erbファイルにjavascriptを読み込ませたら以下のエラーが発生
<%= javascript_pack_tag 'home/select' %>
解決方法
bin/yarnを実行
yarn install v1.22.10 warning package-lock.json found. Your project contains lock files generated by tools other than Yarn. It is advised not to mix package managers in order to avoid resolution inconsistencies caused by unsynchronized lock files. To clear this warning, remove package-lock.json. [1/4] 🔍 Resolving packages... success Already up-to-date.
このコマンドで全てのパッケージと依存関係をインストール。一度実行しているのでAlready up-to-dateと表示されました
bin/webpackを実行
[./app/javascript/channels sync recursive _channel\.js$] ./app/javascript/channels sync _channel\.js$ 160 bytes {application} [built]
[./app/javascript/channels/index.js] 211 bytes {application} [built]
[./app/javascript/packs/application.js] 866 bytes {application} [built]
[./app/javascript/packs/home/select.js] 31 bytes {home/select} [built]
[./app/javascript/src/application.scss] 664 bytes {application} [built]
[./node_modules/css-loader/dist/cjs.js?!./node_modules/postcss-loader/src/index.js?!./node_modules/sass-loader/dist/cjs.js?!./app/javascript/src/application.scss] ./node_modules/css-loader/dist/cjs.js??ref--6-1!./node_modules/postcss-loader/src??ref--6-2!./node_modules/sass-loader/dist/cjs.js??ref--6-3!./app/javascript/src/application.scss 746 KiB {application} [built]
[./node_modules/webpack/buildin/module.js] (webpack)/buildin/module.js 552 bytes {application} [built]
+ 172 hidden modules
これでコンパイルしてくれます。
