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// dedupe duplicated packages, or find them in the tree
const Arborist = require('@npmcli/arborist')
const usageUtil = require('./utils/usage.js')
const reifyFinish = require('./utils/reify-finish.js')
class Dedupe {
constructor (npm) {
this.npm = npm
}
/* istanbul ignore next - see test/lib/load-all-commands.js */
get usage () {
return usageUtil('dedupe', 'npm dedupe')
}
exec (args, cb) {
this.dedupe(args).then(() => cb()).catch(cb)
}
async dedupe (args) {
if (this.npm.config.get('global')) {
const er = new Error('`npm dedupe` does not work in global mode.')
er.code = 'EDEDUPEGLOBAL'
throw er
}
const dryRun = this.npm.config.get('dry-run')
const where = this.npm.prefix
const arb = new Arborist({
...this.npm.flatOptions,
path: where,
dryRun,
})
await arb.dedupe(this.npm.flatOptions)
await reifyFinish(this.npm, arb)
}
}
module.exports = Dedupe
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