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const { promisify } = require('util')
const readdir = promisify(require('readdir-scoped-modules'))
const installedShallow = async (npm, opts) => {
const names = global => readdir(global ? npm.globalDir : npm.localDir)
const { conf: { argv: { remain } } } = opts
if (remain.length > 3)
return null
const { global } = npm.flatOptions
const locals = global ? [] : await names(false)
const globals = (await names(true)).map(n => global ? n : `${n} -g`)
return [...locals, ...globals]
}
module.exports = installedShallow
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