I have a script that imports an object structured like this:
```javascript
UG: {
enumerable: true,
writable: false,
configurable: false,
value: Object.freeze({
CE: Object.freeze([
"sy",
"con",
]),
CM: Object.freeze([
"gl",
"th",
]),
}),
},
```
In my code, I need to add a new item to both `CE` and `CM`, but since they are frozen, I can't modify them directly. I've experimented with a few approaches, but nothing seems to work. Any suggestions would be greatly appreciated! Just to clarify, I'm not looking to edit the whole database; I only need to make a targeted change.
5 Answers
To modify a frozen object, you typically can't do it directly, but you can clone it. If you're using ES6, you might try spreading the values into a new object. Here's a simple way to do that:
```javascript
UG.value = {
CE: [...UG.value.CE, 'yourNewValueHere'],
CM: [...UG.value.CM, 'yourOtherNewValueHere']
};
```
It won't be pretty, but it's a solid workaround.
If you just want to use it internally and not modify the object directly, cloning is your friend. You can also try using structured cloning if you want to preserve complex objects. But remember: modifying frozen objects is like trying to change the past—it's not meant to happen!
Another option is to deep clone the object. You could use `JSON.parse(JSON.stringify(UG))` to get a mutable clone. However, if your object has methods, that approach wouldn't work. In that case, look into libraries that provide deep cloning, like Lodash. Just be aware that you might have to make sure the cloned object allows the modifications you need afterwards!
It's also worth noting that if the library behind the object doesn't update the frozen values after creation, you could just assign a new object structure with your desired changes right after the import. Just keep compatibility in mind.
You could also consider monkey-patching `Object.freeze`. Basically, redefine the method just before the import. Like this:
```javascript
Object.freeze = (a) => a;
```
After importing, restore it to its original state. Just keep in mind that this approach might have unintended consequences elsewhere in your code if you're not careful!
Exactly! Just make sure to test your app thoroughly afterwards to avoid any issues.