message: Let sourcemaps be cached
diff: @@ -5,9 +5,6 @@ export { transpileIfTypescript } from './transpile-if-ts';
  export function install() {
  const options: sourceMapSupport.Options = {};
  options.retrieveFile = defaultRetrieveFileHandler;
  - options.emptyCacheBetweenOperations = true; // left here only for
  - // sourceMapCache TODO: check this for correctness and performance with
  - // false value
  /* tslint:disable */
  // disabling tslint because the types for the source-map-support version
  