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Here's an example of how you could do diffing

export const removedPath = (paths, target) => {
  return paths.filter(path => path !== target);
};

import {removedPath} from './index';

const targetOne = [
  [1, 1],
  [1, 2],
  [1, 3],
  [1, 4],
];

const targetTwo = [
  [2, 1],
  [2, 2],
  [2, 3],
  [2, 4],
];

const originPath = [targetOne, targetTwo];

describe('removedPath', () => {
  test('should remove targetOne and left targetTwo', () => {
    const result = removedPath(originPath, targetOne);
    expect(result).toEqual([targetTwo]);
  });

  test('should remove nothing', () => {
    const result = removedPath([targetTwo], targetOne);
    expect(result).toEqual([targetTwo]);
  });
});