javascript - How to import Stream.Transform in Webpack >5?

I have a project with dependencies that rely on node.js type libraries, like Buffer and Stream.

I have added the following to Webpack config:

       cfg.resolve.fallback = {
          ...cfg.resolve.fallback,
          buffer: require.resolve('buffer'),
          stream: require.resolve('stream-browserify'),
          _stream_duplex: require.resolve('readable-stream/lib/_stream_duplex'),
          _stream_passthrough: require.resolve('readable-stream/lib/_stream_passthrough'),
          _stream_readable: require.resolve('readable-stream/lib/_stream_readable'),
          _stream_transform: require.resolve('readable-stream/lib/_stream_transform'),
          _stream_writable: require.resolve('readable-stream/lib/_stream_writable')
        }

        cfg.plugins.push(new webpack.ProvidePlugin({
          Buffer: ['buffer', 'Buffer']
        }))

        cfg.plugins.push(new NodePolyfillPlugin())

I can import the Stream class:

const stream = require('stream') // this works

but I cannot see the Stream.Transform class:

const Transform = require('stream').Transform /// undefined

Has anybody idea how to fix this? I have been trying for 2 days now without progress.

Thanks!

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javascript - How to import Stream.Transform in Webpack >5? - Stack Overflow

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