如何在 webpacker 中添加 babel？

Question

我正在编写前端，这是我第一次需要使用 webpacker 在 RoR 应用程序中连接 babel。我不明白我应该与什么互动才能实现这一点。

我下载了 babel 所需的包：
-babel-code-frame;
-babel-loader;
-babel-plugin-dynamic-import-node;
-babel-plugin-宏。

然后我尝试与Nothing的webpacker.yml文件进行交互config/webpack/*.js.。

在后端，我们使用 ruby​​ 2.5.1 和 rails 6.0.0.rc2v

这是config/webpack/development.js文件：

process.env.NODE_ENV = process.env.NODE_ENV || 'development'

const webpack = require('webpack');
const environment = require('./environment')

module.exports = environment.toWebpackConfig()

环境.js文件：

const { environment } = require('@rails/webpacker')
const webpack = require('webpack')

environment.plugins.append('ProvidePlugin', new webpack.ProvidePlugin({
    $: 'jquery',
    jQuery: 'jquery',
    'window.jQuery': 'jquery',
    Popper: ['popper.js', 'default'],
}))

module.exports = environment

和 production.js 文件：

process.env.NODE_ENV = process.env.NODE_ENV || 'production'

const environment = require('./environment')

module.exports = environment.toWebpackConfig()

webpacker.yml 文件：

# Note: You must restart bin/webpack-dev-server for changes to take effect

default: &default
  source_path: app/javascript
  source_entry_path: packs
  public_root_path: public
  public_output_path: packs
  cache_path: tmp/cache/webpacker
  check_yarn_integrity: false
  webpack_compile_output: false

  # Additional paths webpack should lookup modules

  compile: false

  # Reload manifest.json on all requests so we reload latest compiled packs
  cache_manifest: false

  # Extract and emit a css file
  extract_css: false

  static_assets_extensions:
    - .jpg
    - .jpeg
    - .png
    - .gif
    - .tiff
    - .ico
    - .svg
    - .eot
    - .otf
    - .ttf
    - .woff
    - .woff2
    - .mp3
    - .ogg

  extensions:
    - .mjs
    - .js
    - .js.erb
    - .sass
    - .scss
    - .css
    - .module.sass
    - .module.scss
    - .module.css
    - .png
    - .svg
    - .gif
    - .jpeg
    - .jpg

development:
  <<: *default
  compile: true

  # Verifies that correct packages and versions are installed by inspecting package.json, yarn.lock, and node_modules
  check_yarn_integrity: true

  extract_css: false

  # Reference: https://webpack.js.org/configuration/dev-server/
  dev_server:
    https: false
    host: localhost
    port: 3035
    public: localhost:3035
    hmr: false
    # Inline should be set to true if using HMR
    inline: true
    overlay: true
    compress: true
    disable_host_check: true
    use_local_ip: false
    quiet: false
    headers:
      'Access-Control-Allow-Origin': '*'
    watch_options:
      ignored: '**/node_modules/**'


test:
  <<: *default
  compile: true

  # Compile test packs to a separate directory
  public_output_path: packs-test

production:
  <<: *default

  # Production depends on precompilation of packs prior to booting for performance.
  compile: false

  # Extract and emit a css file
  extract_css: false

  # Cache manifest.json for performance
  cache_manifest: true