33 lines
985 B
JavaScript
33 lines
985 B
JavaScript
|
/**
|
||
|
|
* Copyright 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';
|
||
|
|
|
||
|
|
var ReactChildren = require('./ReactChildren');
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Slice children that are typically specified as `props.children`. This version
|
||
|
|
* of slice children ignores empty child components.
|
||
|
|
*
|
||
|
|
* @param {*} children The children set to filter.
|
||
|
|
* @param {number} start The first zero-based index to include in the subset.
|
||
|
|
* @param {?number} end The non-inclusive last index of the subset.
|
||
|
|
* @return {object} mirrored array with mapped children
|
||
|
|
*/
|
||
|
|
function sliceChildren(children, start, end) {
|
||
|
|
if (children == null) {
|
||
|
|
return children;
|
||
|
|
}
|
||
|
|
|
||
|
|
var array = ReactChildren.toArray(children);
|
||
|
|
return array.slice(start, end);
|
||
|
|
}
|
||
|
|
|
||
|
|
module.exports = sliceChildren;
|