Vendor chunkhash changes when app code changes

[kevinrenskers]

I'm trying to split my vendor code from my app code and got it all working. However, every time I change some code in my app and create a new build, the vendor file gets a new chunkhash and thus is downloaded by the clients again. The contents are exactly the same though.

Here is a fully working small example showing the problem: https://github.com/kevinrenskers/chunkhash-problem

And as you can see, the contents of these files are 100% identical even though the chunkhash keeps changing:

[alexhancock]

I am also experiencing this issue

[sokra]

Looks like a conflict between the plugin and the lastest changes. You could try a previous webpack version (thay had a bug that [chunkhash] didn't change when the content change).

[kevinrenskers]

Any idea which webpack version I should try?

[kevinrenskers]

Seems that going back to 1.10.1 works. 1.10.2 and up break the chunkhash as described above.

[sokra]

It doesn't "break" it, it fixes it. The chunk hash should change when the hashes of the child chunks change... ;)

[kevinrenskers]

But if the contents of the vendor file don't change then its hash shouldn't change right? How else are we supposed to have long term caching if the filename changes every time I make a change in my app code?

[sokra]

That's caused by the chunk-manifest-webpack-plugin. It move the hashes of the child chunks out of the entry chunk. I propably need to rewrite it...

[kevinrenskers]

I don't really understand. Isn't the whole point of chunk-manifest-webpack-plugin to remove the child chunk hashes exactly so that the contents of the entry chunk don't change and thus its hash should stay identical? It does work like that with 1.10.1.

Yet, you're saying that 1.10.2 have actually fixed this rather then breaking it. So, is the chunk-manifest-webpack-plugin doing something wrong? Or webpack? Or in other words, how am I supposed to have a working setup where changing the app code does not change the vendor's file name? :) Like I said it seems to work with 1.10.1 but your comments confuse me..

Are you able to get such a setup working with the latest webpack, as I've tried in the example project (linked above)?

[Zagitta]

I'm attempting the same setup as @kevinrenskers and naturally have run into the same issue. If we possibly can come up with a workaround I'd appreciate it 👍

[kevinrenskers]

Even going back to 1.10.1 only fixes the problem some of the time. Other times I create a build, the vendor file still gets a new file name. A fix would be extremely welcome.

[lsanwick]

We're seeing this issue as well, any consistent fix would be great.

[airwin]

same problem. I remove the chunkHash and use my own hash now :(.