fix: remove node globals

package.json

@@ -37,7 +37,8 @@
   },
   "homepage": "https://github.com/ipld/js-ipld-dag-cbor",
   "dependencies": {
-    "borc": "^2.1.0",
+    "borc": "^2.1.2",
+    "buffer": "^5.5.0",
     "cids": "~0.8.0",
     "is-circular": "^1.0.2",
     "multicodec": "^1.0.0",

src/resolver.js

@@ -1,7 +1,7 @@
 'use strict'
 
 const CID = require('cids')
-
+const { Buffer } = require('buffer')
 const util = require('./util')
 
 /**

src/util.js

@@ -1,6 +1,7 @@
 'use strict'
 
 const cbor = require('borc')
+const { Buffer } = require('buffer')
 const multicodec = require('multicodec')
 const multihashing = require('multihashing-async')
 const CID = require('cids')

test/util.spec.js

@@ -1,6 +1,7 @@
 /* eslint-env mocha */
 'use strict'
 
+const { Buffer } = require('buffer')
 const chai = require('chai')
 const dirtyChai = require('dirty-chai')
 const expect = chai.expect