Build/Test Tools: Optimize uglify:core and copy:files glob patterns in Grunt tasks.

[westonruter]

The uglify:core task utilizes a negative glob pattern !**/*.min.js to prevent re-minifying already minified files. In development builds (npm run build:dev), this pattern operates relative to the src/ directory. Consequently, the glob expansion scans the entire src/ directory tree, including wp-content.

For environments where wp-content contains deep directory structures—such as plugins with node_modules dependencies—this traversal becomes prohibitively slow, causing the build process to hang.

This change scopes the exclusion pattern to !{wp-admin,wp-includes}/**/*.min.js, limiting the file scan to the relevant core directories and preventing unnecessary recursion into wp-content.

Trac ticket: https://core.trac.wordpress.org/ticket/64563

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Drafted Commit Message

Build/Test Tools: Optimize uglify:core and copy:files glob patterns in Grunt tasks.

The uglify:core and copy:files tasks utilized broad negative glob patterns (!**/*.min.js and !**/*.map) to exclude files from processing. The glob expansion scans the entire src/ directory tree, including wp-content. For environments where wp-content contains deep directory structures (such as plugins with node_modules dependencies) this traversal becomes prohibitively slow, causing the build process to hang.

This change scopes the exclusion patterns to specific directories (e.g. wp-admin, wp-includes, default themes, and Akismet), limiting the file scan to relevant core paths and preventing unnecessary recursion into wp-content.

In one dev environment, this reduces npm run build:dev from 43s to 9s, and npm run build from 51s to 13s.

Developed in #10809

Follow up to [61475].

Props westonruter, jonsurrell.
See #63606.
Fixes #64563.

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Props westonruter, jonsurrell.

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[sirreal]

I don't personally have this problem, but I was able to reproduce the slowdown by adding more plugins to my development checkout and this change fixes it.

It makes sense to only exclude things which are candidates for inclusion in the first place 🙂

[westonruter]

I asked Gemini if there were any other opportunities to improve performance similarly in Gruntfile.js, and it identified another glob pattern in copy:files. Indeed, when I run npm run build I find it hangs for a long time at:

Running "copy:files" (copy) task

However, with c413206 the time to build is dramatically improved:

Before: 51.102s
After: 13.805s

[github-actions]

A commit was made that fixes the Trac ticket referenced in the description of this pull request.

SVN changeset: 61545
GitHub commit: 4ef8507

This PR will be closed, but please confirm the accuracy of this and reopen if there is more work to be done.