revert ts version bump

package-lock.json

@@ -4329,9 +4329,9 @@
       "dev": true
     },
     "typescript": {
-      "version": "4.0.2",
+      "version": "3.5.3",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-4.0.2.tgz",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.5.3.tgz",
-      "integrity": "sha512-e4ERvRV2wb+rRZ/IQeb3jm2VxBsirQLpQhdxplZ2MEzGvDkkMmPglecnNDfSUBivMjP93vRbngYYDQqQ/78bcQ==",
+      "integrity": "sha512-ACzBtm/PhXBDId6a6sDJfroT2pOWt/oOnk4/dElG5G33ZL776N3Y6/6bKZJBFpd+b05F3Ct9qDjMeJmRWtE2/g==",
       "dev": true
     },
     "uri-js": {

package.json

@@ -91,7 +91,7 @@
     "source-map-support": "^0.5.13",
     "tiny-glob": "^0.2.6",
     "tslib": "^1.10.0",
-    "typescript": "^4.0.2"
+    "typescript": "^3.5.3"
   },
   "nyc": {
     "include": [