Resolve Node.js version aliases like latest, lts or erbium.

Those aliases are used by Node.js version managers like nvm, nvs, n, nave, nodeenv or nodist.

This resolves them to a "major.minor.patch" version string. The following aliases are supported:

• latest, stable, node, current: latest version
• lts or lts/*: latest LTS version
• lts/-1, lts/-2, etc.: first/second/etc. latest LTS version
• lts/erbium, erbium, etc.: specific LTS, using its name (case-insensitive)
• nvm custom aliases (including default)
• system: Node.js version when nvm is deactivated
• iojs: always 4.0.0
• unstable: always 0.11.6

Normal version ranges (like 12.1.0, 12 or >=10) are valid inputs too.

Examples

import nodeVersionAlias from 'node-version-alias'

// Note: the following examples might be out-of-sync with the actual versions
console.log(await nodeVersionAlias('latest')) // 13.13.0
console.log(await nodeVersionAlias('lts')) // 12.16.2
console.log(await nodeVersionAlias('lts/erbium')) // 12.16.2
console.log(await nodeVersionAlias('erbium')) // 12.16.2
console.log(await nodeVersionAlias('lts/-2')) // 10.20.1

// Normal version ranges
console.log(await nodeVersionAlias('10.0.0')) // 10.0.0
console.log(await nodeVersionAlias('10')) // 10.20.1
console.log(await nodeVersionAlias('^10')) // 10.20.1
console.log(await nodeVersionAlias('>=10')) // 13.13.0

// Allowed options
await nodeVersionAlias('latest', {
  // Use a mirror for Node.js binaries
  mirror: 'https://npmmirror.com/mirrors/node',
  // Do not cache the list of available Node.js versions
  fetch: true,
})

Install

npm install node-version-alias

This package is an ES module and must be loaded using an import or import() statement, not require().

Usage

nodeVersionAlias(alias, options?)

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

The return value resolves to a "major.minor.patch" version string.

options

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

See also

• nve: Run a specific Node.js version (CLI)
• nvexeca: Run a specific Node.js version (programmatic)
• get-node: Download Node.js
• normalize-node-version: Normalize and validate Node.js versions
• preferred-node-version: Get the preferred Node.js version of a project or user
• all-node-versions: List all available Node.js versions
• fetch-node-website: Fetch releases on nodejs.org

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:

ehmicky 💻 🎨 🤔 📖

Adrien Becchis 💻 ⚠️ 🤔