ruby-on-rails - 使用 webpack 部署到 Heroku 时预编译 Assets 时出错

我有一个最近升级到 rails 5.2 的项目，我正在使用 webpacker gem。尝试部署到 Heroku 时出现以下错误:

...
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(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，或者我需要在配置文件中添加一些东西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 的输出提到了使用 config/webpacker.yml 设置 webpacker 路径，但我在那个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on github

最佳答案

我能够使用 yarn 1.10.1 在我的本地机器上预编译您的 Assets 。 Heroku 可能使用旧版本的 yarn，这可能会导致 webpacker 3 出现一些问题。

所以尝试升级到最新版本的yarn，然后在本地机器上运行以下命令:

# reinstall the node_modules
yarn install

# this is what heroku does to precompile your assets
bundle exec rake assets:precompile

这应该更新你的 yarn.lock 文件。如果一切正常，然后尝试 git commiting 并再次推送。

希望这会排序。祝你好运。

关于ruby-on-rails - 使用 webpack 部署到 Heroku 时预编译 Assets 时出错，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/52540337/