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authorFlorian Dold <florian.dold@gmail.com>2017-05-03 15:35:00 +0200
committerFlorian Dold <florian.dold@gmail.com>2017-05-03 15:35:00 +0200
commitde98e0b232509d5f40c135d540a70e415272ff85 (patch)
treea79222a5b58484ab3b80d18efcaaa7ccc4769b33 /node_modules/lodash/_customDefaultsAssignIn.js
parente0c9d480a73fa629c1e4a47d3e721f1d2d345406 (diff)
node_modules
Diffstat (limited to 'node_modules/lodash/_customDefaultsAssignIn.js')
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1 files changed, 29 insertions, 0 deletions
diff --git a/node_modules/lodash/_customDefaultsAssignIn.js b/node_modules/lodash/_customDefaultsAssignIn.js
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+var eq = require('./eq');
+
+/** Used for built-in method references. */
+var objectProto = Object.prototype;
+
+/** Used to check objects for own properties. */
+var hasOwnProperty = objectProto.hasOwnProperty;
+
+/**
+ * Used by `_.defaults` to customize its `_.assignIn` use to assign properties
+ * of source objects to the destination object for all destination properties
+ * that resolve to `undefined`.
+ *
+ * @private
+ * @param {*} objValue The destination value.
+ * @param {*} srcValue The source value.
+ * @param {string} key The key of the property to assign.
+ * @param {Object} object The parent object of `objValue`.
+ * @returns {*} Returns the value to assign.
+ */
+function customDefaultsAssignIn(objValue, srcValue, key, object) {
+ if (objValue === undefined ||
+ (eq(objValue, objectProto[key]) && !hasOwnProperty.call(object, key))) {
+ return srcValue;
+ }
+ return objValue;
+}
+
+module.exports = customDefaultsAssignIn;