RSIndexDiff • tldraw Docs

A type representing the diff of changes to a reactive store index. Maps property values to the collection differences for record IDs that have that property value.

type RSIndexDiff<R extends UnknownRecord> = Map<any, CollectionDiff<IdOf<R>>>;

Example

// For an index on book titles, the diff might look like:
const titleIndexDiff: RSIndexDiff<Book, "title"> = new Map([
  ["The Lathe of Heaven", { added: new Set(["book:1"]), removed: new Set() }],
  ["Animal Farm", { added: new Set(), removed: new Set(["book:2"]) }],
]);