bookmarkAssetMigrations

Migration sequence for bookmark assets. Handles the evolution of bookmark asset data structure over time, ensuring backward and forward compatibility.

The migration sequence includes: 1. MakeUrlsValid (v1): Validates and cleans up src URLs, setting invalid URLs to empty string 2. AddFavicon (v2): Adds the favicon property and validates it, setting invalid favicons to empty string

bookmarkAssetMigrations: import("@tldraw/store").MigrationSequence;