module.exports = cls => class Deduper extends cls { async dedupe (options = {}) { // allow the user to set options on the ctor as well. // XXX: deprecate separate method options objects. options = { ...this.options, ...options } const tree = await this.loadVirtual().catch(() => this.loadActual()) const names = [] for (const name of tree.inventory.query('name')) { if (tree.inventory.query('name', name).size > 1) { names.push(name) } } return this.reify({ ...options, preferDedupe: true, update: { names }, }) } }