Replace mocha with jest (#340)

* Remove unnecessary export-default-from

* Remove unused scripts

* Replace mocha with jest

* Replace chai with jest

* Refresh package-lock.json

* Fix package.json import

* Fix CI workflow

Author: Methuselah96

.babelrc

@@ -1,6 +1,5 @@
 {
   "presets": [
     ["@babel/preset-env", { "targets": "defaults" }]
-  ],
-  "plugins": ["@babel/plugin-proposal-export-default-from"]
+  ]
 }

.codeclimate.yml

@@ -19,6 +19,5 @@ jobs:
           cache: 'npm'
       - run: npm ci
       - run: npm run build
-      - run: npm run build-dist
       - run: npm run test
       - run: npm run lint

.github/workflows/CI.yml

@@ -1,9 +1,6 @@
 build: node_modules
 	npm run build
-dist: node_modules
-	npm run build && npm run build-dist
 clean:
-	rm -rf build
 	rm -rf dist
 	rm -rf coverage
 test: node_modules