Rich text / foldkit-richtext-dom/toolbar

selectionAnchor

const · packages/richtext-dom/src/floating.ts:241

const selectionAnchor: Mount.MountDefinitionWithArgs<
  'RichTextSelectionAnchor',
  {
    hostId: Schema.String
    gap: Schema.Number
    caret: Schema.optionalKey<Schema.Boolean>
  },
  never
>

anchorToSelection as a Mount, for the element a floating toolbar is drawn in.