Reduced typescript version due to a compile error

package-lock.json

@@ -5007,9 +5007,9 @@
       "dev": true
     },
     "typescript": {
-      "version": "3.7.5",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.7.5.tgz",
-      "integrity": "sha512-/P5lkRXkWHNAbcJIiHPfRoKqyd7bsyCma1hZNUGfn20qm64T6ZBlrzprymeu918H+mB/0rIg2gGK/BXkhhYgBw==",
+      "version": "3.6.4",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.6.4.tgz",
+      "integrity": "sha512-unoCll1+l+YK4i4F8f22TaNVPRHcD9PA3yCuZ8g5e0qGqlVlJ/8FSateOLLSagn+Yg5+ZwuPkL8LFUc0Jcvksg==",
       "dev": true
     },
     "unc-path-regex": {

package.json

@@ -37,7 +37,7 @@
     "sha256": "^0.2.0",
     "terser": "^4.2.1",
     "ttypescript": "^1.5.7",
-    "typescript": "^3.7.3",
+    "typescript": "3.6.4",
     "wat2wasm": "^1.0.2",
     "fs-extra": "latest"
   },