You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
43 lines
1.3 KiB
43 lines
1.3 KiB
4 years ago
|
var Stack = require('./_Stack'),
|
||
|
|
assignMergeValue = require('./_assignMergeValue'),
|
||
|
|
baseFor = require('./_baseFor'),
|
||
|
|
baseMergeDeep = require('./_baseMergeDeep'),
|
||
|
|
isObject = require('./isObject'),
|
||
|
|
keysIn = require('./keysIn'),
|
||
|
|
safeGet = require('./_safeGet');
|
||
|
|
|
||
|
|
/**
|
||
|
|
* The base implementation of `_.merge` without support for multiple sources.
|
||
|
|
*
|
||
|
|
* @private
|
||
|
|
* @param {Object} object The destination object.
|
||
|
|
* @param {Object} source The source object.
|
||
|
|
* @param {number} srcIndex The index of `source`.
|
||
|
|
* @param {Function} [customizer] The function to customize merged values.
|
||
|
|
* @param {Object} [stack] Tracks traversed source values and their merged
|
||
|
|
* counterparts.
|
||
|
|
*/
|
||
|
|
function baseMerge(object, source, srcIndex, customizer, stack) {
|
||
|
|
if (object === source) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
baseFor(source, function(srcValue, key) {
|
||
|
|
stack || (stack = new Stack);
|
||
|
|
if (isObject(srcValue)) {
|
||
|
|
baseMergeDeep(object, source, key, srcIndex, baseMerge, customizer, stack);
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
var newValue = customizer
|
||
|
|
? customizer(safeGet(object, key), srcValue, (key + ''), object, source, stack)
|
||
|
|
: undefined;
|
||
|
|
|
||
|
|
if (newValue === undefined) {
|
||
|
|
newValue = srcValue;
|
||
|
|
}
|
||
|
|
assignMergeValue(object, key, newValue);
|
||
|
|
}
|
||
|
|
}, keysIn);
|
||
|
|
}
|
||
|
|
|
||
|
|
module.exports = baseMerge;
|