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// dedupe duplicated packages, or find them in the tree
const npm = require('./npm.js')
const Arborist = require('@npmcli/arborist')
const usageUtil = require('./utils/usage.js')
const reifyFinish = require('./utils/reify-finish.js')
const usage = usageUtil('dedupe', 'npm dedupe')
const cmd = (args, cb) => dedupe(args).then(() => cb()).catch(cb)
const dedupe = async (args) => {
if (npm.flatOptions.global) {
const er = new Error('`npm dedupe` does not work in global mode.')
er.code = 'EDEDUPEGLOBAL'
throw er
}
const dryRun = (args && args.dryRun) || npm.flatOptions.dryRun
const where = npm.prefix
const arb = new Arborist({
...npm.flatOptions,
path: where,
dryRun,
})
await arb.dedupe(npm.flatOptions)
await reifyFinish(arb)
}
module.exports = Object.assign(cmd, { usage })
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