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// dedupe duplicated packages, or find them in the tree
const Arborist = require('@npmcli/arborist')
const reifyFinish = require('../utils/reify-finish.js')
const ArboristWorkspaceCmd = require('../arborist-cmd.js')
class Dedupe extends ArboristWorkspaceCmd {
static description = 'Reduce duplication in the package tree'
static name = 'dedupe'
static params = [
'install-strategy',
'legacy-bundling',
'global-style',
'strict-peer-deps',
'package-lock',
'omit',
'ignore-scripts',
'audit',
'bin-links',
'fund',
'dry-run',
...super.params,
]
async exec (args) {
if (this.npm.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 opts = {
...this.npm.flatOptions,
path: where,
dryRun,
// Saving during dedupe would only update if one of your direct
// dependencies was also duplicated somewhere in your tree. It would be
// confusing if running this were to also update your package.json. In
// order to reduce potential confusion we set this to false.
save: false,
workspaces: this.workspaceNames,
}
const arb = new Arborist(opts)
await arb.dedupe(opts)
await reifyFinish(this.npm, arb)
}
}
module.exports = Dedupe
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