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29 lines
1.0 KiB
JavaScript
29 lines
1.0 KiB
JavaScript
6 years ago
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var baseMerge = require('./_baseMerge'),
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isObject = require('./isObject');
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/**
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* Used by `_.defaultsDeep` to customize its `_.merge` use to merge source
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* objects into destination objects that are passed thru.
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*
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* @private
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* @param {*} objValue The destination value.
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* @param {*} srcValue The source value.
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* @param {string} key The key of the property to merge.
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* @param {Object} object The parent object of `objValue`.
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* @param {Object} source The parent object of `srcValue`.
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* @param {Object} [stack] Tracks traversed source values and their merged
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* counterparts.
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* @returns {*} Returns the value to assign.
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*/
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function customDefaultsMerge(objValue, srcValue, key, object, source, stack) {
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if (isObject(objValue) && isObject(srcValue)) {
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// Recursively merge objects and arrays (susceptible to call stack limits).
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stack.set(srcValue, objValue);
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baseMerge(objValue, srcValue, undefined, customDefaultsMerge, stack);
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stack['delete'](srcValue);
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}
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return objValue;
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}
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module.exports = customDefaultsMerge;
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