chore: update deps (#26)

* chore: update deps

* chore: update hamt sharding dep

* fix: remove importer dep

* test: test on node 12

* chore: move importer to dev deps

Author: achingbrain

.travis.yml

@@ -6,7 +6,7 @@ stages:
   - cov
 
 node_js:
-  - '10'
+  - '12'
 
 os:
   - linux

package.json

@@ -47,18 +47,19 @@
     "ipld": "^0.25.0",
     "ipld-dag-pb": "^0.18.0",
     "ipld-in-memory": "^3.0.0",
-    "multicodec": "~0.5.1",
-    "multihashes": "~0.4.14",
-    "nyc": "^14.0.0",
-    "sinon": "^7.1.0"
+    "ipfs-unixfs-importer": "^0.42.0",
+    "multicodec": "^1.0.0",
+    "multihashes": "^0.4.14",
+    "nyc": "^15.0.0",
+    "sinon": "^8.0.4"
   },
   "dependencies": {
     "async-iterator-last": "^1.0.0",
-    "cids": "~0.7.1",
+    "cids": "^0.7.1",
     "err-code": "^2.0.0",
-    "hamt-sharding": "~0.0.2",
-    "ipfs-unixfs": "^0.2.0",
-    "ipfs-unixfs-importer": "~0.40.0"
+    "hamt-sharding": "^1.0.0",
+    "ipfs-unixfs": "^0.3.0",
+    "multihashing-async": "^0.8.0"
   },
   "contributors": [
     "Alan Shaw <[email protected]>",

src/utils/find-cid-in-shard.js

@@ -1,7 +1,27 @@
 'use strict'
 
 const Bucket = require('hamt-sharding/src/bucket')
-const DirSharded = require('ipfs-unixfs-importer/src/dir-sharded')
+const multihashing = require('multihashing-async')
+
+// FIXME: this is copy/pasted from ipfs-unixfs-importer/src/dir-sharded.js
+const hashFn = async function (value) {
+  const hash = await multihashing(Buffer.from(value, 'utf8'), 'murmur3-128')
+
+  // Multihashing inserts preamble of 2 bytes. Remove it.
+  // Also, murmur3 outputs 128 bit but, accidently, IPFS Go's
+  // implementation only uses the first 64, so we must do the same
+  // for parity..
+  const justHash = hash.slice(2, 10)
+  const length = justHash.length
+  const result = Buffer.alloc(length)
+  // TODO: invert buffer because that's how Go impl does it
+  for (let i = 0; i < length; i++) {
+    result[length - i - 1] = justHash[i]
+  }
+
+  return result
+}
+hashFn.code = 0x22 // TODO: get this from multihashing-async?
 
 const addLinksToHamtBucket = (links, bucket, rootBucket) => {
   return Promise.all(
@@ -10,7 +30,7 @@ const addLinksToHamtBucket = (links, bucket, rootBucket) => {
         const pos = parseInt(link.Name, 16)
 
         return bucket._putObjectAt(pos, new Bucket({
-          hashFn: DirSharded.hashFn
+          hashFn
         }, bucket, pos))
       }
 
@@ -46,7 +66,7 @@ const findShardCid = async (node, name, ipld, context) => {
   if (!context) {
     context = {
       rootBucket: new Bucket({
-        hashFn: DirSharded.hashFn
+        hashFn
       }),
       hamtDepth: 1
     }