Let's explore if we can use the Charts CSS project (line component or area component) for implementing the sparklines in the NewImpact module.

Positives:

• we don't need to wait for T318854: Application Security Review Request : d3.js
• even if T318854: Application Security Review Request : d3.js is approved, by using a CSS-only solution we'd have a smaller payload to deliver to clients, better for performance

Negatives:

• as it's CSS-only, there's no ability to add interactivity. That said, current designs don't include any interactivity for individual points on the line, so this is OK for the current iteration.

Acceptance Criteria

1. Should be able to ....
2. ....

Completion checklist

Functionality

• The patches have been code reviewed and merged
• The task passes its acceptance criteria

Engineering

• There are existing and passing unit/integration tests
• Tests for every involved patch should pass
• Coverage for every involved project should have improved or stayed the same

Design & QA

• If the task is UX/Design related: it must be reviewed and approved by the UX/Design team
• Must be reviewed and approved by Quality Assurance.

Documentation

• Related and updated documentation done where necessary
  • Internal technical changes: internal repository documentation must be updated (README.md, JSDoc, PHPDoc)
  • Infrastructure technical changes: technical changes that reflect on environment, infrastructure, endpoints or any other area of interest for technical contributors should be reflected on Extension:GrowthExperiments or Extension:GrowthExperiments/Technical documentation pages.