web worker, webpack 5, wasm-pack and vue

Question

I am using the webpack 5 worker template

const worker = new Worker( new URL('./worker.js', import.meta.url))

but when I look at the network traffic I do not see worker.js being loaded and nothing happens when I do postMessage()

I got it working before using const worker = new Worker(${process.env.BASE_URL}worker.js);