jest-config.json

{
    "testEnvironment": "node",
    "testPathDirs": [
        "./src"
    ],
    "testRegex": ".*.test.js",
    "collectCoverageFrom": [
        "**/*.js",
        "!src/index.js",
        "!src/shared/constants.js",
        "!src/shared/index.reducer.js",
        "!src/shared/index.store.js",
        "!**/node_modules/**"
    ]
}