Can't log arrays (TypeError)

[hex13]

immer 0.4.1, Node v8.4.0

const produce = require('immer').default;
produce([],(arr) => { console.log(arr);  });

TypeError: 'getOwnPropertyDescriptor' on proxy: trap returned descriptor for property 'length' that is incompatible with the existing property in the proxy target
    at Function.keys (<anonymous>)
    at formatValue (util.js:392:21)
    at inspect (util.js:236:10)
    at format (util.js:97:24)
    at Console.log (console.js:113:24)
    at immer (repl:1:28)
    at produce (blah/node_modules/immer/immer.js:224:29)
    at repl:1:1
    at ContextifyScript.Script.runInThisContext (vm.js:44:33)
    at REPLServer.defaultEval (repl.js:239:29)

[zhw2590582]

https://github.com/mweststrate/immer/blob/29e22580849f66311d089a3362972053b1ecbe09/immer.js#L157
When you directly access an array itself, 'length' property is an exception from this, immer attempts to modify the descriptor's configurable property, So TypeError.
How is this? Or delete it？

if (descriptor && (Array.isArray(owner) && prop !== 'length')) descriptor.configurable = true

@mweststrate

[mweststrate]

@zhw2590582 correct! Forgot that Array.length is as usual an exception to everything :/. working on a fix.

[mweststrate]

Should be fixed in 0.4.2