diff --git a/package-lock.json b/package-lock.json
index 645598d..af9f412 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -4,21 +4,6 @@
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
-    "@types/node": {
-      "version": "12.12.6",
-      "resolved": "https://registry.npmjs.org/@types/node/-/node-12.12.6.tgz",
-      "integrity": "sha512-FjsYUPzEJdGXjwKqSpE0/9QEh6kzhTAeObA54rn6j3rR4C/mzpI9L0KNfoeASSPMMdxIsoJuCLDWcM/rVjIsSA==",
-      "dev": true
-    },
-    "@types/ws": {
-      "version": "6.0.3",
-      "resolved": "https://registry.npmjs.org/@types/ws/-/ws-6.0.3.tgz",
-      "integrity": "sha512-yBTM0P05Tx9iXGq00BbJPo37ox68R5vaGTXivs6RGh/BQ6QP5zqZDGWdAO6JbRE/iR1l80xeGAwCQS2nMV9S/w==",
-      "dev": true,
-      "requires": {
-        "@types/node": "*"
-      }
-    },
     "@webassemblyjs/ast": {
       "version": "1.8.5",
       "resolved": "https://registry.npmjs.org/@webassemblyjs/ast/-/ast-1.8.5.tgz",
@@ -378,11 +363,6 @@
       "integrity": "sha512-z/WhQ5FPySLdvREByI2vZiTWwCnF0moMJ1hK9YQwDTHKh6I7/uSckMetoRGb5UBZPC1z0jlw+n/XCgjeH7y1AQ==",
       "dev": true
     },
-    "async-limiter": {
-      "version": "1.0.1",
-      "resolved": "https://registry.npmjs.org/async-limiter/-/async-limiter-1.0.1.tgz",
-      "integrity": "sha512-csOlWGAcRFJaI6m+F2WKdnMKr4HhdhFVBk0H/QbJFMCr+uO2kwohwXQPxw/9OCxp05r5ghVBFSyioixx3gfkNQ=="
-    },
     "atob": {
       "version": "2.1.2",
       "resolved": "https://registry.npmjs.org/atob/-/atob-2.1.2.tgz",
@@ -4326,9 +4306,9 @@
       "dev": true
     },
     "terser": {
-      "version": "4.3.9",
-      "resolved": "https://registry.npmjs.org/terser/-/terser-4.3.9.tgz",
-      "integrity": "sha512-NFGMpHjlzmyOtPL+fDw3G7+6Ueh/sz4mkaUYa4lJCxOPTNzd0Uj0aZJOmsDYoSQyfuVoWDMSWTPU3huyOm2zdA==",
+      "version": "4.8.1",
+      "resolved": "https://registry.npmjs.org/terser/-/terser-4.8.1.tgz",
+      "integrity": "sha512-4GnLC0x667eJG0ewJTa6z/yXrbLGv80D9Ru6HIpCQmO+Q4PfEtBFi0ObSckqwL6VyQv/7ENJieXHo2ANmdQwgw==",
       "dev": true,
       "requires": {
         "commander": "^2.20.0",
@@ -4907,14 +4887,6 @@
       "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8=",
       "dev": true
     },
-    "ws": {
-      "version": "7.2.0",
-      "resolved": "https://registry.npmjs.org/ws/-/ws-7.2.0.tgz",
-      "integrity": "sha512-+SqNqFbwTm/0DC18KYzIsMTnEWpLwJsiasW/O17la4iDRRIO9uaHbvKiAS3AHgTiuuWerK/brj4O6MYZkei9xg==",
-      "requires": {
-        "async-limiter": "^1.0.0"
-      }
-    },
     "xtend": {
       "version": "4.0.2",
       "resolved": "https://registry.npmjs.org/xtend/-/xtend-4.0.2.tgz",