TypeError: Cannot perform 'get' on a proxy that has been revoked

[hex13]

Node: 8.4.0
immer: 0.5.0

const produce = require('immer').default;
const result = produce(
    {arr: [{count:1}, {count: 2}, {count: 3}]},
    draft => {
        draft.arr = draft.arr.filter(item => item.count > 2);
    }
);

console.log(result); // throws

result.arr[0].count seems to be troublesome, even referencing to this variable throws an error.

Result of function produce should be a plain JS object, right? Because it seems that the result sometimes contains proxies inside.

[mweststrate]

Result of function produce should be a plain JS object, right?

Correct. Interested in creating a PR with a test for the bug?

[zhw2590582]

function finalize(base) {
    // console.log(base, base[PROXY_STATE], isProxy(base))
    if (isProxy(base)) {
       // ...
    }
    return base
}

In this case, finalize function is executed twice.
If base is a proxy object, isProxy(base) is true.

State { arr: [ State { count: 3 } ] }

If base is a proxy array, base[PROXY_STATE] is undefined ???
So isProxy(base) is false, and return a proxy.

[ State { count: 3 } ]

I think you should first determine the type of object, as before, right?

function finalize(base) {
   if (isPlainObject(base)) return finalizeObject(base)
   if (Array.isArray(base)) return finalizeArray(base)
   return base
}

[mweststrate]

Bug confirmed, fix WIP

[mweststrate]

Fixed in 0.6.1

[nickserv]

I think I found a regression in 1.1.1, but it's working again in 1.1.3.

[kikill95]

I've reproduced this issue in 1.7.1

[mweststrate]

@kikill95 cool. Please open a new issue with reproduction. Responding to closed issues is generally pointless :).