• Install Node version v19.7.0
• npm install
• npm run build

Current result:

cat public/assets/largeLib.js

(self.webpackChunkwebpack5_issue_20230725=self.webpackChunkwebpack5_issue_20230725||[]).push([[849],{616:()=>{console.log("hello large lib")},850:()=>{console.log("hello large lib")}}]);%

Expected result:

Expected the chunk largeLib to include the content of app/assets/javascripts/large_lib.js only once.

cat public/assets/largeLib.js

(self.webpackChunkwebpack5_issue_20230725=self.webpackChunkwebpack5_issue_20230725||[]).push([[849],{616:()=>{console.log("hello large lib")}}]);%