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How to use the flat.-1 function in flat

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oreqizer / redux-forms / packages / redux-forms / src / __tests__ / arrays.spec.ts View on Github

it('should not shift to negative index', () => {
    const res = arrayShift('flat', 0)(fields);

    expect(res['flat.-1']).toBeUndefined();

    expect(res['flat.0']).toBe(field1);
    expect(res['flat.1']).toBe(field2);
    expect(res['flat.2']).toBe(field3);
    expect(res['flat.3']).toBe(field4);
  });