使用 webpack 部署到 Heroku 时预编译资产时出错

我有一个项目最近升级到了 Rails 5.2，并且我正在使用 webpacker gem。我在尝试部署到 Heroku 时收到以下错误：

...
remote:        Webpacker is installed ???? ????
remote:        Using /tmp/build_b969a2366f45a65a0c09b6aaa4b24667/config/webpacker.yml file for setting up webpack paths
remote:        Compiling…
remote:        Compilation failed:
remote:        /tmp/build_b969a2366f45a65a0c09b6aaa4b24667/vendor/bundle/ruby/2.5.0/gems/webpacker-3.5.5/lib/webpacker/webpack_runner.rb:11:in `exec': No such file or directory - /tmp/build_b969a2366f45a65a0c09b6aaa4b24667/node_modules/.bin/webpack (Errno::ENOENT)
remote:         from /tmp/build_b969a2366f45a65a0c09b6aaa4b24667/vendor/bundle/ruby/2.5.0/gems/webpacker-3.5.5/lib/webpacker/webpack_runner.rb:11:in `block in run'
remote:         from /tmp/build_b969a2366f45a65a0c09b6aaa4b24667/vendor/bundle/ruby/2.5.0/gems/webpacker-3.5.5/lib/webpacker/webpack_runner.rb:10:in `chdir'
remote:         from /tmp/build_b969a2366f45a65a0c09b6aaa4b24667/vendor/bundle/ruby/2.5.0/gems/webpacker-3.5.5/lib/webpacker/webpack_runner.rb:10:in `run'
remote:         from /tmp/build_b969a2366f45a65a0c09b6aaa4b24667/vendor/bundle/ruby/2.5.0/gems/webpacker-3.5.5/lib/webpacker/runner.rb:6:in `run'
remote:         from ./bin/webpack:15:in `<main>'
...

在本地，我的“node_modules”目录位于 .gitignore 中（我相信 webpacker 安装脚本之一将其放在那里）。

我是否需要取消忽略 node_modules，或者是否需要在配置文件中添加一些内容来告诉远程在哪里可以找到 webpack？

这是我的 package.json：

{
  "dependencies": {
    "@rails/webpacker": "3.5.5",
    "babel-preset-react": "^6.24.1",
    "d3": "^5.7.0",
    "jquery": "^3.3.1",
    "prop-types": "^15.6.2",
    "react": "^16.5.2",
    "react-addons-transition-group": "^15.6.2",
    "react-dom": "^16.5.2",
    "react-transition-group": "^2.4.0",
    "react_ujs": "^2.4.4"
  },
  "devDependencies": {
    "webpack-dev-server": "2.11.2"
  },
  "engines": {
    "yarn": "1.10.1"
  } 
}

我注意到 heroku 的输出提到使用 config/webpacker.yml 设置 webpacker 路径，但我在该文件中找不到任何提及在 node_modules 中查找 webpack 的内容 - 这是 webpacker.yml 的文本：

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

default: &default
  source_path: app/javascript
  source_entry_path: packs
  public_output_path: packs
  cache_path: tmp/cache/webpacker

  # Additional paths webpack should lookup modules
  # ['app/assets', 'engine/foo/app/assets']
  resolved_paths: []

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

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

development:
  <<: *default
  compile: true

  # 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

  # Cache manifest.json for performance
  cache_manifest: true

整个项目可以找到在 github 上 https://github.com/fredwillmore/visualizations

我最终通过重建解决了这个问题/bin使用以下命令的目录：

rails app:update:bin

我推断我一定损坏了该目录中的某些内容。我已经开始使用该项目rails-jquery and rails-reactgems，然后使用 webpacker 安装脚本来安装 jquery 和 React。我决定使用yarn add ...添加jquery和rails，这样我就可以使用yarn更紧密、一致地管理我的依赖项。