doc: add esm alternative for require.main

[tschaub]

This adds the absence of require.main to the list of differences between ES Modules and CommonJS.

Comparing import.meta.url to process.argv[1] is documented as an alternative to require.main === module.

See #49440.

Checklist

• documentation is changed or added
• mkdir out/Release
• ln -s `which node` out/Release/node
• make test-doc
• commit message follows commit guidelines

[devsnek]

You could also add the suggestion of splitting the bin and library into separate files.

[jasnell]

Ping @tschaub

[tschaub]

@jasnell - I resolved the conflicts. Let me know if the ping was about something different.

[aduh95]

@tschaub there are new conflicts to solve. TBH, I'm not sure we want to add this to the docs if it doesn't fit every use case, users would be better off by using es-main npm package, or by splitting the bin and library.

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[github-actions]

Closing this because it has stalled. Feel free to reopen if this PR is still relevant, or to ping the collaborator who labelled it stalled if you have any questions.