import { getNvmSystemVersion } from './nvm.js'

// Resolve aliases whose name is a constant and is not LTS-related

export const getConstantAlias = (alias) => {

const versionRange = ALIASES[alias]

if (versionRange === undefined) {

return

}

if (typeof versionRange !== 'function') {

return versionRange

}

return versionRange()

}

const ALIASES = {

// Latest version (nave, nvm-windows, n, nvs, nodebrew, nodist, fish-nvm)

latest: '*',

// Latest version (nvm, nave, nodebrew)

stable: '*',

// Latest version (nvm)

node: '*',

// Latest version (n, fish-nvm)

current: '*',

// Version if nvm was not installed

system: getNvmSystemVersion,

// Alias from nvm. Now that iojs is merged to Node.js, it is always this

// version.

iojs: '4.0.0',

// Old deprecated nvm alias

unstable: '0.11',

}