fix: prefer warning over throwing when `<PrismicLink>` is given an invalid prop in development

[angeloashmore]

Types of changes

• [ ] Chore (a non-breaking change which is related to package maintenance)
• [x] Bug fix (a non-breaking change which fixes an issue)
• [ ] New feature (a non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to change)

Description

This PR changes <PrismicLink>'s development-only behavior to warn rather than throw when given an invalid Link field or Prismic document (in most cases; see the note below).

In addition to reducing the severity of an invalid field or document, this PR also fixes a bug where a valid unfilled Link field (i.e. a field that a content writer did not fill in) was treated as invalid. Unfilled Link fields are now treated as valid.

Note: <PrismicLink> will still throw if a link_type property is missing from the provided field prop value. link_type is required to detect the type of link and is populated even for unfilled Link fields.

(Thanks to @kb1995 for discovering this bug!)

Checklist:

• [ ] My change requires an update to the official documentation.
• [x] All TSDoc comments are up-to-date and new ones have been added where necessary.
• [x] All new and existing tests are passing.

🐱

[github-actions[bot]]

size-limit report 📦

Path	Size
dist/index.js	5.65 KB (+0.4% 🔺)
dist/index.cjs	7.18 KB (+0.31% 🔺)