34 lines
1.1 KiB
JavaScript
34 lines
1.1 KiB
JavaScript
"use strict";
|
|
|
|
var includes = require("../array/#/contains")
|
|
, uniq = require("../array/#/uniq")
|
|
, copyDeep = require("./copy-deep")
|
|
, objForEach = require("./for-each")
|
|
, isPlainObject = require("./is-plain-object")
|
|
, ensureValue = require("./valid-value");
|
|
|
|
var isArray = Array.isArray, slice = Array.prototype.slice;
|
|
|
|
var deepAssign = function (target, source) {
|
|
if (target === source) return target;
|
|
if (isPlainObject(target) && isPlainObject(source)) {
|
|
objForEach(source, function (value, key) { target[key] = deepAssign(target[key], value); });
|
|
return target;
|
|
}
|
|
if (isArray(target) && isArray(source)) {
|
|
source.forEach(function (item) {
|
|
if (includes.call(target, item)) return;
|
|
if (isArray(item) || isPlainObject(item)) item = copyDeep(item);
|
|
target.push(item);
|
|
});
|
|
return target;
|
|
}
|
|
if (isPlainObject(source) || isArray(source)) return copyDeep(source);
|
|
return source;
|
|
};
|
|
|
|
module.exports = function (target/*, ...objects*/) {
|
|
return uniq
|
|
.call([ensureValue(target)].concat(slice.call(arguments, 1).map(ensureValue)))
|
|
.reduce(deepAssign);
|
|
};
|