sourcemap is not propagated for worker file

[rjgotten]

If the source for the worker is treated by other loaders first, e.g. by Babel, then the sourcemap flowing out of those loaders is not propagated correctly by the rpc-worker-loader.

A minimal required and working change is trivial.
Instead of

function rpcWorkerLoader(content) {
  return content + workerScript;
}

do

function rpcWorkerLoader(content, sourcemap) {
  const cb = this.async();
  cb(null, content + workerScript, sourcemap);
}

Though technically, the new lines added by workerScript should be nulled away in the source map. (Webpack has source map helpers for this, iirc.)

[developit]

Released in 1.3.0.