@ethersphere/bee-js/dist/mjs/utils/chunk-size.js

Javascript client for Bee

export function totalChunks(fileSize) {
  const chunkSize = 4096;
  const hashesPerChunk = 128;
  function chunksAtLevel(chunkCount) {
    if (chunkCount <= 1) {
      return chunkCount;
    }
    const upperLevelChunks = Math.ceil(chunkCount / hashesPerChunk);
    return chunkCount + chunksAtLevel(upperLevelChunks);
  }
  const baseLevelChunks = Math.ceil(fileSize / chunkSize);
  return chunksAtLevel(baseLevelChunks);
}