Charts: Add TrendIndicator component

[annacmc]

Closes CHARTS-144

Proposed changes:

• Add new TrendIndicator component for displaying directional trends with values
• Support three directions: up (green), down (red), neutral (gray)
• Include arrow icon for up/down directions, no icon for neutral
• Export component and types from main package entry
• Add package.json export paths for tree-shaking support

Other information:

• [x] Have you written new tests for your changes, if applicable?
• [x] Have you checked the E2E test CI results, and verified that your changes do not break them?
• [ ] Have you tested your changes on WordPress.com, if applicable (if so, you'll see a generated comment below with a script to run)?

Does this pull request change what data or activity we track or use?

No, it does not.

Testing instructions:

• Go to Storybook -> Charts -> Components -> Trend Indicator
• Test the three stories:
  • Up: Should display green arrow pointing up with "+14%"
  • Down: Should display red arrow pointing down with "-5%"
  • Neutral: Should display gray text "0%" with no icon
• Verify the component accepts className and style props for customization
• Run tests: pnpm test -- src/components/trend-indicator
• Build package: pnpm build and verify trend-indicator outputs are generated

[github-actions[bot]]

Are you an Automattician? Please test your changes on all WordPress.com environments to help mitigate accidental explosions.

• To test on WoA, go to the Plugins menu on a WoA dev site. Click on the "Upload" button and follow the upgrade flow to be able to upload, install, and activate the Jetpack Beta plugin. Once the plugin is active, go to Jetpack > Jetpack Beta, select your plugin (Jetpack), and enable the add/charts-new-trend-indicator branch.
• To test on Simple, run the following command on your sandbox:

bin/jetpack-downloader test jetpack add/charts-new-trend-indicator

Interested in more tips and information?

• In your local development environment, use the jetpack rsync command to sync your changes to a WoA dev blog.
• Read more about our development workflow here: PCYsg-eg0-p2
• Figure out when your changes will be shipped to customers here: PCYsg-eg5-p2

[github-actions[bot]]

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Code Coverage Summary

3 files are newly checked for coverage.

File	Coverage
projects/js-packages/charts/src/components/trend-indicator/trend-indicator.tsx	8/8 (100.00%) 💚
projects/js-packages/charts/src/components/trend-indicator/index.ts	0/0 (—%) 🤷

Full summary · PHP report · JS report