diff --git a/package-lock.json b/package-lock.json
index 0421da825..b092a48cb 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -122,6 +122,11 @@
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+      "integrity": "sha1-ibTRmasr7kneFk6gK4nORi1xt2c="
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@@ -130,6 +135,15 @@
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@@ -148,11 +167,55 @@
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+      "integrity": "sha1-2Klr13/Wjfd5OnMDajug1UBdR3s="
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+      "resolved": "https://registry.npmjs.org/cpx2/-/cpx2-2.0.0.tgz",
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+        "debounce": "^1.2.0",
+        "debug": "^4.1.1",
+        "duplexer": "^0.1.1",
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+        "safe-buffer": "^5.2.0",
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@@ -196,6 +259,11 @@
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+      "resolved": "https://registry.npmjs.org/debounce/-/debounce-1.2.0.tgz",
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@@ -219,6 +287,11 @@
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+      "resolved": "https://registry.npmjs.org/duplexer/-/duplexer-0.1.1.tgz",
+      "integrity": "sha1-rOb/gIwc5mtX0ev5eXessCM0z8E="
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@@ -280,6 +353,11 @@
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       "integrity": "sha1-PYpcZog6FqMMqGQ+hR8Zuqd5eRc="
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+    "find-index": {
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+      "resolved": "https://registry.npmjs.org/find-index/-/find-index-0.1.1.tgz",
+      "integrity": "sha1-Z101iyyjiS15Whq0cjL4tuLg3eQ="
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@@ -295,6 +373,21 @@
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+      "version": "8.1.0",
+      "resolved": "https://registry.npmjs.org/fs-extra/-/fs-extra-8.1.0.tgz",
+      "integrity": "sha512-yhlQgA6mnOJUKOsRUFsgJdQCvkKhcz8tlZG5HBQfReYZy46OwLcY+Zia0mtdHsOo9y/hP+CxMN0TU9QxoOtG4g==",
+      "requires": {
+        "graceful-fs": "^4.2.0",
+        "jsonfile": "^4.0.0",
+        "universalify": "^0.1.0"
+      }
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+    "fs.realpath": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/fs.realpath/-/fs.realpath-1.0.0.tgz",
+      "integrity": "sha1-FQStJSMVjKpA20onh8sBQRmU6k8="
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@@ -303,6 +396,32 @@
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+      "version": "7.1.4",
+      "resolved": "https://registry.npmjs.org/glob/-/glob-7.1.4.tgz",
+      "integrity": "sha512-hkLPepehmnKk41pUGm3sYxoFs/umurYfYJCerbXEyFIWcAzvpipAgVkBqqT9RBKMGjnq6kMuyYwha6csxbiM1A==",
+      "requires": {
+        "fs.realpath": "^1.0.0",
+        "inflight": "^1.0.4",
+        "inherits": "2",
+        "minimatch": "^3.0.4",
+        "once": "^1.3.0",
+        "path-is-absolute": "^1.0.0"
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+    "glob2base": {
+      "version": "0.0.12",
+      "resolved": "https://registry.npmjs.org/glob2base/-/glob2base-0.0.12.tgz",
+      "integrity": "sha1-nUGbPijxLoOjYhZKJ3BVkiycDVY=",
+      "requires": {
+        "find-index": "^0.1.1"
+      }
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+    "graceful-fs": {
+      "version": "4.2.2",
+      "resolved": "https://registry.npmjs.org/graceful-fs/-/graceful-fs-4.2.2.tgz",
+      "integrity": "sha512-IItsdsea19BoLC7ELy13q1iJFNmd7ofZH5+X/pJr90/nRoPEX0DJo1dHDbgtYWOhJhcCgMDTOw84RZ72q6lB+Q=="
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@@ -343,6 +462,20 @@
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+      "resolved": "https://registry.npmjs.org/inflight/-/inflight-1.0.6.tgz",
+      "integrity": "sha1-Sb1jMdfQLQwJvJEKEHW6gWW1bfk=",
+      "requires": {
+        "once": "^1.3.0",
+        "wrappy": "1"
+      }
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+    "inherits": {
+      "version": "2.0.4",
+      "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.4.tgz",
+      "integrity": "sha512-k/vGaX4/Yla3WzyMCvTQOXYeIHvqOKtnqBduzTHpzpQZzAskKMhZ2K+EnBiSM9zGSoIFeMpXKxa4dYeZIQqewQ=="
+    },
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@@ -406,6 +539,14 @@
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       "integrity": "sha1-Epai1Y/UXxmg9s4B1lcB4sc1tus="
     },
+    "jsonfile": {
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/jsonfile/-/jsonfile-4.0.0.tgz",
+      "integrity": "sha1-h3Gq4HmbZAdrdmQPygWPnBDjPss=",
+      "requires": {
+        "graceful-fs": "^4.1.6"
+      }
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@@ -454,6 +595,14 @@
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+    "minimatch": {
+      "version": "3.0.4",
+      "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-3.0.4.tgz",
+      "integrity": "sha512-yJHVQEhyqPLUTgt9B83PXu6W3rx4MvvHvSUvToogpwoGDOUQ+yDrR0HRot+yOCdCO7u4hX3pWft6kWBBcqh0UA==",
+      "requires": {
+        "brace-expansion": "^1.1.7"
+      }
+    },
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       "resolved": "https://registry.npmjs.org/node-fetch/-/node-fetch-2.6.0.tgz",
@@ -469,6 +618,14 @@
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+    "once": {
+      "version": "1.4.0",
+      "resolved": "https://registry.npmjs.org/once/-/once-1.4.0.tgz",
+      "integrity": "sha1-WDsap3WWHUsROsF9nFC6753Xa9E=",
+      "requires": {
+        "wrappy": "1"
+      }
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       "resolved": "https://registry.npmjs.org/optionator/-/optionator-0.8.2.tgz",
@@ -487,6 +644,16 @@
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     },
+    "path-is-absolute": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/path-is-absolute/-/path-is-absolute-1.0.1.tgz",
+      "integrity": "sha1-F0uSaHNVNP+8es5r9TpanhtcX18="
+    },
+    "path-parse": {
+      "version": "1.0.6",
+      "resolved": "https://registry.npmjs.org/path-parse/-/path-parse-1.0.6.tgz",
+      "integrity": "sha512-GSmOT2EbHrINBf9SR7CDELwlJ8AENk3Qn7OikK4nFYAu3Ote2+JYNVvkpAEQm3/TLNEJFD/xZJjzyxg3KBWOzw=="
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@@ -591,6 +758,14 @@
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+      "resolved": "https://registry.npmjs.org/resolve/-/resolve-1.12.0.tgz",
+      "integrity": "sha512-B/dOmuoAik5bKcD6s6nXDCjzUKnaDvdkRyAk6rsmsKLipWj4797iothd7jmmUhWTfinVMU+wc56rYKsit2Qy4w==",
+      "requires": {
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+      }
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       "resolved": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.1.1.tgz",
@@ -606,6 +781,11 @@
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     },
+    "shell-quote": {
+      "version": "1.7.2",
+      "resolved": "https://registry.npmjs.org/shell-quote/-/shell-quote-1.7.2.tgz",
+      "integrity": "sha512-mRz/m/JVscCrkMyPqHc/bczi3OQHkLTqXHEFu0zDhK/qfv3UcOA4SVmRCLmos4bhjr9ekVQubj/R7waKapmiQg=="
+    },
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       "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.6.1.tgz",
@@ -638,6 +818,21 @@
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     },
+    "subarg": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/subarg/-/subarg-1.0.0.tgz",
+      "integrity": "sha1-9izxdYHplrSPyWVpn1TAauJouNI=",
+      "requires": {
+        "minimist": "^1.1.0"
+      },
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+          "version": "1.2.0",
+          "resolved": "https://registry.npmjs.org/minimist/-/minimist-1.2.0.tgz",
+          "integrity": "sha1-o1AIsg9BOD7sH7kU9M1d95omQoQ="
+        }
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@@ -682,9 +877,14 @@
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+      "version": "3.7.0-dev.20191004",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.7.0-dev.20191004.tgz",
+      "integrity": "sha512-HoDEBY2LsQv5STXCw1Mt/xylYhGUeymFzHWV+5NGl2hCxLDeNmYmV38tlFoCSK2RQkFTpE2Fr9jQ6OzWiWgrpQ=="
+    },
+    "universalify": {
+      "version": "0.1.2",
+      "resolved": "https://registry.npmjs.org/universalify/-/universalify-0.1.2.tgz",
+      "integrity": "sha512-rBJeI5CXAlmy1pV+617WB9J63U6XcazHHF2f2dbJix4XzpUF0RS3Zbj0FGIOCAva5P/d/GBOYaACQ1w+0azUkg=="
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@@ -755,6 +955,11 @@
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       "integrity": "sha1-J1hIEIkUVqQXHI0CJkQa3pDLyus="
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+    "wrappy": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
+      "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8="
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diff --git a/package.json b/package.json
index 53d618c65..91644cd0d 100644
--- a/package.json
+++ b/package.json
@@ -14,6 +14,7 @@
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     "@types/node-fetch": "^1.6.9",
     "@types/webidl2": "^23.8.0",
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     "jsdom": "^11.12.0",
     "node-fetch": "^2.6.0",
     "print-diff": "^0.1.1",