chore: clean up and document

[graphieros]

• clean up remaining dead code
• DownloadAnalytics.vue contains a lot of complexity. Major functions with some amount of cognitive load are documented.

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Project	Deployment	Actions	Updated (UTC)
npmx.dev	Ready	Preview, Comment	Feb 4, 2026 3:39pm

[codecov]

Codecov Report

❌ Patch coverage is 50.00000% with 2 lines in your changes missing coverage. Please review.
✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
app/components/Package/DownloadAnalytics.vue	50.00%	1 Missing and 1 partial ⚠️

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[coderabbitai]

📝 Walkthrough

Walkthrough

The changes refactor the DownloadAnalytics.vue component by introducing utility helpers for evolution data processing (formatXyDataset, extractSeriesPoints, and date-range initialisation functions) and restructuring the data flow logic. The shouldFetch flag has been replaced with direct watcher logic, a new chartConfig computed object manages component configuration, and chartData computation now uses the new formatting helpers to support both single- and multi-package data alignment. The template rendering has been updated to use the new chartConfig and chartData consistently, with additional JSDoc documentation added for clarity.

Possibly related PRs

• npmx-dev/npmx.dev\feat: add charts to compare page #846: Modifies the same DownloadAnalytics.vue component to implement multi-package chart logic, dataset formatting, and date-range handling utilities.

Suggested reviewers

• danielroe

🚥 Pre-merge checks | ✅ 1

✅ Passed checks (1 passed)

Check name	Status	Explanation
Description check	✅ Passed	The pull request description directly addresses the changeset, mentioning dead code cleanup and documentation of DownloadAnalytics.vue functions to reduce complexity.

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✨ Finishing touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment

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