Skip to main content
Version: 2.24 (prerelease)

nodejs

The Node.js Javascript runtime (including Corepack).

Backend: pants.backend.experimental.javascript

Config section: [nodejs]

Basic options​

package_manager​

--nodejs-package-manager=<str>
PANTS_NODEJS_PACKAGE_MANAGER
pants.toml
[nodejs]
package_manager = <str>
default: npm

Default Node.js package manager to use.

You can either rely on this default together with the [nodejs].package_managers option, or specify the package.json#packageManager tool and version in the package.json of your project.

Specifying conflicting package manager versions within a multi-package workspace is an error.

package_managers​

--nodejs-package-managers="{'key1': val1, 'key2': val2, ...}"
PANTS_NODEJS_PACKAGE_MANAGERS
pants.toml
[nodejs.package_managers]
key1 = val1
key2 = val2
...
default: 
{
  "npm": "10.8.2",
  "pnpm": "9.5.0",
  "yarn": "1.22.22"
}

A mapping of package manager versions to semver releases.

Many organizations only need a single version of a package manager, which is a good default and often the simplest thing to do.

The version download is managed by Corepack. This mapping corresponds to the https://github.com/nodejs/corepack#known-good-releases setting, using the --activate flag.

Advanced options​

corepack_env_vars​

--nodejs-corepack-env-vars="[<shell_str>, <shell_str>, ...]"
PANTS_NODEJS_COREPACK_ENV_VARS
pants.toml
[nodejs]
corepack_env_vars = [
    <shell_str>,
    <shell_str>,
    ...,
]
default: []

Environment variables to set for corepack invocations.

Entries are either strings in the form ENV_VAR=value to set an explicit value; or just ENV_VAR to copy the value from Pants's own environment.

Review https://github.com/nodejs/corepack#environment-variables for available variables.

Can be overriden by fieldnodejs_corepack_env_vars on local_environment, docker_environment, or remote_environmenttargets.

executable_search_paths​

--nodejs-executable-search-paths="[<binary-paths>, <binary-paths>, ...]"
PANTS_NODEJS_EXECUTABLE_SEARCH_PATHS
pants.toml
[nodejs]
executable_search_paths = [
    <binary-paths>,
    <binary-paths>,
    ...,
]
default: 
[
  "<PATH>"
]

The PATH value that will be used to find any tools required to run nodejs processes. The special string "<PATH>" will expand to the contents of the PATH env var.

Can be overriden by fieldnodejs_executable_search_paths on local_environment, docker_environment, or remote_environmenttargets.

known_versions​

--nodejs-known-versions="['<str>', '<str>', ...]"
PANTS_NODEJS_KNOWN_VERSIONS
pants.toml
[nodejs]
known_versions = [
    '<str>',
    '<str>',
    ...,
]
default: 
[
  "v22.6.0|macos_arm64|9ea60766807cd3c3a3ad6ad419f98918d634a60fe8dea5b9c07507ed0f176d4c|47583427",
  "v22.6.0|macos_x86_64|8766c5968ca22d20fc6237c54c7c5d12ef12e15940d6119a79144ccb163ea737|49688634",
  "v22.6.0|linux_arm64|0053ee0426c4daaa65c44f2cef87be45135001c3145cfb840aa1d0e6f2619610|28097296",
  "v22.6.0|linux_x86_64|acbbe539edc33209bb3e1b25f7545b5ca5d70e6256ed8318e1ec1e41e7b35703|29240984"
]

Known versions to verify downloads against.

Each element is a pipe-separated string of version|platform|sha256|length or version|platform|sha256|length|url_override, where:

  • version is the version string
  • platform is one of [linux_arm64,linux_x86_64,macos_arm64,macos_x86_64]
  • sha256 is the 64-character hex representation of the expected sha256 digest of the download file, as emitted by shasum -a 256
  • length is the expected length of the download file in bytes, as emitted by wc -c
  • (Optional) url_override is a specific url to use instead of the normally generated url for this version

E.g., 3.1.2|macos_x86_64|6d0f18cd84b918c7b3edd0203e75569e0c7caecb1367bbbe409b44e28514f5be|42813. and 3.1.2|macos_arm64 |aca5c1da0192e2fd46b7b55ab290a92c5f07309e7b0ebf4e45ba95731ae98291|50926|https://example.mac.org/bin/v3.1.2/mac-aarch64-v3.1.2.tgz.

Values are space-stripped, so pipes can be indented for readability if necessary.

resolves​

--nodejs-resolves="{'key1': val1, 'key2': val2, ...}"
PANTS_NODEJS_RESOLVES
pants.toml
[nodejs.resolves]
key1 = val1
key2 = val2
...
default: {}

A mapping of names to lockfile paths used in your project.

Specifying a resolve name is optional. If unspecified, the default resolve name is calculated by taking the path from the source root to the directory containing the lockfile and replacing '/' with '.' in that path.

Example: An npm lockfile located at src/js/package/package-lock.json will result in a resolve named js.package, assuming src/ is a source root.

Run pants generate-lockfiles to generate the lockfile(s).

search_path​

--nodejs-search-path="[<binary-paths>, <binary-paths>, ...]"
PANTS_NODEJS_SEARCH_PATH
pants.toml
[nodejs]
search_path = [
    <binary-paths>,
    <binary-paths>,
    ...,
]
default: 
[
  "<PATH>"
]

A list of paths to search for Node.js distributions.

This option is only used if a templated url download specified via [nodejs].known_versions does not contain a version matching the configured [nodejs].version range.

You can specify absolute paths to binaries and/or to directories containing binaries. The order of entries does not matter.

The following special strings are supported:

For all runtime environment types:

  • <PATH>, the contents of the PATH env var

When the environment is a local_environment target:

  • <ASDF>, all Node.js versions currently configured by ASDF (asdf shell, ${HOME}/.tool-versions), with a fallback to all installed versions
  • <ASDF_LOCAL>, the ASDF binaries with the version in BUILD_ROOT/.tool-versions
  • <NVM>, all NodeJS versions under $NVM_DIR/versions/node
  • <NVM_LOCAL>, the nvm installation with the version in BUILD_ROOT/.nvmrc Note that the version in the .nvmrc file has to be on the form "vX.Y.Z".
Can be overriden by fieldnodejs_search_path on local_environment, docker_environment, or remote_environmenttargets.

url_platform_mapping​

--nodejs-url-platform-mapping="{'key1': val1, 'key2': val2, ...}"
PANTS_NODEJS_URL_PLATFORM_MAPPING
pants.toml
[nodejs.url_platform_mapping]
key1 = val1
key2 = val2
...
default: 
{
  "linux_arm64": "linux-arm64",
  "linux_x86_64": "linux-x64",
  "macos_arm64": "darwin-arm64",
  "macos_x86_64": "darwin-x64"
}

A dictionary mapping platforms to strings to be used when generating the URL to download the tool.

In --url-template, anytime the {platform} string is used, Pants will determine the current platform, and substitute {platform} with the respective value from your dictionary.

For example, if you define {"macos_x86_64": "apple-darwin", "linux_x86_64": "unknown-linux"}, and run Pants on Linux with an intel architecture, then {platform} will be substituted in the --url-template option with unknown-linux.

url_template​

--nodejs-url-template=<str>
PANTS_NODEJS_URL_TEMPLATE
pants.toml
[nodejs]
url_template = <str>
default: https://nodejs.org/dist/{version}/node-{version}-{platform}.tar

URL to download the tool, either as a single binary file or a compressed file (e.g. zip file). You can change this to point to your own hosted file, e.g. to work with proxies or for access via the filesystem through a file:$abspath URL (e.g. file:/this/is/absolute, possibly by templating the buildroot in a config file).

Use {version} to have the value from --version substituted, and {platform} to have a value from --url-platform-mapping substituted in, depending on the current platform. For example, https://github.com/.../protoc-&#123;version&#125;-&#123;platform&#125;.zip.

version​

--nodejs-version=<str>
PANTS_NODEJS_VERSION
pants.toml
[nodejs]
version = <str>
default: v22.6.0

Use this version of nodejs.

Deprecated options​

None

None