feat: switch to borc (#31)

This makes cbor encoding and decoding a lot faster.

Fixes #23

Author: dignifiedquire

package.json

@@ -37,8 +37,8 @@
   "homepage": "https://github.com/ipld/js-ipld-dag-cbor",
   "dependencies": {
     "async": "^2.1.4",
+    "borc": "^2.0.0",
     "bs58": "^3.1.0",
-    "cbor": "^3.0.0",
     "cids": "^0.2.0",
     "multihashes": "^0.3.0",
     "multihashing-async": "^0.3.0",
@@ -58,4 +58,4 @@
     "npmcdn-to-unpkg-bot <npmcdn-to-unpkg-bot@users.noreply.github.com>",
     "wanderer <mjbecze@gmail.com>"
   ]
-}
+}

src/util.js

@@ -1,9 +1,10 @@
 'use strict'
 
-const cbor = require('cbor')
+const cbor = require('borc')
 const multihashing = require('multihashing-async')
 const CID = require('cids')
 const waterfall = require('async/waterfall')
+const setImmediate = require('async/setImmediate')
 
 const resolver = require('./resolver')
 
@@ -15,13 +16,28 @@ exports.serialize = (dagNode, callback) => {
     serialized = cbor.encode(dagNode)
   } catch (err) {
     // return is important, otherwise in case of error the execution would continue
-    return callback(err)
+    return setImmediate(() => {
+      callback(err)
+    })
   }
-  callback(null, serialized)
+  setImmediate(() => {
+    callback(null, serialized)
+  })
 }
 
 exports.deserialize = (data, callback) => {
-  cbor.decodeFirst(data, callback)
+  let res
+  try {
+    res = cbor.decodeFirst(data)
+  } catch (err) {
+    return setImmediate(() => {
+      callback(err)
+    })
+  }
+
+  setImmediate(() => {
+    callback(null, res)
+  })
 }
 
 exports.cid = (dagNode, callback) => {

test/resolver.spec.js

@@ -104,10 +104,6 @@ describe('IPLD format resolver (local)', () => {
         expect(paths).to.eql([{
           path: 'name',
           value: 'I am a node'
-        }, {
-        // TODO: confirm how to represent links in tree
-          path: 'someLink//',
-          value: 'LINK'
         }, {
           path: 'nest/foo/bar',
           value: 'baz'
@@ -117,6 +113,10 @@ describe('IPLD format resolver (local)', () => {
         }, {
           path: 'array/1',
           value: 2
+        }, {
+          // TODO: confirm how to represent links in tree
+          path: 'someLink//',
+          value: 'LINK'
         }])
         done()
       })