Get the preferred Node.js version of a user or project.
This looks for (from highest to lowest priority):
nvm
aliases (like current
or lts/erbium
) and version ranges (like 12
or
>=12
) are resolved to regular "major.minor.patch"
version strings.
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Examples
import preferredNodeVersion from 'preferred-node-version'
const { version } = await preferredNodeVersion()
console.log(version)
await preferredNodeVersion({ global: true })
await preferredNodeVersion({ cwd: '/path/to/cwd' })
await preferredNodeVersion({
files: ['/path/to/.nvmrc', '/path/to/package.json'],
})
Install
npm install preferred-node-version
This package works in Node.js >=18.18.0.
This is an ES module. It must be loaded using
an import
or import()
statement,
not require()
. If TypeScript is used, it must be configured to
output ES modules,
not CommonJS.
Usage
preferredNodeVersion(options?)
options
: object?
Returns: Promise<object>
Return value
The returned promise resolves to an object with the following properties. An
empty object is returned if no preferred Node.js version was found.
If a file cannot be read or if it contains an invalid version, the promise is
rejected with an error.
version
Type: string
Full Node.js version. For example 12.16.2
rawVersion
Type: string
Node.js version as specified in the Node.js version file. This might include
aliases or version ranges. For example latest
, lts/erbium
, 12
or
12.16.2
.
filePath
Type: string?
Absolute path to the Node.js version file. Either filePath
or envVariable
is
defined.
envVariable
Type: string?
Name of the environment variable containing the version. For example
NODE_VERSION
. Either filePath
or envVariable
is defined.
options
cwd
Type: string | URL
Default: process.cwd()
Start looking for a Node.js version file from this directory.
global
Type: boolean
Default: false
If true
, find the global Node.js version instead:
- use only the home directory and environment variables
- ignore the current directory and parent directories
files
Type: string[]
Default: []
Additional files to lookup. Their filenames must be one of package.json
,
.nvmrc
, etc.
mirror
Type: string
Default: https://nodejs.org/dist
Base URL to fetch the list of available Node.js versions. Can be customized (for
example https://npmmirror.com/mirrors/node
).
The following environment variables can also be used: NODE_MIRROR
,
NVM_NODEJS_ORG_MIRROR
, N_NODE_MIRROR
or NODIST_NODE_MIRROR
.
fetch
Type: boolean
Default: undefined
The list of available Node.js versions is cached for one hour by default. If the
fetch
option is:
true
: the cache will not be usedfalse
: the cache will be used even if it's older than one hour
signal
Type:
AbortSignal
Cancels when the signal is aborted.
NODE_VERSION_FILES
Type: string[]
List of filenames being searched: .nvmrc
, package.json
, etc.
See also
Support
For any question, don't hesitate to submit an issue on GitHub.
Everyone is welcome regardless of personal background. We enforce a
Code of conduct in order to promote a positive and
inclusive environment.
Contributing
This project was made with ❤️. The simplest way to give back is by starring and
sharing it online.
If the documentation is unclear or has a typo, please click on the page's Edit
button (pencil icon) and suggest a correction.
If you would like to help us fix a bug or add a new feature, please check our
guidelines. Pull requests are welcome!
Thanks go to our wonderful contributors: