function isEmpty()

in packages/fbjs/src/core/isEmpty.js [21:38]

• 18 lines of code
• 6 McCabe index (conditional complexity)

function isEmpty(value: mixed): boolean {
  if (Array.isArray(value)) {
    return value.length === 0;
  } else if (typeof value === 'object') {
    if (value) {
      invariant(
        !isIterable(value) || value.size === undefined,
        'isEmpty() does not support iterable collections.',
      );
      for (const _ in value) {
        return false;
      }
    }
    return true;
  } else {
    return !value;
  }
}