npm
Version:
a package manager for JavaScript
20 lines (14 loc) • 510 B
JavaScript
const crypto = require('crypto')
const { resolve } = require('path')
const cacheInstallDir = ({ npxCache, packages }) => {
if (!npxCache)
throw new Error('Must provide a valid npxCache path')
// only packages not found in ${prefix}/node_modules
return resolve(npxCache, getHash(packages))
}
const getHash = (packages) =>
crypto.createHash('sha512')
.update(packages.sort((a, b) => a.localeCompare(b, 'en')).join('\n'))
.digest('hex')
.slice(0, 16)
module.exports = cacheInstallDir