| 1 | var baseMerge = require('./_baseMerge'),
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| 2 | isObject = require('./isObject');
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| 3 |
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| 4 | /**
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| 5 | * Used by `_.defaultsDeep` to customize its `_.merge` use.
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| 6 | *
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| 7 | * @private
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| 8 | * @param {*} objValue The destination value.
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| 9 | * @param {*} srcValue The source value.
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| 10 | * @param {string} key The key of the property to merge.
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| 11 | * @param {Object} object The parent object of `objValue`.
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| 12 | * @param {Object} source The parent object of `srcValue`.
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| 13 | * @param {Object} [stack] Tracks traversed source values and their merged
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| 14 | * counterparts.
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| 15 | * @returns {*} Returns the value to assign.
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| 16 | */
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| 17 | function mergeDefaults(objValue, srcValue, key, object, source, stack) {
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| 18 | if (isObject(objValue) && isObject(srcValue)) {
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| 19 | // Recursively merge objects and arrays (susceptible to call stack limits).
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| 20 | stack.set(srcValue, objValue);
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| 21 | baseMerge(objValue, srcValue, undefined, mergeDefaults, stack);
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| 22 | stack['delete'](srcValue);
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| 23 | }
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| 24 | return objValue;
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| 25 | }
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| 26 |
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| 27 | module.exports = mergeDefaults;
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