:<githubname>/<githubrepo>[#<commit\-ish>]\fP:
|
||||
Install the package at \fBhttps://github\.com/githubname/githubrepo\fP by
|
||||
attempting to clone it using \fBgit\fP\|\.
|
||||
If \fB#<commit\-ish>\fP is provided, it will be used to clone exactly that
|
||||
commit\. If the commit\-ish has the format \fB#semver:<semver>\fP, \fB<semver>\fP can
|
||||
be any valid semver range or exact version, and npm will look for any tags
|
||||
or refs matching that range in the remote repository, much as it would for a
|
||||
registry dependency\. If neither \fB#<commit\-ish>\fP or \fB#semver:<semver>\fP is
|
||||
specified, then \fBmaster\fP is used\.
|
||||
As with regular git dependencies, \fBdependencies\fP and \fBdevDependencies\fP will
|
||||
be installed if the package has a \fBprepare\fP script, before the package is
|
||||
done installing\.
|
||||
Examples:
|
||||
.P
|
||||
.RS 2
|
||||
.nf
|
||||
npm install mygithubuser/myproject
|
||||
npm install github:mygithubuser/myproject
|
||||
.fi
|
||||
.RE
|
||||
.IP \(bu 2
|
||||
\fBnpm install gist:[<githubname>/]<gistID>[#<commit\-ish>|#semver:<semver>]\fP:
|
||||
Install the package at \fBhttps://gist\.github\.com/gistID\fP by attempting to
|
||||
clone it using \fBgit\fP\|\. The GitHub username associated with the gist is
|
||||
optional and will not be saved in \fBpackage\.json\fP\|\.
|
||||
As with regular git dependencies, \fBdependencies\fP and \fBdevDependencies\fP will
|
||||
be installed if the package has a \fBprepare\fP script, before the package is
|
||||
done installing\.
|
||||
Example:
|
||||
.P
|
||||
.RS 2
|
||||
.nf
|
||||
npm install gist:101a11beef
|
||||
.fi
|
||||
.RE
|
||||
.IP \(bu 2
|
||||
\fBnpm install bitbucket:<bitbucketname>/<bitbucketrepo>[#<commit\-ish>]\fP:
|
||||
Install the package at \fBhttps://bitbucket\.org/bitbucketname/bitbucketrepo\fP
|
||||
by attempting to clone it using \fBgit\fP\|\.
|
||||
If \fB#<commit\-ish>\fP is provided, it will be used to clone exactly that
|
||||
commit\. If the commit\-ish has the format \fB#semver:<semver>\fP, \fB<semver>\fP can
|
||||
be any valid semver range or exact version, and npm will look for any tags
|
||||
or refs matching that range in the remote repository, much as it would for a
|
||||
registry dependency\. If neither \fB#<commit\-ish>\fP or \fB#semver:<semver>\fP is
|
||||
specified, then \fBmaster\fP is used\.
|
||||
As with regular git dependencies, \fBdependencies\fP and \fBdevDependencies\fP will
|
||||
be installed if the package has a \fBprepare\fP script, before the package is
|
||||
done installing\.
|
||||
Example:
|
||||
.P
|
||||
.RS 2
|
||||
.nf
|
||||
npm install bitbucket:mybitbucketuser/myproject
|
||||
.fi
|
||||
.RE
|
||||
.IP \(bu 2
|
||||
\fBnpm install gitlab:<gitlabname>/<gitlabrepo>[#<commit\-ish>]\fP:
|
||||
Install the package at \fBhttps://gitlab\.com/gitlabname/gitlabrepo\fP
|
||||
by attempting to clone it using \fBgit\fP\|\.
|
||||
If \fB#<commit\-ish>\fP is provided, it will be used to clone exactly that
|
||||
commit\. If the commit\-ish has the format \fB#semver:<semver>\fP, \fB<semver>\fP can
|
||||
be any valid semver range or exact version, and npm will look for any tags
|
||||
or refs matching that range in the remote repository, much as it would for a
|
||||
registry dependency\. If neither \fB#<commit\-ish>\fP or \fB#semver:<semver>\fP is
|
||||
specified, then \fBmaster\fP is used\.
|
||||
As with regular git dependencies, \fBdependencies\fP and \fBdevDependencies\fP will
|
||||
be installed if the package has a \fBprepare\fP script, before the package is
|
||||
done installing\.
|
||||
Example:
|
||||
.P
|
||||
.RS 2
|
||||
.nf
|
||||
npm install gitlab:mygitlabuser/myproject
|
||||
npm install gitlab:myusr/myproj#semver:^5\.0
|
||||
.fi
|
||||
.RE
|
||||
|
||||
.RE
|
||||
.P
|
||||
You may combine multiple arguments, and even multiple types of arguments\.
|
||||
For example:
|
||||
.P
|
||||
.RS 2
|
||||
.nf
|
||||
npm install sax@">=0\.1\.0 <0\.2\.0" bench supervisor
|
||||
.fi
|
||||
.RE
|
||||
.P
|
||||
The \fB\-\-tag\fP argument will apply to all of the specified install targets\. If a
|
||||
tag with the given name exists, the tagged version is preferred over newer
|
||||
versions\.
|
||||
.P
|
||||
The \fB\-\-dry\-run\fP argument will report in the usual way what the install would
|
||||
have done without actually installing anything\.
|
||||
.P
|
||||
The \fB\-\-package\-lock\-only\fP argument will only update the \fBpackage\-lock\.json\fP,
|
||||
instead of checking \fBnode_modules\fP and downloading dependencies\.
|
||||
.P
|
||||
The \fB\-f\fP or \fB\-\-force\fP argument will force npm to fetch remote resources even if a
|
||||
local copy exists on disk\.
|
||||
.P
|
||||
.RS 2
|
||||
.nf
|
||||
npm install sax \-\-force
|
||||
.fi
|
||||
.RE
|
||||
.P
|
||||
The \fB\-g\fP or \fB\-\-global\fP argument will cause npm to install the package globally
|
||||
rather than locally\. See npm help 5 \fBnpm\-folders\fP\|\.
|
||||
.P
|
||||
The \fB\-\-global\-style\fP argument will cause npm to install the package into
|
||||
your local \fBnode_modules\fP folder with the same layout it uses with the
|
||||
global \fBnode_modules\fP folder\. Only your direct dependencies will show in
|
||||
\fBnode_modules\fP and everything they depend on will be flattened in their
|
||||
\fBnode_modules\fP folders\. This obviously will eliminate some deduping\.
|
||||
.P
|
||||
The \fB\-\-ignore\-scripts\fP argument will cause npm to not execute any
|
||||
scripts defined in the package\.json\. See npm help 7 \fBnpm\-scripts\fP\|\.
|
||||
.P
|
||||
The \fB\-\-legacy\-bundling\fP argument will cause npm to install the package such
|
||||
that versions of npm prior to 1\.4, such as the one included with node 0\.8,
|
||||
can install the package\. This eliminates all automatic deduping\.
|
||||
.P
|
||||
The \fB\-\-link\fP argument will cause npm to link global installs into the
|
||||
local space in some cases\.
|
||||
.P
|
||||
The \fB\-\-no\-bin\-links\fP argument will prevent npm from creating symlinks for
|
||||
any binaries the package might contain\.
|
||||
.P
|
||||
The \fB\-\-no\-optional\fP argument will prevent optional dependencies from
|
||||
being installed\.
|
||||
.P
|
||||
The \fB\-\-no\-shrinkwrap\fP argument, which will ignore an available
|
||||
package lock or shrinkwrap file and use the package\.json instead\.
|
||||
.P
|
||||
The \fB\-\-no\-package\-lock\fP argument will prevent npm from creating a
|
||||
\fBpackage\-lock\.json\fP file\. When running with package\-lock's disabled npm
|
||||
will not automatically prune your node modules when installing\.
|
||||
.P
|
||||
The \fB\-\-nodedir=/path/to/node/source\fP argument will allow npm to find the
|
||||
node source code so that npm can compile native modules\.
|
||||
.P
|
||||
The \fB\-\-only={prod[uction]|dev[elopment]}\fP argument will cause either only
|
||||
\fBdevDependencies\fP or only non\-\fBdevDependencies\fP to be installed regardless of the \fBNODE_ENV\fP\|\.
|
||||
.P
|
||||
The \fB\-\-no\-audit\fP argument can be used to disable sending of audit reports to
|
||||
the configured registries\. See npm help \fBnpm\-audit\fP for details on what is sent\.
|
||||
.P
|
||||
See npm help 7 \fBnpm\-config\fP\|\. Many of the configuration params have some
|
||||
effect on installation, since that's most of what npm does\.
|
||||
.SH ALGORITHM
|
||||
.P
|
||||
To install a package, npm uses the following algorithm:
|
||||
.P
|
||||
.RS 2
|
||||
.nf
|
||||
load the existing node_modules tree from disk
|
||||
clone the tree
|
||||
fetch the package\.json and assorted metadata and add it to the clone
|
||||
walk the clone and add any missing dependencies
|
||||
dependencies will be added as close to the top as is possible
|
||||
without breaking any other modules
|
||||
compare the original tree with the cloned tree and make a list of
|
||||
actions to take to convert one to the other
|
||||
execute all of the actions, deepest first
|
||||
kinds of actions are install, update, remove and move
|
||||
.fi
|
||||
.RE
|
||||
.P
|
||||
For this \fBpackage{dep}\fP structure: \fBA{B,C}, B{C}, C{D}\fP,
|
||||
this algorithm produces:
|
||||
.P
|
||||
.RS 2
|
||||
.nf
|
||||
A
|
||||
+\-\- B
|
||||
+\-\- C
|
||||
+\-\- D
|
||||
.fi
|
||||
.RE
|
||||
.P
|
||||
That is, the dependency from B to C is satisfied by the fact that A
|
||||
already caused C to be installed at a higher level\. D is still installed
|
||||
at the top level because nothing conflicts with it\.
|
||||
.P
|
||||
For \fBA{B,C}, B{C,D@1}, C{D@2}\fP, this algorithm produces:
|
||||
.P
|
||||
.RS 2
|
||||
.nf
|
||||
A
|
||||
+\-\- B
|
||||
+\-\- C
|
||||
`\-\- D@2
|
||||
+\-\- D@1
|
||||
.fi
|
||||
.RE
|
||||
.P
|
||||
Because B's D@1 will be installed in the top level, C now has to install D@2
|
||||
privately for itself\. This algorithm is deterministic, but different trees may
|
||||
be produced if two dependencies are requested for installation in a different
|
||||
order\.
|
||||
.P
|
||||
See npm help 5 folders for a more detailed description of the specific
|
||||
folder structures that npm creates\.
|
||||
.SS Limitations of npm's Install Algorithm
|
||||
.P
|
||||
npm will refuse to install any package with an identical name to the
|
||||
current package\. This can be overridden with the \fB\-\-force\fP flag, but in
|
||||
most cases can simply be addressed by changing the local package name\.
|
||||
.P
|
||||
There are some very rare and pathological edge\-cases where a cycle can
|
||||
cause npm to try to install a never\-ending tree of packages\. Here is
|
||||
the simplest case:
|
||||
.P
|
||||
.RS 2
|
||||
.nf
|
||||
A \-> B \-> A' \-> B' \-> A \-> B \-> A' \-> B' \-> A \-> \.\.\.
|
||||
.fi
|
||||
.RE
|
||||
.P
|
||||
where \fBA\fP is some version of a package, and \fBA'\fP is a different version
|
||||
of the same package\. Because \fBB\fP depends on a different version of \fBA\fP
|
||||
than the one that is already in the tree, it must install a separate
|
||||
copy\. The same is true of \fBA'\fP, which must install \fBB'\fP\|\. Because \fBB'\fP
|
||||
depends on the original version of \fBA\fP, which has been overridden, the
|
||||
cycle falls into infinite regress\.
|
||||
.P
|
||||
To avoid this situation, npm flat\-out refuses to install any
|
||||
\fBname@version\fP that is already present anywhere in the tree of package
|
||||
folder ancestors\. A more correct, but more complex, solution would be
|
||||
to symlink the existing version into the new location\. If this ever
|
||||
affects a real use\-case, it will be investigated\.
|
||||
.SH SEE ALSO
|
||||
.RS 0
|
||||
.IP \(bu 2
|
||||
npm help 5 folders
|
||||
.IP \(bu 2
|
||||
npm help update
|
||||
.IP \(bu 2
|
||||
npm help audit
|
||||
.IP \(bu 2
|
||||
npm help link
|
||||
.IP \(bu 2
|
||||
npm help rebuild
|
||||
.IP \(bu 2
|
||||
npm help 7 scripts
|
||||
.IP \(bu 2
|
||||
npm help build
|
||||
.IP \(bu 2
|
||||
npm help config
|
||||
.IP \(bu 2
|
||||
npm help 7 config
|
||||
.IP \(bu 2
|
||||
npm help 5 npmrc
|
||||
.IP \(bu 2
|
||||
npm help 7 registry
|
||||
.IP \(bu 2
|
||||
npm help dist\-tag
|
||||
.IP \(bu 2
|
||||
npm help uninstall
|
||||
.IP \(bu 2
|
||||
npm help shrinkwrap
|
||||
.IP \(bu 2
|
||||
npm help 5 package\.json
|
||||
|
||||
.RE
|
||||
|
||||
Reference in New Issue
Block a user