With a circular dependency, TypeError: Cannot redefine property from the bundler

[sompylasar]

https://codesandbox.io/s/61zjk5n05k?module=%2Fsrc%2Findex.js

TypeError: Cannot redefine property: a
    at Function.defineProperty (<anonymous>)
    at evaluate (https://61zjk5n05k.codesandbox.io/src/index.js:9:8)
    at r.a (https://codesandbox.io/static/js/sandbox.37512735.js:5359:971)
    at e.value (https://codesandbox.io/static/js/sandbox.37512735.js:5418:270)
    at https://codesandbox.io/static/js/sandbox.37512735.js:5391:22872
    at Array.forEach (<anonymous>)
    at e.value (https://codesandbox.io/static/js/sandbox.37512735.js:5391:22843)
    at https://codesandbox.io/static/js/sandbox.37512735.js:3877:8157
    at t (https://codesandbox.io/static/js/common-sandbox.a360099a.js:1937:811)
    at Generator._invoke (https://codesandbox.io/static/js/common-sandbox.a360099a.js:1937:599)
    at Generator.e.(anonymous function) [as next] (https://codesandbox.io/static/js/common-sandbox.a360099a.js:1937:990)
    at n (https://codesandbox.io/static/js/common-sandbox.a360099a.js:2110:316)
    at https://codesandbox.io/static/js/common-sandbox.a360099a.js:2110:412

[CompuIves]

Interesting, I'm getting a different error: (0 , _.a) is not a function. Which is intended behavior I think since on initial run a should export {}. I'm on a phone right now, but I can debug further tomorrow!

…

On Sat, Apr 7, 2018, 23:12 Ivan Babak ***@***.***> wrote: https://codesandbox.io/s/61zjk5n05k?module=%2Fsrc%2Findex.js TypeError: Cannot redefine property: a at Function.defineProperty (<anonymous>) at evaluate (https://61zjk5n05k.codesandbox.io/src/index.js:9:8) at r.a (https://codesandbox.io/static/js/sandbox.37512735.js:5359:971) at e.value (https://codesandbox.io/static/js/sandbox.37512735.js:5418:270) at https://codesandbox.io/static/js/sandbox.37512735.js:5391:22872 at Array.forEach (<anonymous>) at e.value (https://codesandbox.io/static/js/sandbox.37512735.js:5391:22843) at https://codesandbox.io/static/js/sandbox.37512735.js:3877:8157 at t (https://codesandbox.io/static/js/common-sandbox.a360099a.js:1937:811) at Generator._invoke (https://codesandbox.io/static/js/common-sandbox.a360099a.js:1937:599) at Generator.e.(anonymous function) [as next] (https://codesandbox.io/static/js/common-sandbox.a360099a.js:1937:990) at n (https://codesandbox.io/static/js/common-sandbox.a360099a.js:2110:316) at https://codesandbox.io/static/js/common-sandbox.a360099a.js:2110:412 [image: screen shot 2018-04-07 at 2 10 05 pm] <https://user-images.githubusercontent.com/498274/38460388-95187eec-3a6d-11e8-9146-c7e6f10d5710.png> — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub <#705>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AAj1CEq7pR2yyxM9_NeTAqP09sz69WKhks5tmSvWgaJpZM4TLQWe> .

[sompylasar]

Yes, I expected a to be undefined, this sandbox is supposed to illustrate circular dependency issue, but stumbled upon this when I finished the code on desktop.

I'm on mobile (Android Chrome) now, too, and this sandbox is stuck on the loading screen.

[CompuIves]

Hm weird, this is what I'm getting:

The earlier redefine error is certainly possible. We do Hot Module Replacement when you make changes, so in that case a.js could already have been evaluated before b.js was created. A full refresh should still give the a is undefined error though.

[lbogdan]

Closing this, as it's expected behavior. @sompylasar Feel free to reopen if you still have issues.