(dev) remove rewire, add babel-plugin-rewire. (#44)

* removed rewire. now using babel-rewire instead

* implemented more tests

* changed some eslint params

* linting

* linting

* coverage on getChant

Co-authored-by: Marcus Netz <marcus.netz@godyo.com>

package.json

@@ -26,13 +26,14 @@
     },
     "devDependencies": {
         "@types/jest": "^26.0.23",
+        "babel-jest": "^26.6.3",
+        "babel-plugin-module-resolver": "^4.1.0",
         "babel-plugin-rewire": "^1.2.0",
         "eslint": "^6.8.0",
         "eslint-config-airbnb": "^18.2.1",
         "eslint-config-prettier": "^6.8.0",
         "eslint-plugin-prettier": "^3.4.0",
-        "jest": "^26.6.3",
-        "rewire": "^5.0.0"
+        "jest": "^26.6.3"
     },
     "jest": {
         "collectCoverage": true,