Type fixes

package-lock.json

@@ -786,6 +786,25 @@
         "@types/react": "*"
       }
     },
+    "@types/react-helmet": {
+      "version": "6.0.0",
+      "resolved": "https://registry.npmjs.org/@types/react-helmet/-/react-helmet-6.0.0.tgz",
+      "integrity": "sha512-NBMPAxgjpaMooXa51cU1BTgrX6T+hQbMiLm77JhBbfOzPQea3RB5rNpPOD5xGWHIVpGXHd59cltEzIq0qglGcQ==",
+      "dev": true,
+      "requires": {
+        "@types/react": "*"
+      }
+    },
+    "@types/react-jsonschema-form": {
+      "version": "1.7.3",
+      "resolved": "https://registry.npmjs.org/@types/react-jsonschema-form/-/react-jsonschema-form-1.7.3.tgz",
+      "integrity": "sha512-YiUCSnTA84e8g3zQobA+Iheh3+i3pb7TiIIXT4oEHwenhyrHVB5vPSIi/QeURy6PwVP1LfSCGOAHFRDpE/hAtQ==",
+      "dev": true,
+      "requires": {
+        "@types/json-schema": "*",
+        "@types/react": "*"
+      }
+    },
     "@types/unist": {
       "version": "2.0.3",
       "resolved": "https://registry.npmjs.org/@types/unist/-/unist-2.0.3.tgz",
@@ -19217,9 +19236,9 @@
       "dev": true
     },
     "typescript": {
-      "version": "3.7.2",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.7.2.tgz",
-      "integrity": "sha512-ml7V7JfiN2Xwvcer+XAf2csGO1bPBdRbFCkYBczNZggrBZ9c7G3riSUeJmqEU5uOtXNPMhE3n+R4FA/3YOAWOQ==",
+      "version": "3.9.5",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.9.5.tgz",
+      "integrity": "sha512-hSAifV3k+i6lEoCJ2k6R2Z/rp/H3+8sdmcn5NrS3/3kE7+RyZXm9aqvxWqjEXHAd8b0pShatpcdMTvEdvAJltQ==",
       "dev": true
     },
     "uglify-js": {