mirror of
https://github.com/musix-org/musix-oss
synced 2024-12-24 14:23:18 +00:00
76 lines
2.6 KiB
JavaScript
76 lines
2.6 KiB
JavaScript
|
/*! firebase-admin v8.9.2 */
|
||
|
|
"use strict";
|
||
|
|
/*!
|
||
|
|
* Copyright 2017 Google Inc.
|
||
|
|
*
|
||
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
||
|
|
* you may not use this file except in compliance with the License.
|
||
|
|
* You may obtain a copy of the License at
|
||
|
|
*
|
||
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
||
|
|
*
|
||
|
|
* Unless required by applicable law or agreed to in writing, software
|
||
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
||
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||
|
|
* See the License for the specific language governing permissions and
|
||
|
|
* limitations under the License.
|
||
|
|
*/
|
||
|
|
Object.defineProperty(exports, "__esModule", { value: true });
|
||
|
|
/**
|
||
|
|
* Returns a deep copy of an object or array.
|
||
|
|
*
|
||
|
|
* @param {object|array} value The object or array to deep copy.
|
||
|
|
* @return {object|array} A deep copy of the provided object or array.
|
||
|
|
*/
|
||
|
|
function deepCopy(value) {
|
||
|
|
return deepExtend(undefined, value);
|
||
|
|
}
|
||
|
|
exports.deepCopy = deepCopy;
|
||
|
|
/**
|
||
|
|
* Copies properties from source to target (recursively allows extension of objects and arrays).
|
||
|
|
* Scalar values in the target are over-written. If target is undefined, an object of the
|
||
|
|
* appropriate type will be created (and returned).
|
||
|
|
*
|
||
|
|
* We recursively copy all child properties of plain objects in the source - so that namespace-like
|
||
|
|
* objects are merged.
|
||
|
|
*
|
||
|
|
* Note that the target can be a function, in which case the properties in the source object are
|
||
|
|
* copied onto it as static properties of the function.
|
||
|
|
*
|
||
|
|
* @param {any} target The value which is being extended.
|
||
|
|
* @param {any} source The value whose properties are extending the target.
|
||
|
|
* @return {any} The target value.
|
||
|
|
*/
|
||
|
|
function deepExtend(target, source) {
|
||
|
|
if (!(source instanceof Object)) {
|
||
|
|
return source;
|
||
|
|
}
|
||
|
|
switch (source.constructor) {
|
||
|
|
case Date:
|
||
|
|
// Treat Dates like scalars; if the target date object had any child
|
||
|
|
// properties - they will be lost!
|
||
|
|
var dateValue = source;
|
||
|
|
return new Date(dateValue.getTime());
|
||
|
|
case Object:
|
||
|
|
if (target === undefined) {
|
||
|
|
target = {};
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
case Array:
|
||
|
|
// Always copy the array source and overwrite the target.
|
||
|
|
target = [];
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
// Not a plain Object - treat it as a scalar.
|
||
|
|
return source;
|
||
|
|
}
|
||
|
|
for (var prop in source) {
|
||
|
|
if (!source.hasOwnProperty(prop)) {
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
target[prop] = deepExtend(target[prop], source[prop]);
|
||
|
|
}
|
||
|
|
return target;
|
||
|
|
}
|
||
|
|
exports.deepExtend = deepExtend;
|