Update jest.config.json

Signed-off-by: Alexey Filippov <[email protected]>

Author: SocketSomeone

jest.config.json

@@ -4,9 +4,14 @@
 		"json",
 		"ts"
 	],
+	"rootDir": ".",
 	"testRegex": ".*\\.spec\\.ts$",
 	"transform": {
 		"^.+\\.(t|j)s$": "ts-jest"
 	},
-	"testEnvironment": "node"
+	"testEnvironment": "node",
+	"coverageDirectory": "./coverage",
+	"collectCoverageFrom": [
+		"src/**/*.ts"
+	]
 }