Cannot find module 'launchdarkly-react-client-sdk'

[igor-goldny]

Describe the bug
When running the mock in my tests I get the following error:

Cannot find module 'launchdarkly-react-client-sdk' from 'node_modules/jest-launchdarkly-mock/dist/index.js'

      at Resolver._throwModNotFoundError (node_modules/jest-resolve/build/resolver.js:427:11)
      at Object.<anonymous> (node_modules/jest-launchdarkly-mock/dist/index.js:7:6)

To reproduce

1. Setup jest-launchdarkly-mock
2. Run tests with LD

Expected behavior
package should contain launchdarkly-react-client-sdk dependencies

Logs

coming from here:

jest.mock('launchdarkly-react-client-sdk', function () {
    var camelCaseKeys = jest.requireActual('launchdarkly-react-client-sdk').camelCaseKeys;
    return {
        asyncWithLDProvider: jest.fn(),
        camelCaseKeys: camelCaseKeys,
        LDProvider: jest.fn(),
        useLDClient: jest.fn(),
        useFlags: jest.fn(function () { return ({}); }),
        useLDClientError: jest.fn(),
        withLDConsumer: jest.fn(),
        withLDProvider: jest.fn(),
    };
});

SDK version
"jest-launchdarkly-mock": "^2.1.0"

Language version, developer tools
Node - 20.15.1
Jest - 29.7.0
React - 17

OS/platform
MacOS

[kinyoklion]

Hello @igor-goldny,

This package does not provide the react SDK. It is a package that is intended to be used against your existing dependency on the react-client-sdk.

It expresses this via a peer dependency. Meaning you have to directly depend on the launchdarkly-react-client-sdk in your project, and if you do not, then there isn't a reason to use this package. (As this is a package for mocking the SDK in tests, and if the SDK is not in use, then there is no need to mock it.)

Thank you,
Ryan

[thoughtworks-tcaceres]

Guess it doesn't work with the react native sdk then?

[kinyoklion]

It does not. This package is for the react SDK, which is not the same as the react-native SDK. There is a version in development for react-native.
https://github.com/launchdarkly/js-core/tree/main/packages/tooling/jest

It isn't ready for usage yet though.