webpacker: [4.0.0-rc.1] Javascript_asset_tag is broken

I’ve upgraded from 4.0.0-pre.3 to 4.0.0-rc.1 and now I get a really strange error in my application.slim:

Sprockets::Rails::Helper::AssetNotFound at / The asset “{"src"=>"/packs/vendor-4699109b154b54e1ef4e.js", "integrity"=>"sha256-hkCqb1IPUS4z7o4PyMRG7t3+J0U2MgbmVUty9/hviU0= sha384- En5fK1fCL66RKx2Ovx8/n6AEwom4R6OgFxxNvKdrL6nQYow56QN66K0CE0N1c2z/ sha512- nTC02x/4ytkiw9of3MH55Xm4KkZaaGnbEkqBJ+OeToZmQH+fYrasEosB95s+bvNKQ6tjtcEIe zHJE8aHCyDqSw=="}.js” is not present in the asset pipeline.

This errors seems to be caused by this call in my project:

app/views/layout/application.slim

= javascript_pack_tag 'vendor'

It seems that javascript_pack_tag generates a hash and is incorrectly converted to a Rails include tag. It seems to think that the hash is the src.

Edit: It might have something to do with my splitChunks configuration This was working fine in 4.0.0-pre.3, but now something goes wrong in manifest.rb - lookup.

environment.config.merge({
  optimization: {
    splitChunks: {
      cacheGroups: {
        commons: {
          test: /\/node_modules\//,
          name: 'vendor',
          chunks: 'all'
        }
      }
    }
  }
});

Configurations with cacheGroups no longer work?

About this issue

Original URL
State: closed
Created 6 years ago
Comments: 23 (23 by maintainers)

Most upvoted comments

It working now. Thanks.

seuros on Dec 15, 2018

@jakeNiemiec Duplicate includes causes the JavaScript code to be executed twice (or as many times as the script is included). It is a waste of performance and it could indeed have side-effects on older libraries that depend on code being loaded in a specific order or utility frameworks like error handlers.

@gauravtiwari Thank you! I’m going to give it a spin!

yvbeek on Jan 22, 2019

@jakeNiemiec My configuration is the same as the second example on Webpack’s splitChunks page. It gobbles up all vendor libraries into one big pack, which is fine for my project.

@gauravtiwari Thank you for all the great work!

yvbeek on Dec 18, 2018

Made a new release, please give it a try 🙏

gauravtiwari on Dec 15, 2018