JAVASCRIPT

Cannot find module jest

For those who are facing this issue in 2022. Please add this code in your 
`jest-unit.json (or your jest config json file)`.

    "moduleDirectories": ["<rootDir>/../", "node_modules"]

Result:

    {
      "moduleFileExtensions": ["js", "json", "ts"],
      "rootDir": ".",
      "testEnvironment": "node",
      "testRegex": "..spec.ts$",
      "transform": {
        "^.+.(t|j)s$": "ts-jest"
      },
      "moduleDirectories": ["<rootDir>/../", "node_modules"]
    }

jest cannot find module

@Primajin In my case, all works without any errors.
How I use this parameter in package.json:
"test": "react-scripts test --transformIgnorePatterns "node_modules/(?!ui-core)/" --env=jsdom"