Subtle undefined fix

index.js

@@ -1,6 +1,31 @@
 'use strict'
 
+var floor = Math.floor
+
 exports.randomBytes = exports.rng = exports.pseudoRandomBytes = exports.prng = require('randombytes')
+
+exports.getRandomValues = function (abv) {
+  var l = abv.length
+  while (l--) {
+    var bytes = exports.randomBytes(7)
+    var randomFloat = (bytes[0] % 32) / 32
+
+    for (var i = 0; i < bytes.length; i++) {
+      var byte = bytes[i]
+      randomFloat = (randomFloat + byte) / 256
+    }
+
+    abv[l] = Math.floor(randomFloat * 256)
+  }
+  return abv
+}
+
+exports.randomUUID = function () {
+  return '10000000-1000-4000-8000-100000000000'.replace(/[018]/g, function (c) {
+    return  (c ^ (exports.getRandomValues(new Uint8Array(1))[0] & (15 >> (c / 4)))).toString(16)
+  })
+}
+
 exports.createHash = exports.Hash = require('create-hash')
 exports.createHmac = exports.Hmac = require('create-hmac')
 
@@ -65,6 +90,10 @@ exports.privateDecrypt = publicEncrypt.privateDecrypt
 //   }
 // })
 
+var { Crypto } = require('@peculiar/webcrypto');
+var crypto = new Crypto();
+exports.webcrypto = crypto;
+
 var rf = require('randomfill')
 
 exports.randomFill = rf.randomFill
@@ -94,4 +123,4 @@ exports.constants = {
   'POINT_CONVERSION_COMPRESSED': 2,
   'POINT_CONVERSION_UNCOMPRESSED': 4,
   'POINT_CONVERSION_HYBRID': 6
-}
+}

package.json

@@ -28,7 +28,8 @@
     "pbkdf2": "^3.0.3",
     "public-encrypt": "^4.0.0",
     "randombytes": "^2.0.0",
-    "randomfill": "^1.0.3"
+    "randomfill": "^1.0.3",
+    "@peculiar/webcrypto": "1.4.3"
   },
   "devDependencies": {
     "hash-test-vectors": "~1.3.2",