lambda-service/src/html/formatChunksMap.js

import { extname } from 'path'

export default function(chunks = {}) {
  return Object.keys(chunks).reduce((memo, key) => {
    chunks[key].forEach(file => {
      if (!file.includes('.hot-update')) {
        memo[`${key}${extname(file)}`] = file
      }
    })
    return memo
  }, {})
}