A MigrationLoader over a stored import, so the existing migrator replays it unchanged.
MigrationLoader
chunks[].file is the seq as a string. The migrator treats file as an opaque handle it hands back to loadChunk, so nothing needs a filesystem or a fetch.
chunks[].file
file
loadChunk
A
MigrationLoaderover a stored import, so the existing migrator replays it unchanged.chunks[].fileis the seq as a string. The migrator treatsfileas an opaque handle it hands back toloadChunk, so nothing needs a filesystem or a fetch.