bug: rabin chunker errors when no options are passed

[SgtPooki]

calling rabin() throws an error, Error: please specify an average chunk size

js-ipfs-unixfs/packages/ipfs-unixfs-importer/src/chunker/rabin.ts

Lines 53 to 55 in b7a98f0

	if (options.avgChunkSize == null && options.minChunkSize == null && options.maxChunkSize == null) {
	throw errcode(new Error('please specify an average chunk size'), 'ERR_INVALID_AVG_CHUNK_SIZE')
	}

options are all optional, and there is a default AVG chunk size, so we should not be erroring here, or we should have better enforced types.

[achingbrain]

Good spot, would you like to PR a quick fix?

[github-actions]

🎉 This issue has been resolved in version ipfs-unixfs-importer-v15.1.7 🎉

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

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