Add thresholds for coverage

package.json

@@ -27,6 +27,14 @@
   "jest": {
     "clearMocks": true,
     "collectCoverage": true,
+    "coverageThreshold": {
+      "global": {
+        "branches": 80,
+        "functions": 100,
+        "lines": 100,
+        "statements": 100
+      }
+    },
     "moduleFileExtensions": ["js", "ts"],
     "testEnvironment": "node",
     "testMatch": ["**/*.test.ts"],