fix: add buffer

Adds buffer related to ipfs/js-ipfs#2924

Author: hugomrdias

package.json

@@ -40,10 +40,11 @@
   },
   "homepage": "https://github.com/multiformats/js-multicodec#readme",
   "dependencies": {
+    "buffer": "^5.5.0",
     "varint": "^5.0.0"
   },
   "devDependencies": {
-    "aegir": "^20.5.0",
+    "aegir": "^21.3.0",
     "bent": "^7.0.4",
     "chai": "^4.2.0",
     "dirty-chai": "^2.0.1",

src/index.js

@@ -11,6 +11,7 @@
  */
 'use strict'
 
+const { Buffer } = require('buffer')
 const varint = require('varint')
 const intTable = require('./int-table')
 const codecNameToCodeVarint = require('./varint-table')

src/util.js

@@ -1,5 +1,6 @@
 'use strict'
 const varint = require('varint')
+const { Buffer } = require('buffer')
 
 module.exports = {
   numberToBuffer,