fix: show integers for values below 1k in trends chart tooltip

[graphieros]

Follow up to #2519

This fixes an edge case for the big charts (downloads modal, compare page) where values displayed in the tooltip have decimals applied when data correction is enabled and the value in the tooltip is < 1k.
Just rounding the number before it is served to the formatter.

[vercel]

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Project	Deployment	Actions	Updated (UTC)
npmx.dev	Ready	Preview, Comment	Apr 16, 2026 3:03pm

2 Skipped Deployments

Project	Deployment	Actions	Updated (UTC)
docs.npmx.dev	Ignored	Preview	Apr 16, 2026 3:03pm
npmx-lunaria	Ignored		Apr 16, 2026 3:03pm

[coderabbitai]

📝 Walkthrough

Walkthrough

Rounded tooltip raw values with Math.round(...) before passing to compactNumberFormatter, preserving non-finite coercion to 0 and affecting both single- and multi-series tooltip rows in the trends chart component.

Changes

Cohort / File(s)	Summary
Trends chart tooltip app/components/Package/TrendsChart.vue	Changed tooltip raw derivation from Number(d?.value ?? 0) to Math.round(Number(d?.value ?? 0)), then formatted with compactNumberFormatter; non-finite values still coerced to 0.

Possibly related PRs

• fix(i18n): missing number formatting #2158: Related changes to number formatting across UI components, including adoption/usage of compactNumberFormatter.
• fix: add date in chart tooltip #1831: Modifies the same customFormat tooltip rendering path in TrendsChart.vue, adjusting tooltip formatting logic.

Suggested reviewers

• danielroe
• 43081j

🚥 Pre-merge checks | ✅ 2

✅ Passed checks (2 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title accurately reflects the main change: rounding numeric values in the trends chart tooltip to display integers for values below 1k.
Description check	✅ Passed	The pull request description clearly relates to the changeset, explaining a bug fix for tooltip value formatting in the trends chart component.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch format-download-chart-tooltip-values

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[codecov]

Codecov Report

❌ Patch coverage is 0% with 1 line in your changes missing coverage. Please review.
✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
app/components/Package/TrendsChart.vue	0.00%	0 Missing and 1 partial ⚠️

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