Function createImportDuplicateIndex

packages/core/src/import/import-dedupe.ts:50–67

(books: Book[])

}

export function createImportDuplicateIndex(books: Book[]): ImportDuplicateIndex {
  const byHash = new Map<string, Book>();
  const byName = new Map<string, Book>();

  for (const book of books) {
    if (book.fileHash) {
      byHash.set(book.fileHash, book);
    }

    for (const candidate of buildBookNameCandidates(book)) {
      if (!byName.has(candidate)) {
        byName.set(candidate, book);
      }
    }
  }

  return { byHash, byName };
}

export function findDuplicateBookByHash(
  index: ImportDuplicateIndex,