Use babel preset typescript through react-native instead of ts-jest

.eslintignore

-lib/
+lib/
+babel.config.js

babel.config.js

-module.exports = function (api) {
-    api && api.cache(false);
-    return {
-      env: {
-        test: {
-          presets: [
-            "module:metro-react-native-babel-preset"
-          ],
-        }
-      }
-    };
-  }
+module.exports = function(api) {
+  api && api.cache(false);
+  return {
+    env: {
+      test: {
+        presets: ['module:metro-react-native-babel-preset'],
+      },
+    },
+  };
+};

jest.config.js

   // timers: "real",
 
   // A map from regular expressions to paths to transformers
-  transform: {
-    '^.+\\.ts(x)?$': 'ts-jest',
-    '^.+\\.js$': 'babel-jest',
-    '^.+\\.(bmp|gif|jpg|jpeg|mp4|png|psd|svg|webp)$':
-      '<rootDir>/node_modules/react-native/jest/assetFileTransformer.js',
-  },
 
   // An array of regexp pattern strings that are matched against all source file paths, matched files will skip transformation
   // transformIgnorePatterns: [

package.json

     "react": "16.8.3",
     "react-native": "0.59.1",
     "semantic-release": "15.10.3",
-    "ts-jest": "24.0.0",
     "typescript": "3.3.3333"
   },
   "repository": {