// @flow

import type {Node} from '@transclusion/bundle'

import {transform} from 'babel-core'

type BabelOpts = {}

export default (opts?: BabelOpts) => ({
  pattern: /\.js$/,
  transform (node: Node) {
    const result = transform(
      node.code,
      opts ? Object.assign({}, opts, {babelrc: false}) : {}
    )

    node.code = result.code

    return Promise.resolve(node)
  }
})