Custom chunker

[alanshaw]

go-ipfs accepts chunkers that confirm to a "Splitter" interface: https://github.com/ipfs/go-ipfs-chunker

It would be really nice to pass a chunker to this library to enable.

refs storacha/ipfs-car#99

[mikeal]

there is support for a custom chunker although i think the interface may be a bit different https://github.com/ipfs/js-ipfs-unixfs/tree/master/packages/ipfs-unixfs-importer#overriding-internals

[Gozala]

I am somewhat skeptical that providing importer a chunker is going to be good API given that importer takes several files and each may need to be chunked differently.

That is to suggest that it may be a good idea to reconsider overall importer API in the context of #186 so that chunkers could be provided along with files as opposed to having a one chunker or chunker dispatcher.

[achingbrain]

The importer takes a chunker option which is a function of type Chunker.

Please re-open if this doesn't solve the problem.

[achingbrain]

For per-file chunkers, the FileCandidate type could be extended to allow passing a chunker/layout, etc for just that directory entry, but it's not come up before.