Function countCommonObjectIs

packages/diff-sequences/src/__tests__/index.test.ts:67–78

(a: Array<unknown>, b: Array<unknown>)

// Return length of longest common subsequence according to Object.is method.
const countCommonObjectIs = (a: Array<unknown>, b: Array<unknown>): number => {
  let n = 0;
  diff(
    a.length,
    b.length,
    (aIndex: number, bIndex: number) => Object.is(a[aIndex], b[bIndex]),
    (nCommon: number) => {
      n += nCommon;
    },
  );
  return n;
};

// Return length of longest common subsequence according to === operator.
const countCommonStrictEquality = (