jest: Bug: MacOS "usernoted" process eats all RAM

Do you want to request a feature or report a bug? Bug

What is the current behavior? When Jest is ran on watch mode and notify option is turned on and there are failing tests, MacOS’ usernoted process consumes too much RAM.

What is the expected behavior? There should not be any memory leaks.

Please provide your exact Jest configuration and mention your Jest, node, yarn/npm version and operating system.

"jest": {
    "coveragePathIgnorePatterns": [
      "<rootDir>/node_modules",
      "<rootDir>/release"
    ],
    "modulePathIgnorePatterns": [
      "<rootDir>/node_modules",
      "<rootDir>/release"
    ],
    "transform": {
      "^.+\\.tsx?$": "ts-jest"
    },
    "testRegex": "(/__tests__/.*|(\\.|/)(test))\\.(tsx?)$",
    "moduleFileExtensions": [
      "ts",
      "tsx",
      "js",
      "jsx",
      "json",
      "node"
    ],
    "mapCoverage": true,
    "coverageThreshold": {
      "global": {
        "branches": 100,
        "functions": 100,
        "lines": 100,
        "statements": 100
      }
    },
    "notify": true
  }

• Jest 22.3.0
• NPM 5.6.0
• MacOS 10.13.3

I saw that there has been the memory issue on terminal-notifier but since this is a different process I am posting it as a separate issue.