setup ava for ts, port test/ to ts

package.json

@@ -22,6 +22,13 @@
     ],
     "helpers": [
       "**/testUtils/**/*"
+    ],
+    "compileEnhancements": false,
+    "extensions": [
+      "ts"
+    ],
+    "require": [
+      "ts-node/register/transpile-only"
     ]
   },
   "eslintConfig": {
@@ -297,6 +304,7 @@
     "@types/seamless-immutable": "7.1.11",
     "@types/styled-jsx": "2.2.8",
     "@types/uuid": "3.4.6",
+    "@types/webdriverio": "^4.8.0",
     "@typescript-eslint/eslint-plugin": "2.10.0",
     "@typescript-eslint/parser": "2.10.0",
     "ava": "2.4.0",
@@ -324,6 +332,7 @@
     "proxyquire": "2.1.3",
     "spectron": "9.0.0",
     "style-loader": "1.0.1",
+    "ts-node": "8.5.4",
     "typescript": "3.7.3",
     "webpack": "4.41.2"
   },