/** Non-field builder selection (canvas blocks from extensions, submit button). */
export type BuilderEntitySelection = { kind: 'canvas'; id: string } | { kind: 'submit-button' }

export function builderEntitySelectionEquals(
  a: BuilderEntitySelection | null | undefined,
  b: BuilderEntitySelection,
): boolean {
  if (!a) {
    return false
  }
  if (a.kind !== b.kind) {
    return false
  }
  if (a.kind === 'canvas' && b.kind === 'canvas') {
    return a.id === b.id
  }
  return true
}