TypeError: (0 , _jestGetType.getType) is not a function

The reason why we see this error is that the type of the return type of mock values is not accurate and that breaks the system.


import * as LIB from 'path/to/your/library';
jest.mock('path/to/your/library');

jest.spyOn(LIB, 'someFunction').mockReturnValue({
	type: foo
} as any);

// here foo is not of type expected by response
// even if you do as any, that returns in some error.

This still doesnt solve for 100% of the cases.

Will dive deeper and post updates to find out more.


screen.queryAllByTestId('wrong tile id '); // this was also a potential issue

There seems to be some internal type testing inside testing library which fails if the query doest work well.

Will share some code instances to help resolve.

TypeError: (0 , _jestGetType.getType) is not a function

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