Corepack is a tool that helps manage package managers in Node.js projects. It allows you to specify and use different versions of package managers like Yarn and pnpm, ensuring consistency across different environments.
Enable Corepack
This command enables Corepack, allowing you to use it to manage package managers in your project.
corepack enableDisable Corepack
This command disables Corepack, preventing it from managing package managers in your project.
corepack disableInstall a specific package manager version
This command installs and activates a specific version of a package manager (in this case, Yarn).
corepack prepare yarn@1.22.10 --activateCheck Corepack version
This command displays the current version of Corepack installed on your system.
corepack --versionNode Version Manager (nvm) is a tool that allows you to manage multiple Node.js versions on a single machine. Unlike Corepack, which focuses on package managers, nvm focuses on managing Node.js versions.
Volta is a JavaScript tool manager that allows you to manage Node.js versions and package managers. It provides a similar functionality to Corepack but also includes features for managing Node.js versions.
asdf is a version manager that can manage multiple runtime versions, including Node.js, Python, Ruby, and more. It is more versatile than Corepack, which is specifically focused on package managers.
corepackCorepack is a zero-runtime-dependency Node.js script that acts as a bridge between Node.js projects and the package managers they are intended to be used with during development. In practical terms, Corepack lets you use Yarn, npm, and pnpm without having to install them.
Corepack is distributed by default with all recent Node.js versions.
Run corepack enable to install the required Yarn and pnpm binaries on your path.
First uninstall your global Yarn and pnpm binaries (just leave npm). In general, you'd do this by running the following command:
npm uninstall -g yarn pnpm
# That should be enough, but if you installed Yarn without going through npm it might
# be more tedious - for example, you might need to run `brew uninstall yarn` as well.
Then install Corepack:
npm install -g corepack
We do acknowledge the irony and overhead of using npm to install Corepack, which is at least part of why the preferred option is to use the Corepack version that is distributed along with Node.js itself.
See CONTRIBUTING.md.
Just use your package managers as you usually would. Run yarn install in Yarn
projects, pnpm install in pnpm projects, and npm in npm projects. Corepack
will catch these calls, and depending on the situation:
If the local project is configured for the package manager you're using, Corepack will download and cache the latest compatible version.
If the local project is configured for a different package manager, Corepack will request you to run the command again using the right package manager - thus avoiding corruptions of your install artifacts.
If the local project isn't configured for any package manager, Corepack will assume that you know what you're doing, and will use whatever package manager version has been pinned as "known good release". Check the relevant section for more details.
Set your package's manager with the packageManager field in package.json:
{
"packageManager": "yarn@3.2.3+sha224.953c8233f7a92884eee2de69a1b92d1f2ec1655e66d08071ba9a02fa"
}
Here, yarn is the name of the package manager, specified at version 3.2.3,
along with the SHA-224 hash of this version for validation.
packageManager@x.y.z is required. The hash is optional but strongly
recommended as a security practice. Permitted values for the package manager are
yarn, npm, and pnpm.
You can also provide a URL to a .js file (which will be interpreted as a
CommonJS module) or a .tgz file (which will be interpreted as a package, and
the "bin" field of the package.json will be used to determine which file to
use in the archive).
{
"packageManager": "yarn@https://registry.npmjs.org/@yarnpkg/cli-dist/-/cli-dist-3.2.3.tgz#sha224.16a0797d1710d1fb7ec40ab5c3801b68370a612a9b66ba117ad9924b"
}
When running Corepack within projects that don't list a supported package manager, it will default to a set of Known Good Releases.
If there is no Known Good Release for the requested package manager, Corepack looks up the npm registry for the latest available version and cache it for future use.
The Known Good Releases can be updated system-wide using corepack install -g.
When Corepack downloads a new version of a given package manager on the same
major line as the Known Good Release, it auto-updates it by default.
The utility commands detailed in the next section.
Either you can use the network while building your container image, in which
case you'll simply run corepack pack to make sure that your image
includes the Last Known Good release for the specified package manager.
Or you're publishing your project to a system where the network is
unavailable, in which case you'll preemptively generate a package manager
archive from your local computer (using corepack pack -o) before storing
it somewhere your container will be able to access (for example within your
repository). After that it'll just be a matter of running
corepack install -g --cache-only <path/to/corepack.tgz> to setup the cache.
corepack <binary name>[@<version>] [... args]This meta-command runs the specified package manager in the local folder. You can use it to force an install to run with a given version, which can be useful when looking for regressions.
Note that those commands still check whether the local project is configured for
the given package manager (ie you won't be able to run corepack yarn install
on a project where the packageManager field references pnpm).
corepack cache cleanClears the local COREPACK_HOME cache directory.
corepack cache clearClears the local COREPACK_HOME cache directory.
corepack enable [... name]| Option | Description |
|---|---|
--install-directory | Add the shims to the specified location |
This command will detect where Corepack is installed and will create shims next to it for each of the specified package managers (or all of them if the command is called without parameters). Note that the npm shims will not be installed unless explicitly requested, as npm is currently distributed with Node.js through other means.
If the file system where the corepack binary is located is read-only, this
command will fail. A workaround is to add the binaries as alias in your
shell configuration file (e.g. in ~/.bash_aliases):
alias yarn="corepack yarn"
alias yarnpkg="corepack yarnpkg"
alias pnpm="corepack pnpm"
alias pnpx="corepack pnpx"
alias npm="corepack npm"
alias npx="corepack npx"
On Windows PowerShell, you can add functions using the $PROFILE automatic
variable:
echo "function yarn { corepack yarn `$args }" >> $PROFILE
echo "function yarnpkg { corepack yarnpkg `$args }" >> $PROFILE
echo "function pnpm { corepack pnpm `$args }" >> $PROFILE
echo "function pnpx { corepack pnpx `$args }" >> $PROFILE
echo "function npm { corepack npm `$args }" >> $PROFILE
echo "function npx { corepack npx `$args }" >> $PROFILE
corepack disable [... name]| Option | Description |
|---|---|
--install-directory | Remove the shims to the specified location |
This command will detect where Node.js is installed and will remove the shims from there.
corepack installDownload and install the package manager configured in the local project. This command doesn't change the global version used when running the package manager from outside the project (use the `-g,--global` flag if you wish to do this).
corepack install <-g,--global> [... name[@<version>]]Install the selected package managers and install them on the system.
Package managers thus installed will be configured as the new default when
calling their respective binaries outside of projects defining the
packageManager field.
corepack pack [... name[@<version>]]| Option | Description |
|---|---|
--json | Print the output folder rather than logs |
-o,--output | Path where to generate the archive |
Download the selected package managers and store them inside a tarball
suitable for use with corepack install -g.
corepack use <name[@<version>]>When run, this command will retrieve the latest release matching the provided descriptor, assign it to the project's package.json file, and automatically perform an install.
corepack upRetrieve the latest available version for the current major release line of the package manager used in the local project, and update the project to use it.
Unlike corepack use this command doesn't take a package manager name nor a
version range, as it will always select the latest available version from the
same major line. Should you need to upgrade to a new major, use an explicit
corepack use {name}@latest call (or simply corepack use {name}).
COREPACK_DEFAULT_TO_LATEST can be set to 0 in order to instruct Corepack
not to lookup on the remote registry for the latest version of the selected
package manager, and to not update the Last Known Good version when it
downloads a new version of the same major line.
COREPACK_ENABLE_AUTO_PIN can be set to 0 to prevent Corepack from
updating the packageManager field when it detects that the local package
doesn't list it. In general we recommend to always list a packageManager
field (which you can easily set through corepack use [name]@[version]), as
it ensures that your project installs are always deterministic.
COREPACK_ENABLE_DOWNLOAD_PROMPT can be set to 0 to
prevent Corepack showing the URL when it needs to download software, or can be
set to 1 to have the URL shown. By default, when Corepack is called
explicitly (e.g. corepack pnpm …), it is set to 0; when Corepack is called
implicitly (e.g. pnpm …), it is set to 1.
When standard input is a TTY and no CI environment is detected, Corepack will
ask for user input before starting the download.
COREPACK_ENABLE_UNSAFE_CUSTOM_URLS can be set to 1 to allow use of
custom URLs to load a package manager known by Corepack (yarn, npm, and
pnpm).
COREPACK_ENABLE_NETWORK can be set to 0 to prevent Corepack from accessing
the network (in which case you'll be responsible for hydrating the package
manager versions that will be required for the projects you'll run, using
corepack install -g --cache-only).
COREPACK_ENABLE_STRICT can be set to 0 to prevent Corepack from throwing
error if the package manager does not correspond to the one defined for the
current project. This means that if a user is using the package manager
specified in the current project, it will use the version specified by the
project's packageManager field. But if the user is using other package
manager different from the one specified for the current project, it will use
the system-wide package manager version.
COREPACK_ENABLE_PROJECT_SPEC can be set to 0 to prevent Corepack from
checking if the package manager corresponds to the one defined for the current
project. This means that it will always use the system-wide package manager
regardless of what is being specified in the project's packageManager field.
COREPACK_HOME can be set in order to define where Corepack should install
the package managers. By default it is set to %LOCALAPPDATA%\node\corepack
on Windows, and to $HOME/.cache/node/corepack everywhere else.
COREPACK_ROOT has no functional impact on Corepack itself; it's
automatically being set in your environment by Corepack when it shells out to
the underlying package managers, so that they can feature-detect its presence
(useful for commands like yarn init).
COREPACK_NPM_REGISTRY sets the registry base url used when retrieving
package managers from npm. Default value is https://registry.npmjs.org
COREPACK_NPM_TOKEN sets a Bearer token authorization header when connecting
to a npm type registry.
COREPACK_NPM_USERNAME and COREPACK_NPM_PASSWORD to set a Basic
authorization header when connecting to a npm type registry. Note that both
environment variables are required and as plain text. If you want to send an
empty password, explicitly set COREPACK_NPM_PASSWORD to an empty string.
HTTP_PROXY, HTTPS_PROXY, and NO_PROXY are supported through
node-proxy-agent.
COREPACK_INTEGRITY_KEYS can be set to an empty string or 0 to
instruct Corepack to skip integrity checks, or to a JSON string containing
custom keys.
There are a wide variety of networking issues that can occur while running
corepack commands. Things to check:
curl [URL] (ipv4) and curl -6 [URL] (ipv6) from your shell.See CONTRIBUTING.md.
See LICENSE.md.
FAQs
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The npm package corepack receives a total of 176,315 weekly downloads. As such, corepack popularity was classified as popular.
We found that corepack demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 0 open source maintainers collaborating on the project.
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