use terser and clean-css directly

create a sourcemap as well by default

node_modules/whatwg-url/package.json

@@ -1,8 +1,8 @@
 {
   "_from": "whatwg-url@^7.0.0",
-  "_id": "whatwg-url@7.0.0",
+  "_id": "whatwg-url@7.1.0",
   "_inBundle": false,
-  "_integrity": "sha512-37GeVSIJ3kn1JgKyjiYNmSLP1yzbpb29jdmwBSgkD9h40/hyrR/OifpVUndji3tmwGgD8qpw7iQu3RSbCrBpsQ==",
+  "_integrity": "sha512-WUu7Rg1DroM7oQvGWfOiAK21n74Gg+T4elXEQYkOhtyLeWiJFoOGLXPKI/9gzIie9CtwVLm8wtw6YJdKyxSjeg==",
   "_location": "/whatwg-url",
   "_phantomChildren": {},
   "_requested": {
@@ -19,8 +19,8 @@
     "/data-urls",
     "/jsdom"
   ],
-  "_resolved": "https://registry.npmjs.org/whatwg-url/-/whatwg-url-7.0.0.tgz",
-  "_shasum": "fde926fa54a599f3adf82dff25a9f7be02dc6edd",
+  "_resolved": "https://registry.npmjs.org/whatwg-url/-/whatwg-url-7.1.0.tgz",
+  "_shasum": "c2c492f1eca612988efd3d2266be1b9fc6170d06",
   "_spec": "whatwg-url@^7.0.0",
   "_where": "F:\\projects\\p\\minifyfromhtml\\node_modules\\jsdom",
   "author": {
@@ -42,10 +42,9 @@
     "browserify": "^16.2.2",
     "domexception": "^1.0.1",
     "eslint": "^5.4.0",
+    "got": "^9.2.2",
     "jest": "^23.5.0",
-    "jsdom": "^11.12.0",
     "recast": "^0.15.3",
-    "request": "^2.88.0",
     "webidl2js": "^9.0.1"
   },
   "files": [
@@ -87,5 +86,5 @@
     "pretest": "node scripts/get-latest-platform-tests.js && node scripts/transform.js && node scripts/convert-idl.js",
     "test": "jest"
   },
-  "version": "7.0.0"
+  "version": "7.1.0"
 }