diff --git a/package-lock.json b/package-lock.json
index 3aa4b79..6f6f59d 100644
--- a/package-lock.json
+++ b/package-lock.json
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@@ -2501,6 +2513,15 @@
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@@ -2695,6 +2716,46 @@
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@@ -2821,17 +2884,20 @@
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@@ -2948,7 +3014,8 @@
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@@ -2960,6 +3027,7 @@
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@@ -2974,6 +3042,7 @@
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@@ -2981,12 +3050,14 @@
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@@ -3005,6 +3076,7 @@
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@@ -3085,7 +3157,8 @@
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@@ -3097,6 +3170,7 @@
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@@ -3218,6 +3292,7 @@
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@@ -3619,6 +3694,30 @@
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+        "is-windows": "^1.0.1",
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+      "resolved": "https://registry.npmjs.org/global-prefix/-/global-prefix-1.0.2.tgz",
+      "integrity": "sha1-2/dDxsFJklk8ZVVoy2btMsASLr4=",
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+        "homedir-polyfill": "^1.0.1",
+        "ini": "^1.3.4",
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@@ -3733,9 +3832,9 @@
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-      "integrity": "sha1-k0EP0hsAlzUVH4howvJx80J+I/0=",
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@@ -3744,6 +3843,15 @@
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+      "resolved": "https://registry.npmjs.org/homedir-polyfill/-/homedir-polyfill-1.0.1.tgz",
+      "integrity": "sha1-TCu8inWJmP7r9e1oWA921GdotLw=",
+      "dev": true,
+      "requires": {
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+    "log-symbols": {
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+      "resolved": "https://registry.npmjs.org/log-symbols/-/log-symbols-2.2.0.tgz",
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-        "commander": "2.15.1",
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-        "he": "1.1.1",
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+        "supports-color": "6.0.0",
+        "which": "1.3.1",
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-            "inherits": "2",
-            "minimatch": "^3.0.4",
-            "once": "^1.3.0",
-            "path-is-absolute": "^1.0.0"
+            "argparse": "^1.0.7",
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-          "resolved": "https://registry.npmjs.org/ms/-/ms-2.0.0.tgz",
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-          "dev": true
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-          "integrity": "sha512-zjaXglF5nnWpsq470jSv6P9DwPvgLkuapYmfDm3JWOm0vkNTVF2tI4UrN2r6jH1qM/uc/WtxYY1hYoA2dOKj5w==",
+          "version": "6.0.0",
+          "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-6.0.0.tgz",
+          "integrity": "sha512-on9Kwidc1IUQo+bQdhi8+Tijpo0e1SS6RoGo2guUwn5vdaxw8RXOF9Vb2ws+ihWOmh4JnCJOvaziZWP1VABaLg==",
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@@ -4682,6 +4795,15 @@
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       "dev": true
     },
+    "node-environment-flags": {
+      "version": "1.0.4",
+      "resolved": "https://registry.npmjs.org/node-environment-flags/-/node-environment-flags-1.0.4.tgz",
+      "integrity": "sha512-M9rwCnWVLW7PX+NUWe3ejEdiLYinRpsEre9hMkU/6NS4h+EEulYaDH1gCEZ2gyXsmw+RXYDaV2JkkTNcsPDJ0Q==",
+      "dev": true,
+      "requires": {
+        "object.getownpropertydescriptors": "^2.0.3"
+      }
+    },
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       "resolved": "https://registry.npmjs.org/node-modules-regexp/-/node-modules-regexp-1.0.0.tgz",
@@ -5828,6 +5950,28 @@
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       }
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+    "object.assign": {
+      "version": "4.1.0",
+      "resolved": "https://registry.npmjs.org/object.assign/-/object.assign-4.1.0.tgz",
+      "integrity": "sha512-exHJeq6kBKj58mqGyTQ9DFvrZC/eR6OwxzoM9YRoGBqrXYonaFyGiFMuc9VZrXf7DarreEwMpurG3dd+CNyW5w==",
+      "dev": true,
+      "requires": {
+        "define-properties": "^1.1.2",
+        "function-bind": "^1.1.1",
+        "has-symbols": "^1.0.0",
+        "object-keys": "^1.0.11"
+      }
+    },
+    "object.getownpropertydescriptors": {
+      "version": "2.0.3",
+      "resolved": "https://registry.npmjs.org/object.getownpropertydescriptors/-/object.getownpropertydescriptors-2.0.3.tgz",
+      "integrity": "sha1-h1jIRvW0B62rDyNuCYbxSwUcqhY=",
+      "dev": true,
+      "requires": {
+        "define-properties": "^1.1.2",
+        "es-abstract": "^1.5.1"
+      }
+    },
     "object.pick": {
       "version": "1.3.0",
       "resolved": "https://registry.npmjs.org/object.pick/-/object.pick-1.3.0.tgz",
@@ -5969,6 +6113,12 @@
         "json-parse-better-errors": "^1.0.1"
       }
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+    "parse-passwd": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/parse-passwd/-/parse-passwd-1.0.0.tgz",
+      "integrity": "sha1-bVuTSkVpk7I9N/QKOC1vFmao5cY=",
+      "dev": true
+    },
     "pascalcase": {
       "version": "0.1.1",
       "resolved": "https://registry.npmjs.org/pascalcase/-/pascalcase-0.1.1.tgz",
@@ -6511,6 +6661,16 @@
         "path-parse": "^1.0.6"
       }
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+    "resolve-dir": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/resolve-dir/-/resolve-dir-1.0.1.tgz",
+      "integrity": "sha1-eaQGRMNivoLybv/nOcm7U4IEb0M=",
+      "dev": true,
+      "requires": {
+        "expand-tilde": "^2.0.0",
+        "global-modules": "^1.0.0"
+      }
+    },
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       "resolved": "https://registry.npmjs.org/resolve-from/-/resolve-from-1.0.1.tgz",
@@ -7453,6 +7613,15 @@
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       "dev": true
     },
+    "wide-align": {
+      "version": "1.1.3",
+      "resolved": "https://registry.npmjs.org/wide-align/-/wide-align-1.1.3.tgz",
+      "integrity": "sha512-QGkOQc8XL6Bt5PwnsExKBPuMKBxnGxWWW3fU55Xt4feHozMUhdUMaBCk290qpm/wG5u/RSKzwdAC4i51YigihA==",
+      "dev": true,
+      "requires": {
+        "string-width": "^1.0.2 || 2"
+      }
+    },
     "wordwrap": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/wordwrap/-/wordwrap-1.0.0.tgz",
@@ -7564,6 +7733,17 @@
           "dev": true
         }
       }
+    },
+    "yargs-unparser": {
+      "version": "1.5.0",
+      "resolved": "https://registry.npmjs.org/yargs-unparser/-/yargs-unparser-1.5.0.tgz",
+      "integrity": "sha512-HK25qidFTCVuj/D1VfNiEndpLIeJN78aqgR23nL3y4N0U/91cOAzqfHlF8n2BvoNDcZmJKin3ddNSvOxSr8flw==",
+      "dev": true,
+      "requires": {
+        "flat": "^4.1.0",
+        "lodash": "^4.17.11",
+        "yargs": "^12.0.5"
+      }
     }
   }
 }
diff --git a/package.json b/package.json
index 99219b4..114c569 100644
--- a/package.json
+++ b/package.json
@@ -22,7 +22,7 @@
     "chai": "^4.2.0",
     "coveralls": "^3.0.2",
     "cross-env": "^5.2.0",
-    "mocha": "^5.2.0",
+    "mocha": "^6.0.0",
     "nyc": "^13.3.0",
     "pmock": "^0.2.3",
     "standard": "^12.0.1",