bbo/es/is_empty.js

bbo is a utility library of zero dependencies for javascript.

import isObject from './is_object.js';
import './get_tag.js';
import isArray from './is_array.js';
import isString from './is_string.js';
import isMap from './is_map.js';
import isSet from './is_set.js';

function isEmpty(obj) {
  if (obj === null) {
    return true;
  }

  if (isArray(obj)) {
    return !obj.length;
  }

  if (isString(obj)) {
    return !obj.length;
  }

  if (isObject(obj)) {
    return !Object.keys(obj).length;
  }

  if (isMap(obj) || isSet(obj)) {
    return !obj.size;
  } // other primitive || unidentifed object type


  return Object(obj) !== obj || !Object.keys(obj).length;
}

export default isEmpty;