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Normalize and validate Node.js versions.

Takes any version range as inputs such as 8, 8.5.0 or >=8 and returns a "major.minor.patch" string. Throws if the Node.js version does not exist.

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import normalizeNodeVersion from 'normalize-node-version'

await normalizeNodeVersion('8') // '8.17.0'
await normalizeNodeVersion('8.5.0') // '8.5.0'
await normalizeNodeVersion('v8.5.0') // '8.5.0'
await normalizeNodeVersion('<7') // '6.17.1'
await normalizeNodeVersion('8.5.2') // Error: Invalid Node version
await normalizeNodeVersion('not_a_version') // Error: Invalid Node version

// All available options
await normalizeNodeVersion('8', {
  // Use a mirror for Node.js binaries
  mirror: '',
  // Do not cache the list of available Node.js versions
  fetch: true,
  // Cancels when the signal is aborted
  signal: new AbortController().signal,


npm install normalize-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.


normalizeNodeVersion(versionRange, options?)

versionRange: string
options: object?
Returns: Promise<string>



Type: string

Base URL to fetch the list of available Node.js versions. Can be customized (for example

The following environment variables can also be used: NODE_MIRROR, NVM_NODEJS_ORG_MIRROR, N_NODE_MIRROR or NODIST_NODE_MIRROR.


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 used
  • false: the cache will be used even if it's older than one hour


Type: AbortSignal

Cancels when the signal is aborted.

See also


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.


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:


💻 🎨 🤔 📖

Adrien Becchis

💻 ⚠️ 🤔

Maxim Mazurok


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npm i normalize-node-version

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