Webpack: Webpack produces invalid JS code

[binarykitchen]

Using your latest version, turns out webpack is producing broken JS code
https://gist.githubusercontent.com/binarykitchen/a1899291fc3b470ba83cb9a245317775/raw/60de0910ca0a6bef87d96a202de8faa0ffb785ce/gistfile1.txt

Chrome complains with

index.coffee:2 Uncaught SyntaxError: missing ) after argument list
    at Object../lib/jquery/index.coffee (lib.js:851)
    at __webpack_require__ (lib.js:710)
    at fn (lib.js:95)
    at eval (multi_jquery_goog_ext:1)
    at Object.1 (lib.js:1060)
    at __webpack_require__ (lib.js:710)
    at lib.js:762
    at lib.js:765

Tried to find this out by eliminating each option one after one but no luck. Any clues what this could be? I have this error three times for all my three entry points in development mode.

[binarykitchen]

here another shorter invalid example webpack produces:

eval(
  'var portal;\n\nportal = __webpack_require____webpack_require__(/*! portal */ "./src/modules/portal.es"/*! portal */ "./src/modules/portal.es");\n\nportal.init();'
)

[mc-zone]

Hi, could you please give a small repo to reproduce it ?

[montogeek]

It looks like you just deleted our lovely crafted issue template. It was there for good reasons. Please help us solving your issue by answering the questions asked in this template.

[binarykitchen]

it's a very large app - it's obvious that webpack generates duplicate code

eval(
  'var portal;\n\nportal = __webpack_require____webpack_require__(/*! portal */ "./src/modules/portal.es"/*! portal */ "./src/modules/portal.es");\n\nportal.init();'
)

why twice webpack require? __webpack_require____webpack_require__

[binarykitchen]

hmm, looks like it doesn't happen when i dont provide a callback to the webpack() constructor. weird.

[binarykitchen]

i confirm, when you use webpack dev middleware, and use a callback in the webpack() constructor, then it outputs duplicate code.

the callback was used for running code after compilation. now i am listening to hooks instead and that fixed it.

i think webpack should have detected this and printed an error. that would save lots of developers time finding out what the heck is going on.

[sokra]

fixed by #6691