EntryModuleNotFoundError: Entry module not found: Error: Can't resolve 'eslint-loader' in '/tmp/buil

Question

前提・実現したいこと

• herokuにデプロイしたいです。
• buildに失敗してしまいます。
• eslint-loader はローカルで正常にインストールできています。

発生している問題・エラーメッセージ

-----> Installing node-v10.14.1-linux-x64
-----> Installing yarn-v1.12.3
-----> Detecting rake tasks
-----> Preparing app for Rails asset pipeline
       Running: rake assets:precompile
       yarn install v1.12.3
       [1/4] Resolving packages...
       [2/4] Fetching packages...
       info fsevents@1.2.9: The platform "linux" is incompatible with this module.
       info "fsevents@1.2.9" is an optional dependency and failed compatibility check. Excluding it from installation.
       [3/4] Linking dependencies...
       warning " > @babel/preset-react@7.0.0" has unmet peer dependency "@babel/core@^7.0.0-0".
       warning "@babel/preset-react > @babel/plugin-transform-react-display-name@7.2.0" has unmet peer dependency
       Compiling…
       Compilation failed:
       EntryModuleNotFoundError: Entry module not found: Error: Can't resolve 'eslint-loader' in '/tmp/build_1ff7480291fe82d9b913577f072271a1'
           at moduleFactory.create 
           at _fn0 (eval at create (/tmp/build_1ff7480291fe82d9b913577f072271a1/node_modules/tapable/lib/HookCodeFactory.js:33:10), <anonymous>:15:1)
           at hook.callAsync (/tmp/build_1ff7480291fe82d9b913577f072271a1/node_modules/enhanced-resolve/lib/Resolver.js:238:5)
           at _fn0 (eval at create (/tmp/build_1ff7480291fe82d9b913577f072271a1/node_modules/tapable/lib/HookCodeFactory.js:33:10), <anonymous>:27:1)
           at resolver.doResolve (/tmp/build_1ff7480291fe82d9b913577f072271a1/node_modules/enhanced-resolve/lib/DescriptionFilePlugin.js:42:38)
           at hook.callAsync (/tmp/build_1ff7480291fe82d9b913577f072271a1/node_modules/enhanced-resolve/lib/Resolver.js:238:5)
           at _fn1 (eval at create (/tmp/build_1ff7480291fe82d9b913577f072271a1/node_modules/tapable/lib/HookCodeFactory.js:33:10), <anonymous>:16:1)
       resolve 'eslint-loader' in '/tmp/build_1ff7480291fe82d9b913577f072271a1'
         Parsed request is a module
         using description file: /tmp/build_1ff7480291fe82d9b913577f072271a1/package.json (relative path: .)
           resolve as module
             /tmp/node_modules doesn't exist or is not a directory
             /node_modules doesn't exist or is not a directory
             looking for modules in /tmp/build_1ff7480291fe82d9b913577f072271a1/node_modules
               using description file: /tmp/build_1ff7480291fe82d9b913577f072271a1/package.json (relative path: ./node_modules)
                 using description file: /tmp/build_1ff7480291fe82d9b913577f072271a1/package.json (relative path: ./node_modules/eslint-loader)
                   no extension
                     /tmp/build_1ff7480291fe82d9b913577f072271a1/node_modules/eslint-loader doesn't exist
                   .js
                     /tmp/build_1ff7480291fe82d9b913577f072271a1/node_modules/eslint-loader.js doesn't exist
                   .json
                     /tmp/build_1ff7480291fe82d9b913577f072271a1/node_modules/eslint-loader.json doesn't exist
                   as directory
                     /tmp/build_1ff7480291fe82d9b913577f072271a1/node_modules/eslint-loader doesn't exist
       
 !
 !     Precompiling assets failed.
 !
 !     Push rejected, failed to compile Ruby app.
 !     Push failed

該当のソースコード

package.json

{
  "name": "code-review",
  "private": true,
  "dependencies": {
    "@babel/preset-react": "^7.0.0",
    "@rails/webpacker": "^4.0.7",
    "babel-plugin-transform-react-remove-prop-types": "^0.4.24",
    "bootstrap": "4.3.1",
    "jquery": "^3.4.1",
    "popper.js": "^1.15.0",
    "postcss-loader": "^3.0.0",
    "prop-types": "^15.7.2",
    "rails-ujs": "^5.2.3",
    "react": "^16.8.6",
    "react-dom": "^16.8.6",
    "sass-loader": "^7.1.0",
    "turbolinks": "^5.2.0"
  },
  "devDependencies": {
    "eslint": "^5.16.0",
    "eslint-config-standard": "^12.0.0",
    "eslint-config-standard-react": "^7.0.2",
    "eslint-loader": "^2.1.2",
    "eslint-plugin-import": "^2.17.3",
    "eslint-plugin-node": "^9.1.0",
    "eslint-plugin-promise": "^4.1.1",
    "eslint-plugin-react": "^7.13.0",
    "eslint-plugin-standard": "^4.0.0",
    "webpack-dev-server": "^3.7.1"
  },
  "scripts": {
    "lint": "yarn run eslint --ext .react --ext .js app/javascript"
  }
}

試したこと

• キャッシュが原因かと思ったので以下のコマンドを試しました。

heroku plugins:install heroku-repo
heroku repo:purge_cache -a appname

Answer 1

https://relativelayout.hatenablog.com/entry/2018/11/08/092143
nodeのversionを指定するとどうでしょうか？

Comments

[s.k]

ありがとうございます。うーん、バージョンは指定したのですがエラーログに変化は無い様に見えます。。。
"private": true,
"engines": {
"node": "10.14.1",
"npm": "6.4.1"
},
"dependencies": {