Jest 27 support

[flunderpero]

Describe the bug
I am trying to use jest-playwright with Jest 27 and get this error:

TypeError: virtualMocks.get is not a function

      at Resolver._getVirtualMockPath (../../node_modules/jest-resolve/build/index.js:447:25)

To Reproduce
I am using a standard installation and a single simple test that just opens a browser.

Desktop (please complete the following information):

• OS: [macOS M1]
• Playwright version [1.10.0]
• jest-playwright version [1.5.1]
• jest version [27.0.0-next.7]

Jest configuration (Either in the package.json > jest or in the jest.config.js):

module.exports = {
   globals: {
       "ts-jest": {
           diagnostics: false,
           isolatedModules: true,
       },
   },
   moduleDirectories: ["<rootDir>/../../node_modules"],
   moduleFileExtensions: ["ts", "tsx", "js", "jsx", "json", "node"],
   moduleNameMapper: {
       "\\.css$": "identity-obj-proxy",
       "\\.scss$": "identity-obj-proxy",
       "^@cling/(.*)$": "<rootDir>/../$1",
   },
   reporters: ["default"],
   setupFilesAfterEnv: ["<rootDir>/../lib.shared.test/jest_setup.ts"],
   snapshotSerializers: [],
   preset: "jest-playwright-preset",
   testMatch: ["<rootDir>/__tests__/**/*.spec.ts?(x)"],
   transform: {"^.+\\.tsx?$": "ts-jest"},
}

This is a sub-project in a monorepo. But even if I use jest-playwright-preset in the main configuration it won't work.

Additional context
All's working fine with Jest 26.6.3

[mmarkelov]

@flunderpero sorry for late response. I just don't have much time to look through new Jest version. I just tried to install some dependencies by myself and it helped.

// package.json
...
"dependencies": {
    "expect-playwright": "^0.3.2",
    "jest": "^27.0.0-next.7",
    "jest-playwright-preset": "1.5.1",
    "jest-runner": "^27.0.0-next.7",
    "playwright": "^1.10.0"
  }

[jakobrosenberg]

I just tried out next.9, but the below fix did unfortunately not help

        "expect-playwright": "^0.3.4",
        "jest": "^27.0.0-next.9",
        "jest-playwright-preset": "^1.5.2",
        "jest-runner": "^27.0.0-next.9",
        "playwright": "^1.10.0",

I posted the same issue on the Jest repo and got this from SimenB

I'd assume it's an issue because they pull in v26 deps:

jest-playwright/package.json

Lines 48 to 51 in f8ee231

	"jest-circus": "^26.6.3",
	"jest-environment-node": "^26.6.2",
	"jest-process-manager": "^0.3.1",
	"jest-runner": "^26.6.3",

Should probably be peer deps so users can plug in their own versions

jestjs/jest#11267 (comment)

[mmarkelov]

@jakobrosenberg ok! Thanks for your comment, i'll move jest to peer dependencies

[jakobrosenberg]

Getting the error below on npm install, but can be fixed with the --force flag.

npm ERR! Found: jest@27.0.0-next.9
npm ERR! node_modules/jest
npm ERR!   dev jest@"^27.0.0-next.9" from the root project
npm ERR!
npm ERR! Could not resolve dependency:
npm ERR! peer jest@"^26.6.3" from jest-playwright-preset@1.6.0-rc2      
npm ERR! node_modules/jest-playwright-preset
npm ERR!   dev jest-playwright-preset@"^1.6.0-rc2" from the root projectnpm ERR!
npm ERR! Fix the upstream dependency conflict, or retry
npm ERR! this command with --force, or --legacy-peer-deps
npm ERR! to accept an incorrect (and potentially broken) dependency resolution.

After install, I get this error when running tests with jest-playwright-preset.

    TypeError: Jest: a transform must export a `process` function.      

      at ScriptTransformer._getTransformer (node_modules/jest-runner/node_modules/@jest/transform/build/ScriptTransformer.js:360:13)

EDIT:
Adding "jest-runner": "^27.0.0-next.9", to package.json may have fixed it.

[thernstig]

I just updated to Jest 27 and ran into problems. I tracked it down to jest-playwright-preset and this update seems to have fixed it. I tested in 1.6.0-rc4. See original issue on Jest: jestjs/jest#11440

I think this warrants to bump the major release of jest-playwright-preset as Jest 27 was just released. Otherwise more users upgrading will run into this problem of Jest not beeing a peer dependency in earlier releases.

[manzoorwanijk]

Still facing the same issue with:

"@testing-library/jest-dom": "^5.13.0",
"babel-jest": "^27.0.2",
"jest": "27.0.4",
"jest-circus": "27.0.4",
"jest-environment-jsdom": "27.0.3",
"jest-playwright-jsdom": "^0.0.4",
"jest-playwright-preset": "^1.6.1",
"jest-resolve": "27.0.4"

[amrsalem1]

what was the resolution of this issue?

[lourd]

I just ran into this in my project that uses a monorepo. The root issue ended up being an indirect dependency on Jest v26 through react-scripts. No idea why! ¯\(ツ)/¯ I resolved the issue by specifying a resolution with yarn to the same one I was already depending on. E.g.:

...
"resolutions": {
  "react-scripts/jest": "27.2.3"
},
...

Be sure to clear out your node_modules and reinstall after doing so!

[jclaveau]

Updating to Jest 28 fixed this error in my case