utils.js

const { resolve } = require('path')
const chalk = require('chalk')
const findInFiles = require('find-in-files')

const importReg = /'(.*?)'$/

async function findVendorEntries (vendors, folder) {
  const reg = `import (.*? from )?'((${vendors.join('|')})/.*?)'`
  const results = await findInFiles.find(reg, folder, /\.(vue|jsx?|styl)$/)
  const set = new Set(vendors)
  for (const file in results) {
    const result = results[file]
    for (const n in result.matches) {
      const matches = result.matches[n].match(importReg)
      if (matches && matches.length > 1) {
        const p = matches[1]
        set.add(p)
      }
    }
  }
  return Array.from(set)
}

module.exports = {
  getAlias,
  formatModule,
  findVendorEntries,
}

webpack.config.js

const { findVendorEntries } = require('./utils')

module.exports = {
  plugins: [
    new AutoDllPlugin({
      path: resolve(__dirname, '../dist/'),
      filename: '[name].dll.js',
      entry: {
        vendor: [
          ...await findVendorEntries(Object.keys(packageData.dependencies), resolve(__dirname, '../src/')),
          'core-js',
          'common/css/vendors',
          'common/js/vendors',
        ],
      },
      context,
      debug: true,
      inherit: true,
    }),
  ]
}