setup-maven-cached/node_modules/underscore/modules/isEmpty.js
2022-06-28 10:39:30 +02:00

19 lines
639 B
JavaScript

import getLength from './_getLength.js';
import isArray from './isArray.js';
import isString from './isString.js';
import isArguments from './isArguments.js';
import keys from './keys.js';
// Is a given array, string, or object empty?
// An "empty" object has no enumerable own-properties.
export default function isEmpty(obj) {
if (obj == null) return true;
// Skip the more expensive `toString`-based type checks if `obj` has no
// `.length`.
var length = getLength(obj);
if (typeof length == 'number' && (
isArray(obj) || isString(obj) || isArguments(obj)
)) return length === 0;
return getLength(keys(obj)) === 0;
}