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/**
* Copyright (c) 2013-present, Facebook, Inc.
* All rights reserved.
*
* This source code is licensed under the BSD-style license found in the
* LICENSE file in the root directory of this source tree. An additional grant
* of patent rights can be found in the PATENTS file in the same directory.
*
*
*/
'use strict';
/* eslint-disable fb-www/typeof-undefined */
/* eslint-disable no-unused-vars */
var invariant = require('./invariant');
/**
* Checks if a value is empty.
*/
function isEmpty(value) {
if (Array.isArray(value)) {
return value.length === 0;
} else if (typeof value === 'object') {
if (value) {
!(!isIterable(value) || value.size === undefined) ? process.env.NODE_ENV !== 'production' ? invariant(false, 'isEmpty() does not support iterable collections.') : invariant(false) : void 0;
for (var _ in value) {
return false;
}
}
return true;
} else {
return !value;
}
}
function isIterable(value) {
if (typeof Symbol === 'undefined') {
return false;
}
return value[Symbol.iterator];
}
module.exports = isEmpty;
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