PouchDB Rollup Conflict

index.js

import PouchDB from 'pouchdb-browser'
import MemoryAdapterPlugin from 'pouchdb-adapter-memory'

PouchDB.plugin(MemoryAdapterPlugin)

package.json

{
  "name": "rollup-test",
  "private": true,
  "scripts": {
    "build": "rollup -c"
  },
  "dependencies": {
    "pouchdb-adapter-memory": "^7.2.2",
    "pouchdb-browser": "^7.2.2"
  },
  "devDependencies": {
    "@rollup/plugin-commonjs": "^21.0.3",
    "@rollup/plugin-node-resolve": "^13.2.0",
    "rollup": "^2.70.1",
    "rollup-plugin-node-polyfills": "^0.2.1"
  }
}

rollup.config.js

import commonjs from '@rollup/plugin-commonjs'
import resolve from '@rollup/plugin-node-resolve'
import nodePolyfills from 'rollup-plugin-node-polyfills'

export default {
  input: 'index.js',
  output: {
    format: 'iife',
    name: 'app',
    file: 'bundle.js'
  },
  plugins: [
    nodePolyfills(),

    resolve({
      preferBuiltins: true,
      browser: true
    }),

    commonjs({
      dynamicRequireTargets: [
        'node_modules/memdown/*.js',
      ],
    }),
  ]
}