const skns = require('../data/skns.json');
const _ = require('lodash');

const products = _.groupBy(skns, 'productId');

console.log('products:')
_.each(products, pds => {
  if (pds.length > 1) {
    console.log(pds)
  }
})


const yhIds = _.groupBy(skns, 'yhId');

console.log('yhIds:')
_.each(yhIds, pds => {
  if (pds.length > 1) {
    console.log(pds)
  }
})