Using the plugin with Cloudflare Workers throws an error

[DominikIlski]

Steps to reproduce:

1. Create a new project using Cloudflare wrangler CLI
2. Add webpack configuration to worker according to the documentation.
3. Add dotenv-webpack according to the documentation.
4. Run wrangler publish

My use case of this package is:
I have a process in CD that generates some data. I can save this data to a file.
After that, I want to read this data, put it into a worker using the plugin. (still in CD process) After that, I want to use this data during execution time.
Error:

~\cloudflare\worker\node_modules\webpack\lib\DefinePlugin.js:292
                                                compilation.valueCacheVersions.get(VALUE_DEP_MAIN)
                                                                               ^

TypeError: Cannot read property 'get' of undefined
    at \worker\node_modules\webpack\lib\DefinePlugin.js:292:38
    at SyncHook.eval [as call] (eval at create (~\.wrangler\wranglerjs-1.19.3\node_modules\tapable\lib\HookCodeFactory.js:19:10), <anonymous>:7:1)
    at SyncHook.lazyCompileHook (~\.wrangler\wranglerjs-1.19.3\node_modules\tapable\lib\Hook.js:154:20)
    at Compiler.newCompilation (~\.wrangler\wranglerjs-1.19.3\node_modules\webpack\lib\Compiler.js:631:26)
    at ~\.wrangler\wranglerjs-1.19.3\node_modules\webpack\lib\Compiler.js:667:29
    at AsyncSeriesHook.eval [as callAsync] (eval at create (~\.wrangler\wranglerjs-1.19.3\node_modules\tapable\lib\HookCodeFactory.js:33:10), <anonymous>:6:1)
    at AsyncSeriesHook.lazyCompileHook (~\.wrangler\wranglerjs-1.19.3\node_modules\tapable\lib\Hook.js:154:20)
    at Compiler.compile (~\.wrangler\wranglerjs-1.19.3\node_modules\webpack\lib\Compiler.js:662:28)
    at ~\.wrangler\wranglerjs-1.19.3\node_modules\webpack\lib\Compiler.js:321:11
    at Compiler.readRecords (~\.wrangler\wranglerjs-1.19.3\node_modules\webpack\lib\Compiler.js:529:11)
Error: failed to execute `"C:\\Program Files\\nodejs\\node.EXE" "~\\AppData\\Local\\.wrangler\\wranglerjs-1.19.3" "--output-file=~\\AppData\\Local\\Temp\\.wranglerjs_outputKqkOx" "--wasm-binding=WASM_MODULE" "--webpack-config=webpack.config.js"`: exited with exit code: 1

My code structure:

My webpack config:

const Dotenv = require('dotenv-webpack');

module.exports = {
  plugins: [
    new Dotenv()
  ],
  target: 'webworker',
  entry: './index.js',
  mode: 'development',
};

I will be glad to provide more info on this topic.

[mrsteele]

Looking at your error, this could be a problem with webpack and just surfacing from my plugin.

could you try to just use webpack.DefinePlugin Directly to see if that causes the bug to present itself?

[mrsteele]

Closing due to lack of participation and cannot reproduce.

Feel free to reopen this if you can provide more details, thanks.

[lunadis]

Hey, I facing the same issue, and I tried to apply the solution but isn't working; returned the same error message;

I have another project with the same configurations files and package versions they working fine;

[lunadis]

Something is wrong with valueCacheVersions initialization or set, in my case when I initialize the compilation.valueCacheVersions at DefinePlugin.js l:343 the issue is solved;

i just do something like: compilation.valueCacheVersions ||= new Map();

@mrsteele can you help me?

[mrsteele]

Can you try using only DefinePlugin? It could be related to your implementation.