Unable to import '@testing-library/react-native' dependency

[pratham-srivastava-07]

I am trying to test the performance of application using reassure but whenever i am running this command

npx reassure --baseline

i get

❇️ Running performance tests:

• Baseline: pratham-testing (b758adac3a58059945ad7f96007274805edad40e) - 2025-09-15 13:04:50Z

FAIL tests/NewComponent.perf-test.tsx
× NewComponent (3 ms)

● NewComponent

Unable to import '@testing-library/react-native' dependency

  4 |
  5 | test('NewComponent', async () => {
> 6 |   await measureRenders(<NewComponent />);
    |                       ^
  7 | });

  at resolveTestingLibrary (node_modules/@callstack/reassure-measure/src/testing-library.ts:30:15)  
  at measureRendersInternal (node_modules/@callstack/reassure-measure/src/measure-renders.tsx:63:52)
  at measureRendersInternal (node_modules/@callstack/reassure-measure/src/measure-renders.tsx:31:23)
  at Object.<anonymous> (tests/NewComponent.perf-test.tsx:6:23)
  at asyncGeneratorStep (node_modules/@babel/runtime/helpers/asyncToGenerator.js:3:17)
  at _next (node_modules/@babel/runtime/helpers/asyncToGenerator.js:17:9)
  at node_modules/@babel/runtime/helpers/asyncToGenerator.js:22:7
  at Object.<anonymous> (node_modules/@babel/runtime/helpers/asyncToGenerator.js:14:12)

Test Suites: 1 failed, 1 total
Tests: 1 failed, 1 total
Snapshots: 0 total
Time: 3.399 s, estimated 5 s
Ran all test suites.

❌ Test runner (D:\pitstopAi-v2\node_modules\jest\bin\jest.js) exited with error code 1

What i have tried :-

according to the readme and docs

i did

babel.config.js

module.exports = function(api) {
api.cache(true);
return {
presets: ['babel-preset-expo'],
};
};

jest.config.js

module.exports = {
preset: 'react-native',
setupFilesAfterEnv: ['./jest-setup.js'],
};

jest setup.js

import { configure } from 'reassure';

configure({ testingLibrary: 'react-native' });

and the main test file is tests/NewComponent.perf-test.tsx

import NewComponent from "../components/NewComponent";
import * as React from "react"
import {measurePerformance} from "reassure"

jest.setTimeout(60_000)

test("NewComponent", async () => {
await measurePerformance();
})

Any suggestions would be much appreciated,

[mdjastrzebski]

@pratham-srivastava-07 have you installed '@testing-library/react-native' as a dev dependency?

npm install -D '@testing-library/react-native'

[thehumblesultan]

I have the same issue despite having @testing-library/react-native installed as dev dependency

[mdjastrzebski]

@pratham-srivastava-07 Your error indicates that Jest does not have access to @testing-library/react-native package.

[ovy9086]

facing the same issues 🤔 tried with both testing-library/react and testing-library/react-native , added both as dependencies and dev dependencies.

[mdjastrzebski]

@pratham-srivastava-07 @ovy9086 what package managers are you using?

[ovy9086]

using yarn myself.

I downgraded my testing-library/react-native from 13 to 12.5.2 and that seems to fix it for me 🤔

[mdjastrzebski]

that's weird! @ovy9086 could you provide a minimal repro repo?

[ovy9086]

@mdjastrzebski here you go 👋 https://github.com/ovy9086/reassure-testing-library-repro

[TMaszko]

Hi @ovy9086, @pratham-srivastava-07, @thehumblesultan !
Could you please replace setupFiles with setupFilesAfterEnv. Since v13 @testing-library/react-native calls expect.extend under the expect has to be available in the global scope but that's not the case in the setupFiles phase. Check out jest docs here. If that doesn't solve the issue then please provide a reproduction repo like @ovy9086 did ;)

[ovy9086]

Makes sense, this fixes it 👌 thanks @TMaszko . Maybe worth adding a mention of this under the docs : https://callstack.github.io/reassure/docs/installation

Also not calling configure() made this error go away while using setupFiles, so I ended up doing that instead, as I only have testing-library/react-native which is properly auto-detected.

[TMaszko]

@ovy9086 Just keep in mind that without calling a configure you will solely rely on the default config :)