Inline web worker

inline-worker.js

const blobURL = URL.createObjectURL(new Blob([ '(',
                                              
  function () {
    function fibonacci () {}
    onmessage = function (ev) {
      const result = processData(ev.data)
      postMessage(result)
    }
  }.toString(),
                                              
  ')()' ], { type: 'application/javascript' } ) 
)

const worker = new Worker(blobURL);

worker.onmessage = function (ev) {
  console.log(`Receive result: ${ev.data}`)
}