message: enable debugging with sourcemap in Google Chrome
diff: @@ -73,7 +73,9 @@ export class Server {
  let root: string
  if (request.url.startsWith('/build/') || request.url.startsWith('/cmaps/')) {
  root = path.resolve(`${this.extension.extensionRoot}/node_modules/pdfjs-dist`)
  - } else if (request.url.startsWith('/out/viewer/')) {
  + } else if (request.url.startsWith('/out/viewer/') || request.url.startsWith('/viewer/')) {
  + // For requests to /out/viewer/*.js and requests to /viewer/*.ts.
  + // The latter is for debugging with sourcemap.
  root = path.resolve(this.extension.extensionRoot)
  } else {
  root = path.resolve(`${this.extension.extensionRoot}/viewer`)
  