Function splitDeepnoteFile

packages/convert/src/snapshot/split.ts:148–185

(file: DeepnoteFile)

 * @returns Object containing source and snapshot files
 */
export function splitDeepnoteFile(file: DeepnoteFile): SplitResult {
  // First ensure all blocks have content hashes (returns new file, doesn't mutate)
  const fileWithHashes = addContentHashes(file)

  // Compute snapshot hash before stripping outputs
  const snapshotHash = computeSnapshotHash(fileWithHashes)

  // Create source file with outputs stripped (exclude snapshotHash from source)
  const { snapshotHash: _snapshotHash, ...sourceMetadata } = (fileWithHashes.metadata ?? {}) as NonNullable<
    typeof fileWithHashes.metadata
  > & {
    snapshotHash?: string
  }
  const source: DeepnoteFile = {
    ...fileWithHashes,
    metadata: sourceMetadata,
    project: {
      ...fileWithHashes.project,
      notebooks: fileWithHashes.project.notebooks.map(notebook => ({
        ...notebook,
        blocks: notebook.blocks.map(stripOutputsFromBlock),
      })),
    },
  }

  // Create snapshot file with all data plus snapshot metadata
  const snapshot: DeepnoteSnapshot = {
    ...fileWithHashes,
    environment: fileWithHashes.environment ?? {},
    execution: fileWithHashes.execution ?? {},
    metadata: {
      ...fileWithHashes.metadata,
      snapshotHash,
    },
  }

  return { source, snapshot }
}

/**
 * Checks if a DeepnoteFile has any outputs.