diff --git a/package-lock.json b/package-lock.json
index 94d550a..c254960 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -14,12 +14,12 @@
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@@ -47,12 +47,12 @@
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+        "@babel/types": "^7.4.4"
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@@ -67,34 +67,34 @@
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+      "resolved": "https://registry.npmjs.org/@babel/template/-/template-7.4.4.tgz",
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-        "@babel/parser": "^7.2.2",
-        "@babel/types": "^7.2.2"
+        "@babel/parser": "^7.4.4",
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-      "resolved": "https://registry.npmjs.org/@babel/traverse/-/traverse-7.3.4.tgz",
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+      "resolved": "https://registry.npmjs.org/@babel/traverse/-/traverse-7.4.4.tgz",
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-        "@babel/generator": "^7.3.4",
+        "@babel/generator": "^7.4.4",
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@@ -118,9 +118,9 @@
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@@ -531,12 +531,27 @@
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+      "resolved": "https://registry.npmjs.org/archy/-/archy-1.0.0.tgz",
+      "integrity": "sha1-+cjBN1fMHde8N5rHeyxipcKGjEA=",
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@@ -1149,6 +1164,36 @@
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+      "resolved": "https://registry.npmjs.org/caching-transform/-/caching-transform-3.0.2.tgz",
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+      "dev": true,
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+        "make-dir": "^2.0.0",
+        "package-hash": "^3.0.0",
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+          "resolved": "https://registry.npmjs.org/make-dir/-/make-dir-2.1.0.tgz",
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+          "dev": true,
+          "requires": {
+            "pify": "^4.0.1",
+            "semver": "^5.6.0"
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+          "resolved": "https://registry.npmjs.org/pify/-/pify-4.0.1.tgz",
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+        }
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@@ -1463,6 +1508,37 @@
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+      "requires": {
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+        "nested-error-stacks": "^2.0.0",
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+          "dev": true,
+          "requires": {
+            "pify": "^4.0.1",
+            "semver": "^5.6.0"
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+        "pify": {
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+          "resolved": "https://registry.npmjs.org/pify/-/pify-4.0.1.tgz",
+          "integrity": "sha512-uB80kBFb/tfd68bVleG9T5GGsGPjJrLAUpR5PZIrhBnIaRTQRjqdJSsIKkOP6OAIFbj7GOrcudc5pNjZ+geV2g==",
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+        }
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@@ -1675,6 +1751,15 @@
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+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/default-require-extensions/-/default-require-extensions-2.0.0.tgz",
+      "integrity": "sha1-9fj7sYp9bVCyH2QfZJ67Uiz+JPc=",
+      "dev": true,
+      "requires": {
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@@ -1891,6 +1976,15 @@
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+      "resolved": "https://registry.npmjs.org/error-ex/-/error-ex-1.3.2.tgz",
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+      "dev": true,
+      "requires": {
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@@ -1914,6 +2008,12 @@
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+      "resolved": "https://registry.npmjs.org/es6-error/-/es6-error-4.1.1.tgz",
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@@ -2510,6 +2610,28 @@
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+      "resolved": "https://registry.npmjs.org/foreground-child/-/foreground-child-1.5.6.tgz",
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@@ -2626,7 +2748,8 @@
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@@ -2647,12 +2770,14 @@
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@@ -2667,17 +2792,20 @@
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           "version": "0.0.1",
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@@ -2794,7 +2922,8 @@
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@@ -2806,6 +2935,7 @@
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@@ -2820,6 +2950,7 @@
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@@ -2827,12 +2958,14 @@
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+          "dev": true,
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           "bundled": true,
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@@ -2851,6 +2984,7 @@
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@@ -2931,7 +3065,8 @@
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@@ -2943,6 +3078,7 @@
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@@ -3028,7 +3164,8 @@
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@@ -3064,6 +3201,7 @@
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@@ -3083,6 +3221,7 @@
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@@ -3126,12 +3265,14 @@
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@@ -3268,9 +3409,9 @@
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@@ -3449,6 +3590,15 @@
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@@ -3480,6 +3630,12 @@
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@@ -3641,6 +3797,12 @@
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@@ -5824,6 +5226,12 @@
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@@ -5928,6 +5348,16 @@
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+          "resolved": "https://registry.npmjs.org/pify/-/pify-3.0.0.tgz",
+          "integrity": "sha1-5aSs0sEB/fPZpNB/DbxNtJ3SgXY=",
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@@ -6088,6 +5535,12 @@
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+      "integrity": "sha1-8FKijacOYYkX7wqKw0wa5aaChrM=",
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@@ -6209,6 +5662,27 @@
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+      "resolved": "https://registry.npmjs.org/read-pkg/-/read-pkg-3.0.0.tgz",
+      "integrity": "sha1-nLxoaXj+5l0WwA4rGcI3/Pbjg4k=",
+      "dev": true,
+      "requires": {
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+        "normalize-package-data": "^2.3.2",
+        "path-type": "^3.0.0"
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+      "resolved": "https://registry.npmjs.org/read-pkg-up/-/read-pkg-up-4.0.0.tgz",
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+      "dev": true,
+      "requires": {
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@@ -6253,6 +5727,15 @@
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+      "dev": true,
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@@ -6870,6 +6353,52 @@
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+      "resolved": "https://registry.npmjs.org/spawn-wrap/-/spawn-wrap-1.4.2.tgz",
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+      "requires": {
+        "foreground-child": "^1.5.6",
+        "mkdirp": "^0.5.0",
+        "os-homedir": "^1.0.1",
+        "rimraf": "^2.6.2",
+        "signal-exit": "^3.0.2",
+        "which": "^1.3.0"
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+    "spdx-correct": {
+      "version": "3.1.0",
+      "resolved": "https://registry.npmjs.org/spdx-correct/-/spdx-correct-3.1.0.tgz",
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+      "dev": true,
+      "requires": {
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+        "spdx-license-ids": "^3.0.0"
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+    "spdx-exceptions": {
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+      "resolved": "https://registry.npmjs.org/spdx-exceptions/-/spdx-exceptions-2.2.0.tgz",
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+    "spdx-expression-parse": {
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/spdx-expression-parse/-/spdx-expression-parse-3.0.0.tgz",
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+      "dev": true,
+      "requires": {
+        "spdx-exceptions": "^2.1.0",
+        "spdx-license-ids": "^3.0.0"
+      }
+    },
+    "spdx-license-ids": {
+      "version": "3.0.4",
+      "resolved": "https://registry.npmjs.org/spdx-license-ids/-/spdx-license-ids-3.0.4.tgz",
+      "integrity": "sha512-7j8LYJLeY/Yb6ACbQ7F76qy5jHkp0U6jgBfJsk97bwWlVUnUWsAgpyaCvo17h0/RQGnQ036tVDomiwoI4pDkQA==",
+      "dev": true
+    },
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@@ -7026,6 +6555,12 @@
         "ansi-regex": "^3.0.0"
       }
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+    "strip-bom": {
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/strip-bom/-/strip-bom-3.0.0.tgz",
+      "integrity": "sha1-IzTBjpx1n3vdVv3vfprj1YjmjtM=",
+      "dev": true
+    },
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       "resolved": "https://registry.npmjs.org/strip-dirs/-/strip-dirs-2.1.0.tgz",
@@ -7181,6 +6716,18 @@
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+      "version": "5.2.3",
+      "resolved": "https://registry.npmjs.org/test-exclude/-/test-exclude-5.2.3.tgz",
+      "integrity": "sha512-M+oxtseCFO3EDtAaGH7iiej3CBkzXqFMbzqYAACdzKui4eZA+pq3tZEwChvOdNfa7xxy8BfbmgJSIr43cC/+2g==",
+      "dev": true,
+      "requires": {
+        "glob": "^7.1.3",
+        "minimatch": "^3.0.4",
+        "read-pkg-up": "^4.0.0",
+        "require-main-filename": "^2.0.0"
+      }
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     "thenify": {
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       "resolved": "https://registry.npmjs.org/thenify/-/thenify-3.3.0.tgz",
@@ -7846,6 +7393,16 @@
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       "dev": true
     },
+    "validate-npm-package-license": {
+      "version": "3.0.4",
+      "resolved": "https://registry.npmjs.org/validate-npm-package-license/-/validate-npm-package-license-3.0.4.tgz",
+      "integrity": "sha512-DpKm2Ui/xN7/HQKCtpZxoRWBhZ9Z0kqtygG8XCgNQ8ZlDnxuQmWhj566j8fN4Cu3/JmbhsDo7fcAJq4s9h27Ew==",
+      "dev": true,
+      "requires": {
+        "spdx-correct": "^3.0.0",
+        "spdx-expression-parse": "^3.0.0"
+      }
+    },
     "value-or-function": {
       "version": "3.0.0",
       "resolved": "https://registry.npmjs.org/value-or-function/-/value-or-function-3.0.0.tgz",
@@ -8199,6 +7756,18 @@
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         "websocket": "git://github.com/frozeman/WebSocket-Node.git#6c72925e3f8aaaea8dc8450f97627e85263999f2"
+      },
+      "dependencies": {
+        "websocket": {
+          "version": "git://github.com/frozeman/WebSocket-Node.git#6c72925e3f8aaaea8dc8450f97627e85263999f2",
+          "from": "git://github.com/frozeman/WebSocket-Node.git#6c72925e3f8aaaea8dc8450f97627e85263999f2",
+          "requires": {
+            "debug": "^2.2.0",
+            "nan": "^2.3.3",
+            "typedarray-to-buffer": "^3.1.2",
+            "yaeti": "^0.0.6"
+          }
+        }
       }
     },
     "web3-shh": {
@@ -8369,16 +7938,6 @@
         }
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-    "websocket": {
-      "version": "git://github.com/frozeman/WebSocket-Node.git#6c72925e3f8aaaea8dc8450f97627e85263999f2",
-      "from": "git://github.com/frozeman/WebSocket-Node.git#browserifyCompatible",
-      "requires": {
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-        "nan": "^2.3.3",
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-        "yaeti": "^0.0.6"
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       "resolved": "https://registry.npmjs.org/whatwg-url/-/whatwg-url-7.0.0.tgz",
@@ -8488,6 +8047,17 @@
         "mkdirp": "^0.5.1"
       }
     },
+    "write-file-atomic": {
+      "version": "2.4.2",
+      "resolved": "https://registry.npmjs.org/write-file-atomic/-/write-file-atomic-2.4.2.tgz",
+      "integrity": "sha512-s0b6vB3xIVRLWywa6X9TOMA7k9zio0TMOsl9ZnDkliA/cfJlpHXAscj0gbHVJiTdIuAYpIyqS5GW91fqm6gG5g==",
+      "dev": true,
+      "requires": {
+        "graceful-fs": "^4.1.11",
+        "imurmurhash": "^0.1.4",
+        "signal-exit": "^3.0.2"
+      }
+    },
     "ws": {
       "version": "3.3.3",
       "resolved": "https://registry.npmjs.org/ws/-/ws-3.3.3.tgz",
@@ -8560,6 +8130,12 @@
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       "integrity": "sha1-8m9ITXJoTPQr7ft2lwqhYI+/lXc="
     },
+    "yallist": {
+      "version": "2.1.2",
+      "resolved": "https://registry.npmjs.org/yallist/-/yallist-2.1.2.tgz",
+      "integrity": "sha1-HBH5IY8HYImkfdUS+TxmmaaoHVI=",
+      "dev": true
+    },
     "yargs": {
       "version": "13.2.2",
       "resolved": "https://registry.npmjs.org/yargs/-/yargs-13.2.2.tgz",
diff --git a/package.json b/package.json
index 5a07c29..69bdc17 100644
--- a/package.json
+++ b/package.json
@@ -86,7 +86,7 @@
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     "lcov-result-merger": "^3.1.0",
     "mocha": "^6.1.2",
-    "nyc": "^13.3.0",
+    "nyc": "^14.1.0",
     "source-map-support": "^0.5.12",
     "truffle-hdwallet-provider": "^1.0.6",
     "ts-node": "^8.0.3",