Copy-webpack-plugin causes build failure on netlify

Support
1

Describe the bug

Adding copy-webpack-plugin causes build failure in netlify.
They use import() to load ESM dependencies, looks like your env is not supported it

When I run build on my local machine or even in gitlab ci pipeline everything worked fine.

Steps to reproduce

When running webpack build, it fails on:
8:55:20 PM: $ npm run build
8:55:20 PM: > webpack-test@1.0.0 build /opt/build/repo
8:55:20 PM: > webpack --mode production
8:55:31 PM: (node:3235) ExperimentalWarning: The ESM module loader is experimental.
8:55:31 PM: [webpack-cli] HookWebpackError: Only file and data URLs are supported by the default ESM loader
8:55:31 PM: at makeWebpackError (/opt/build/repo/node_modules/webpack/lib/HookWebpackError.js:48:9)
8:55:31 PM: at /opt/build/repo/node_modules/webpack/lib/Compilation.js:3059:12
8:55:31 PM: at eval (eval at create (/opt/build/repo/node_modules/tapable/lib/HookCodeFactory.js:33:10), :78:1)
8:55:31 PM: at /opt/build/repo/node_modules/webpack/lib/Compilation.js:510:26
8:55:31 PM: at /opt/build/repo/node_modules/copy-webpack-plugin/dist/index.js:708:13
8:55:31 PM: -- inner error --
8:55:31 PM: Error [ERR_UNSUPPORTED_ESM_URL_SCHEME]: Only file and data URLs are supported by the default ESM loader
8:55:31 PM: at Loader.defaultResolve [as _resolve] (internal/modules/esm/resolve.js:720:11)
8:55:31 PM: at Loader.resolve (internal/modules/esm/loader.js:97:40)
8:55:31 PM: at Loader.getModuleJob (internal/modules/esm/loader.js:243:28)
8:55:31 PM: at ModuleWrap. (internal/modules/esm/module_job.js:42:40)
8:55:31 PM: at link (internal/modules/esm/module_job.js:41:36)
8:55:31 PM: caused by plugins in Compilation.hooks.processAssets
8:55:31 PM: Error [ERR_UNSUPPORTED_ESM_URL_SCHEME]: Only file and data URLs are supported by the default ESM loader
8:55:31 PM: at Loader.defaultResolve [as _resolve] (internal/modules/esm/resolve.js:720:11)
8:55:31 PM: at Loader.resolve (internal/modules/esm/loader.js:97:40)
8:55:31 PM: at Loader.getModuleJob (internal/modules/esm/loader.js:243:28)
8:55:31 PM: at ModuleWrap. (internal/modules/esm/module_job.js:42:40)
8:55:31 PM: at link (internal/modules/esm/module_job.js:41:36)

Environment

System:
OS: Windows 10 10.0.19044
CPU: (8) x64 Intel(R) Core(TM) i5-10210U CPU @ 1.60GHz
Memory: 17.37 GB / 31.78 GB
Binaries:
Node: 14.17.4 - C:\Program Files\nodejs\node.EXE
npm: 6.14.14 - C:\Program Files\nodejs\npm.CMD
Browsers:
Edge: Spartan (44.19041.1266.0), Chromium (100.0.1185.36)
Internet Explorer: 11.0.19041.1566
Packages:
babel-loader: ^8.2.4 => 8.2.4
clean-webpack-plugin: ^4.0.0 => 4.0.0
css-loader: ^6.7.1 => 6.7.1
html-webpack-plugin: ^5.5.0 => 5.5.0
postcss-loader: ^6.2.1 => 6.2.1
style-loader: ^3.3.1 => 3.3.1
ts-loader: ^9.2.8 => 9.2.8
webpack: ^5.70.0 => 5.72.0
webpack-bundle-analyzer: ^4.5.0 => 4.5.0
webpack-cli: ^4.9.2 => 4.9.2
webpack-dev-server: ^4.7.4 => 4.8.1
copy-webpack-plugin: ^10.2.4 => 10.2.4
2

Hey there, @igor.chodelka :wave:

Thanks for reaching out! Sorry to hear you are encountering difficulties. Can you please share your netlify site name where this is happening?

3

Hello, yes, site name is: betbot

4

Seems like you managed to work around this, or anyway, your builds have succeeded since approximately when you opened this case.

I considered filing a bug on this, but I didn’t think I could speak well to your use case since I don’t understand much about the different ways of loading modules - would you mind opening one for our team at the URL below?

If you do mind, I can take a shot at it for you, but I might misspeak.

5

I did not manage to fix this bug. I just removed plugin so my site can build. But this is not what I wanted.
I already reported this bug here. copy-webpack-plugin causes build failure · Issue #4260 · netlify/build · GitHub
Feel free to copy paste.

Thanks

6

thank you igor, that will do just fine! appreciate it. Please keep an eye on that GH issue as we’ll update that as we work on this.