function shallowEqual()

in src/utils/shallowEqual.js [43:78]

• 27 lines of code
• 10 McCabe index (conditional complexity)

function shallowEqual(objA: mixed, objB: mixed): boolean {
  if (is(objA, objB)) {
    return true;
  }

  if (
    typeof objA !== 'object' ||
    objA === null ||
    typeof objB !== 'object' ||
    objB === null
  ) {
    // console.log('shallowEqual: not object??');
    return false;
  }

  const keysA = Object.keys(objA);
  const keysB = Object.keys(objB);

  if (keysA.length !== keysB.length) {
    // console.log('!shallowEqual: different keys length');
    return false;
  }

  // Test for A's keys different from B.
  for (let i = 0; i < keysA.length; i++) {
    if (
      !hasOwnProperty.call(objB, keysA[i]) ||
      !is(objA[keysA[i]], objB[keysA[i]])
    ) {
      // console.log(`!shallowEqual: different ${keysA[i]} - ${objA[keysA[i]]} vs. ${objB[keysA[i]]}`);
      return false;
    }
  }

  return true;
}