ESLint rules have been added to enforce our JSDoc conventions. These
rules were introduced by updating `@metamask/eslint-config` to v9.
Some of the rules have been disabled because the effort to fix all lint
errors was too high. It might be easiest to enable these rules one
directory at a time, or one rule at a time.
Most of the changes in this PR were a result of running
`yarn lint:fix`. There were a handful of manual changes that seemed
obvious and simple to make. Anything beyond that and the rule was left
disabled.
The confirmation page template system allows templates to have alerts,
but it throws an uncaught Promise rejection if a template has no
alerts. This is the unintended side-effect of input validation.
The `getTemplateAlerts` function was updated to always return an array.
The one callsite was updated to expect an empty array if there were no
alerts to render, rather than expecting `undefined`.
Mark Stacey
Brad Decker