react-native/Libraries/vendor/core/mergeInto.js

59 lines
2.0 KiB
JavaScript

/**
* @generated SignedSource<<f2a1f14b3c1d2b563e2a0619ef427c6d>>
*
* !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
* !! This file is a check-in of a static_upstream project! !!
* !! !!
* !! You should not modify this file directly. Instead: !!
* !! 1) Use `fjs use-upstream` to temporarily replace this with !!
* !! the latest version from upstream. !!
* !! 2) Make your changes, test them, etc. !!
* !! 3) Use `fjs push-upstream` to copy your changes back to !!
* !! static_upstream. !!
* !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
*
* Copyright 2013-2014 Facebook, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* @typechecks static-only
*/
"use strict";
var mergeHelpers = require('mergeHelpers');
var checkMergeObjectArg = mergeHelpers.checkMergeObjectArg;
var checkMergeIntoObjectArg = mergeHelpers.checkMergeIntoObjectArg;
/**
* Shallow merges two structures by mutating the first parameter.
*
* @param {object|function} one Object to be merged into.
* @param {?object} two Optional object with properties to merge from.
*/
function mergeInto(one, two) {
checkMergeIntoObjectArg(one);
if (two != null) {
checkMergeObjectArg(two);
for (var key in two) {
if (!two.hasOwnProperty(key)) {
continue;
}
one[key] = two[key];
}
}
}
module.exports = mergeInto;