docs: function precompile({ code, files }) {
      return resolve(files)
          .then(filter(test(/^locales(\/|\\)[a-z]{2,3}(_[A-Z]{2})?\.json$/)))
          .then(localesToPairs)
          .then(runInAllLocales(code))
          .then(createMetaFile)
          .return(['.meta', ...files]);
  }