Jest is not defined

Error msg:
```javascript
ReferenceError: jest is not defined
at Object. (C:\Users\alilo\Documents\NextjsWithTS\nextjs-boilerplate\node_modules\jest-next-dynamic\index.js:53:3)
at Module._compile (internal/modules/cjs/loader.js:1063:30)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:1092:10)
at Module.load (internal/modules/cjs/loader.js:928:32)
at Function.Module._load (internal/modules/cjs/loader.js:769:14)
at Module.require (internal/modules/cjs/loader.js:952:19)
at require (internal/modules/cjs/helpers.js:88:18)
at Object.H76Q (C:\Users\alilo\Documents\NextjsWithTS\nextjs-boilerplate\.next\server\pages\__tests__\index.test.js:121:18)
at __webpack_require__ (C:\Users\alilo\Documents\NextjsWithTS\nextjs-boilerplate\.next\server\pages\__tests__\index.test.js:23:31)
at Module.hF5B (C:\Users\alilo\Documents\NextjsWithTS\nextjs-boilerplate\.next\server\pages\__tests__\index.test.js:190:75) {
type: 'ReferenceError'
}
```
index.test.js
```javascript
import HomePage from '@/pages/index';
import preloadAll from 'jest-next-dynamic';
import { render } from 'src/testUtils/testUtils';

beforeAll(async () => {
await preloadAll();
});
describe('Home page', () => {
it('Should... WHEN...', () => {
render();
});
});
```
jest config

```javascript
module.exports = {
roots: ['/src'],
moduleFileExtensions: ['ts', 'tsx', 'js', 'json', 'jsx'],
testPathIgnorePatterns: ['[/\\\\](node_modules|.next)[/\\\\]'],
transformIgnorePatterns: ['[/\\\\]node_modules[/\\\\].+\\.(ts|tsx)$'],
transform: {
'^.+\\.(ts|tsx|js|jsx)$': 'babel-jest',
},
watchPlugins: [
'jest-watch-typeahead/filename',
'jest-watch-typeahead/testname',
],
moduleNameMapper: {
'\\.(css|less|sass|scss)$': 'identity-obj-proxy',
'\\.(gif|ttf|eot|svg|png)$': '/test/__mocks__/fileMock.js',
'src/(.*)': '/src/$1',
'@/pages/(.*)': '/src/pages/$1',
'@/components/(.*)': '/src/components/$1',
},
setupFilesAfterEnv: ['@testing-library/jest-dom/extend-expect'],
};
```
.babelrc
```json
{
"presets": ["next/babel"],
"plugins": ["babel-plugin-dynamic-import-node"]
}
````
```json
"devDependencies": {
"@testing-library/react": "^11.2.5",
"@testing-library/user-event": "^12.8.3",
"@types/jest": "^26.0.20",
"@types/node": "^14.14.35",
"@types/react": "^17.0.3",
"@typescript-eslint/eslint-plugin": "^4.18.0",
"@typescript-eslint/parser": "^4.18.0",
"babel-jest": "^26.6.3",
"babel-plugin-dynamic-import-node": "^2.3.3",
"eslint": "^7.22.0",
"eslint-config-prettier": "^8.1.0",
"eslint-plugin-react": "^7.22.0",
"jest": "^26.6.3",
"jest-next-dynamic": "^1.0.1",
"jest-watch-typeahead": "^0.6.1",
"typescript": "^4.2.3"
}
````
What could be the reason for it? how might my code affect an external module?