source: trip-planner-front/node_modules/klona/full/index.mjs@ ceaed42

Last change on this file since ceaed42 was 6a3a178, checked in by Ema <ema_spirova@…>, 3 years ago

initial commit

  • Property mode set to 100644
File size: 1.6 KB
Line 
1function set(obj, key, val) {
2 if (typeof val.value === 'object') val.value = klona(val.value);
3 if (!val.enumerable || val.get || val.set || !val.configurable || !val.writable || key === '__proto__') {
4 Object.defineProperty(obj, key, val);
5 } else obj[key] = val.value;
6}
7
8export function klona(x) {
9 if (typeof x !== 'object') return x;
10
11 var i=0, k, list, tmp, str=Object.prototype.toString.call(x);
12
13 if (str === '[object Object]') {
14 tmp = Object.create(x.__proto__ || null);
15 } else if (str === '[object Array]') {
16 tmp = Array(x.length);
17 } else if (str === '[object Set]') {
18 tmp = new Set;
19 x.forEach(function (val) {
20 tmp.add(klona(val));
21 });
22 } else if (str === '[object Map]') {
23 tmp = new Map;
24 x.forEach(function (val, key) {
25 tmp.set(klona(key), klona(val));
26 });
27 } else if (str === '[object Date]') {
28 tmp = new Date(+x);
29 } else if (str === '[object RegExp]') {
30 tmp = new RegExp(x.source, x.flags);
31 } else if (str === '[object DataView]') {
32 tmp = new x.constructor( klona(x.buffer) );
33 } else if (str === '[object ArrayBuffer]') {
34 tmp = x.slice(0);
35 } else if (str.slice(-6) === 'Array]') {
36 // ArrayBuffer.isView(x)
37 // ~> `new` bcuz `Buffer.slice` => ref
38 tmp = new x.constructor(x);
39 }
40
41 if (tmp) {
42 for (list=Object.getOwnPropertySymbols(x); i < list.length; i++) {
43 set(tmp, list[i], Object.getOwnPropertyDescriptor(x, list[i]));
44 }
45
46 for (i=0, list=Object.getOwnPropertyNames(x); i < list.length; i++) {
47 if (Object.hasOwnProperty.call(tmp, k=list[i]) && tmp[k] === x[k]) continue;
48 set(tmp, k, Object.getOwnPropertyDescriptor(x, k));
49 }
50 }
51
52 return tmp || x;
53}
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