Cannot find module node_modules/get-package-type/index (in nyc module)

[anark]

When I try to use the babelrc plugin in cypress

const preprocessor = require('cypress-react-unit-test/plugins/babelrc')

module.exports = (on, config) => {
  preprocessor(on, config)
  // IMPORTANT to return the config object
  // with the any changed environment variables
  return config
  // `on` is used to hook into various events Cypress emits
  // `config` is the resolved Cypress config
}

I get the error

**Message:** The function exported by the plugins file threw an error.

We invoked the function exported by `/Users/home/Development/project/cypress/plugins/index.js`, but it threw an error.

**Details:** Error: Cannot find module '/Users/home/Development/project/node_modules/get-package-type/index'
Require stack:
- /Users/home/Development/project/node_modules/nyc/index.js
- /Users/home/Development/project/node_modules/@cypress/code-coverage/task.js
- /Users/home/Development/project/node_modules/cypress-react-unit-test/plugins/babelrc/index.js
- /Users/home/Development/project/cypress/plugins/index.js
- /Users/home/Library/Caches/Cypress/5.4.0/Cypress.app/Contents/Resources/app/packages/server/lib/plugins/child/run_plugins.js
- /Users/home/Library/Caches/Cypress/5.4.0/Cypress.app/Contents/Resources/app/packages/server/lib/plugins/child/index.js
    at Function.Module._resolveFilename (internal/modules/cjs/loader.js:961:15)
    at Function.Module._resolveFilename (/Users/home/Library/Caches/Cypress/5.4.0/Cypress.app/Contents/Resources/app/packages/server/node_modules/tsconfig-paths/lib/register.js:71:48)
    at Module._load (internal/modules/cjs/loader.js:844:27)
    at Function.Module._load (electron/js2c/asar.js:769:28)
    at Module.require (internal/modules/cjs/loader.js:1023:19)
    at require (internal/modules/cjs/helpers.js:77:18)
    at Object.<anonymous> (/Users/home/Development/project/node_modules/nyc/index.js:23:24)
    at Module._compile (internal/modules/cjs/loader.js:1145:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1166:10)
    at Module.load (internal/modules/cjs/loader.js:981:32)
    at Module._load (internal/modules/cjs/loader.js:881:14)
    at Function.Module._load (electron/js2c/asar.js:769:28)
    at Module.require (internal/modules/cjs/loader.js:1023:19)
    at require (internal/modules/cjs/helpers.js:77:18)
    at Object.<anonymous> (/Users/home/Development/project/node_modules/@cypress/code-coverage/task.js:15:13)
    at Module._compile (internal/modules/cjs/loader.js:1145:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1166:10)
    at Module.load (internal/modules/cjs/loader.js:981:32)
    at Module._load (internal/modules/cjs/loader.js:881:14)
    at Function.Module._load (electron/js2c/asar.js:769:28)
    at Module.require (internal/modules/cjs/loader.js:1023:19)
    at require (internal/modules/cjs/helpers.js:77:18)

**Stack trace:**
``
Error: The function exported by the plugins file threw an error.

We invoked the function exported by `/Users/home/Development/project/cypress/plugins/index.js`, but it threw an error.
    at Object.get (/Users/home/Library/Caches/Cypress/5.4.0/Cypress.app/Contents/Resources/app/packages/server/lib/errors.js:968:15)
    at EventEmitter.<anonymous> (/Users/home/Library/Caches/Cypress/5.4.0/Cypress.app/Contents/Resources/app/packages/server/lib/plugins/index.js:144:21)
    at EventEmitter.emit (events.js:310:20)
    at ChildProcess.<anonymous> (/Users/home/Library/Caches/Cypress/5.4.0/Cypress.app/Contents/Resources/app/packages/server/lib/plugins/util.js:19:22)
    at ChildProcess.emit (events.js:310:20)
    at emit (internal/child_process.js:876:12)
    at processTicksAndRejections (internal/process/task_queues.js:85:21)

``

I get the same issue when adding the webpack loader via

    module.exports = (on, config) => {
      require('cypress-react-unit-test/plugins/load-webpack')(on, config)

       return config
    }

[anark]

It looks like the issue is that I have not setup code coverage. Is it a requirement to setup code coverage to use the webpack or babel loader?

[bahmutov]

This is weird, I will keep this open, but this is nyc not loading correctly, I have released [email protected] to only load nyc when needed, thus if you disable code coverage, then at least it does not crash

[anark]

Very strange, that seems to fix the first issue, however it still shows TypeError: (0 , _schemaUtils.validate) is not a function if you try to run the test.

I've updated cypres-react-unit-test in the example app to show that error if you try to run the spec.

[bahmutov]

Did you update the config/webpack file as I show in https://github.com/bahmutov/react-testing-rails-webpacker#known-problems in https://github.com/bahmutov/react-testing-rails-webpacker/blob/main/config/webpack/development.js ?

[anark]

That fixes the terser issue.

Thanks!