Function countUniqueFilesFromCallItems

src/tools/LSPTool/LSPTool.ts:835–838

* Counts unique files from CallHierarchyItem array * Filters out items with undefined URIs

(items: CallHierarchyItem[])

 * Filters out items with undefined URIs
 */
function countUniqueFilesFromCallItems(items: CallHierarchyItem[]): number {
  const validUris = items.map(item => item.uri).filter(uri => uri)
  return new Set(validUris).size
}

/**
 * Counts unique files from CallHierarchyIncomingCall array