bower
Version:
The browser package manager
39 lines (29 loc) • 1 kB
JavaScript
define(['./hasOwn', '../lang/deepClone', '../lang/isObject'], function (hasOwn, deepClone, isObject) {
/**
* Deep merge objects.
*/
function merge() {
var i = 1,
key, val, obj, target;
// make sure we don't modify source element and it's properties
// objects are passed by reference
target = deepClone( arguments[0] );
while (obj = arguments[i++]) {
for (key in obj) {
if ( ! hasOwn(obj, key) ) {
continue;
}
val = obj[key];
if ( isObject(val) && isObject(target[key]) ){
// inception, deep merge objects
target[key] = merge(target[key], val);
} else {
// make sure arrays, regexp, date, objects are cloned
target[key] = deepClone(val);
}
}
}
return target;
}
return merge;
});