Karma tests process is not autoterminating despite of a 'single' argument - npm

Question

I am creating a build definition on VSTS and I need the task to end in order to start next one.
When I execute
npm run test:single
the tests execute but then the process is not killed automatically and if I press ctrl + c I get an inquiry Terminate batch job (y/n) and even if I hit y then upon next ctrl + c I see
C:\GIT\data>[0] 12 06 2017 11:17:26.232:DEBUG [launcher]: Disconnecting all browsers
In pacakges.json test single is defined as:
"test:single": "npm run tsc && concurrently \"npm run karma-jasmine:autoclose\""
The version of Karma is:
"#types/jasmine": "2.5.47"
Question: How to make tests' process terminate when the karma finishes execution of my tests.
Part of package.json:
"scripts": {
"ci": "npm run lint && npm run format && npm run test:single && npm run test-node",
"format": "gulp format:enforce",
"karma-jasmine": "karma start karma-build-jasmine.conf.js",
"karma-jasmine:single": "karma start karma-build-jasmine.conf.js --single-run",
"karma-jasmine:autoclose": "npm run karma-jasmine:single",
"lint": "gulp lint",
"prepublish": "tsc && gulp build",
"tsc": "tsc",
"tsc:w": "tsc -w",
"test": "npm run tsc && concurrently \"npm run tsc:w\" \"npm run karma-jasmine\"",
"test:single": "npm run tsc && concurrently \"npm run karma-jasmine:autoclose\"",
"test-dist": "concurrently \"npm run tsc:w\" \"karma start karma-dist-jasmine.conf.js\"",
"test-node": "gulp test/node"
},
"repository": {
"type": "git",
"url": "git://github.com/xxx"
},
"bugs": {
"url": "https://github.com/xxx"
},
"dependencies": {},
"devDependencies": {
"#types/jasmine": "2.5.47",
"#types/node": "^7.0.18",
"#types/systemjs": "^0.20.2",
"clang-format": "1.0.51",
"concurrently": "^3.4.0",
"es6-promise": "^4.1.0",
"gulp": "^3.8.11",
"gulp-clang-format": "^1.0.23",
"gulp-rename": "^1.2.2",
"gulp-rollup": "^2.3.0",
"gulp-tsc": "^1.1.4",
"gulp-tslint": "^8.0.0",
"gulp-uglify": "^2.1.2",
"gulp-util": "^3.0.7",
"jasmine": "^2.4.1",
"jasmine-core": "^2.2.0",
"karma": "^1.7.0",
"karma-chrome-launcher": "^2.1.1",
"karma-firefox-launcher": "^1.0.1",
"karma-jasmine": "^1.1.0",
"karma-mocha": "^1.2.0",
"karma-safari-launcher": "^1.0.0",
"karma-sourcemap-loader": "^0.3.6",
"karma-spec-reporter-2": "^0.2.0",
"mocha": "^3.1.2",
"pump": "^1.0.1",
"rewire": "^2.5.2",
"systemjs": "^0.20.12",
"ts-loader": "^2.0.3",
"tslint": "^5.2.0",
"tslint-eslint-rules": "^4.0.0",
"typescript": "2.3.2",
"vrsource-tslint-rules": "^5.1.0",
"whatwg-fetch": "^2.0.1"
}
}

Answer 1

I needed to remove spec reporter as it didn't terminate itself after printing the output.