export const remapSourcemap = (sourceFile: string, base?: string): Promise<any> => {
  debug(`re-mapping sources for ${sourceFile}`);
  const opts: any = {
    inline: false,
    includeContent: true,
  };
  if (base) {
    opts.base = base;
  }

  // Once sorcery loaded the chain of sourcemaps, the new sourcemap will be written asynchronously.
  return sorcery.load(sourceFile)
    .then((chain) => chain.write(opts));
}

export async function mapSources(file: string) {
  const chain = await sorcery.load(file);
  chain.write();
}

 }).then( () => sorcery.load(Path.join(copyInst.toBundle, `${meta.umd}.rollup.umd.js`)).then( chain => chain.write() ));

/**
 * Finds the original sourcemap of the file and maps it to the current file.
 * This is useful when multiple transformation happen (e.g TSC -> Rollup -> Uglify)
 **/
async function remapSourcemap(sourceFile: string) {
  // Once sorcery loaded the chain of sourcemaps, the new sourcemap will be written asynchronously.
  return (await sorcery.load(sourceFile)).write();
}