fix: generate the separate chunk for the entry module with explicated chunk filename or name

[TrickyPi]

This PR contains:

• bugfix
• feature
• refactor
• documentation
• other

Are tests included?

• yes (bugfixes and features will not be merged without tests)
• no

Breaking Changes?

• yes (breaking changes will not be merged unless absolutely necessary)
• no

List any relevant issue numbers:

resolves #5907
resolves #5906

Description

If an entry module has a specified filename or name in this.emitFile() call or input options, we should generate a separate chunk for it

[vercel]

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Name	Status	Preview	Comments	Updated (UTC)
rollup	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Apr 26, 2025 6:07am

[github-actions]

Thank you for your contribution! ❤️

You can try out this pull request locally by installing Rollup via

npm install rollup/rollup#fix/5907

Notice: Ensure you have installed the latest stable Rust toolchain. If you haven't installed it yet, please see https://www.rust-lang.org/tools/install to learn how to download Rustup and install Rust.

or load it into the REPL:
https://rollup-ls5b8n2hg-rollup-js.vercel.app/repl/?pr=5923

[github-actions]

Performance report

• BUILD: 7157ms, 745 MB
  • initialize: 0ms, 28.2 MB
  • generate module graph: 2776ms, 561 MB
    • generate ast: 1286ms (+26ms, +2.1%), 554 MB
  • sort and bind modules: 394ms, 604 MB
  • mark included statements: 3996ms, 745 MB
    • treeshaking pass 1: 2363ms, 740 MB
    • treeshaking pass 2: 459ms, 744 MB
    • treeshaking pass 3: 397ms, 743 MB
    • treeshaking pass 4: 388ms, 752 MB
    • treeshaking pass 5: 385ms, 745 MB
• GENERATE: 727ms, 986 MB
  • initialize render: 0ms, 884 MB
  • generate chunks: 71ms, 895 MB
    • optimize chunks: 0ms, 889 MB
  • render chunks: 636ms, 964 MB
  • transform chunks: 16ms, 986 MB
  • generate bundle: 0ms, 986 MB

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 98.55%. Comparing base (99d4bee) to head (fb043eb).
Report is 2 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #5923   +/-   ##
=======================================
  Coverage   98.55%   98.55%           
=======================================
  Files         270      270           
  Lines        8692     8694    +2     
  Branches     1489     1490    +1     
=======================================
+ Hits         8566     8568    +2     
  Misses         93       93           
  Partials       33       33           

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[github-actions]

This PR has been released as part of rollup@4.40.1. You can test it via npm install rollup.